/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 05:17:28,178 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 05:17:28,224 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 05:17:28,228 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 05:17:28,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 05:17:28,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 05:17:28,270 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 05:17:28,271 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 05:17:28,271 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 05:17:28,272 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 05:17:28,272 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 05:17:28,272 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 05:17:28,273 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 05:17:28,273 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 05:17:28,273 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 05:17:28,274 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 05:17:28,274 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 05:17:28,274 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 05:17:28,275 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 05:17:28,275 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 05:17:28,275 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 05:17:28,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 05:17:28,281 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 05:17:28,282 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 05:17:28,285 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 05:17:28,286 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 05:17:28,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 05:17:28,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 05:17:28,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 05:17:28,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 05:17:28,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 05:17:28,288 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 05:17:28,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 05:17:28,288 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 05:17:28,288 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 05:17:28,289 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 05:17:28,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 05:17:28,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 05:17:28,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 05:17:28,676 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 05:17:28,677 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 05:17:28,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-08-25 05:17:29,970 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 05:17:30,180 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 05:17:30,180 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-08-25 05:17:30,186 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bf37eb23/d1764eb52967497c884787349b69175f/FLAG4475211c0 [2023-08-25 05:17:30,196 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bf37eb23/d1764eb52967497c884787349b69175f [2023-08-25 05:17:30,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 05:17:30,199 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 05:17:30,200 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 05:17:30,200 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 05:17:30,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 05:17:30,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:17:30" (1/1) ... [2023-08-25 05:17:30,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da478b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:30, skipping insertion in model container [2023-08-25 05:17:30,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:17:30" (1/1) ... [2023-08-25 05:17:30,223 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 05:17:30,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 05:17:30,369 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 05:17:30,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 05:17:30,405 INFO L206 MainTranslator]: Completed translation [2023-08-25 05:17:30,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:30 WrapperNode [2023-08-25 05:17:30,405 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 05:17:30,406 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 05:17:30,406 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 05:17:30,406 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 05:17:30,412 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:30" (1/1) ... [2023-08-25 05:17:30,419 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:30" (1/1) ... [2023-08-25 05:17:30,446 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 275 [2023-08-25 05:17:30,446 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 05:17:30,447 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 05:17:30,447 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 05:17:30,447 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 05:17:30,458 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:30" (1/1) ... [2023-08-25 05:17:30,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:30" (1/1) ... [2023-08-25 05:17:30,469 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:30" (1/1) ... [2023-08-25 05:17:30,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:30" (1/1) ... [2023-08-25 05:17:30,476 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:30" (1/1) ... [2023-08-25 05:17:30,479 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:30" (1/1) ... [2023-08-25 05:17:30,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:30" (1/1) ... [2023-08-25 05:17:30,497 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:30" (1/1) ... [2023-08-25 05:17:30,500 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 05:17:30,501 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 05:17:30,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 05:17:30,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 05:17:30,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:30" (1/1) ... [2023-08-25 05:17:30,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 05:17:30,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:17:30,543 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 05:17:30,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 05:17:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 05:17:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 05:17:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 05:17:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 05:17:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 05:17:30,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 05:17:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 05:17:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 05:17:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 05:17:30,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 05:17:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 05:17:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 05:17:30,580 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 05:17:30,702 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 05:17:30,705 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 05:17:31,032 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 05:17:31,044 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 05:17:31,044 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 05:17:31,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:17:31 BoogieIcfgContainer [2023-08-25 05:17:31,059 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 05:17:31,061 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 05:17:31,061 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 05:17:31,064 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 05:17:31,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:17:30" (1/3) ... [2023-08-25 05:17:31,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799a6db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:17:31, skipping insertion in model container [2023-08-25 05:17:31,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:17:30" (2/3) ... [2023-08-25 05:17:31,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@799a6db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:17:31, skipping insertion in model container [2023-08-25 05:17:31,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:17:31" (3/3) ... [2023-08-25 05:17:31,068 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2023-08-25 05:17:31,083 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 05:17:31,084 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-08-25 05:17:31,084 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 05:17:31,205 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 05:17:31,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 335 transitions, 686 flow [2023-08-25 05:17:31,375 INFO L124 PetriNetUnfolderBase]: 15/333 cut-off events. [2023-08-25 05:17:31,375 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 05:17:31,386 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. [2023-08-25 05:17:31,387 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 335 transitions, 686 flow [2023-08-25 05:17:31,394 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 316 places, 324 transitions, 660 flow [2023-08-25 05:17:31,397 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 05:17:31,406 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 316 places, 324 transitions, 660 flow [2023-08-25 05:17:31,408 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 316 places, 324 transitions, 660 flow [2023-08-25 05:17:31,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 324 transitions, 660 flow [2023-08-25 05:17:31,490 INFO L124 PetriNetUnfolderBase]: 15/324 cut-off events. [2023-08-25 05:17:31,491 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 05:17:31,493 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. [2023-08-25 05:17:31,503 INFO L119 LiptonReduction]: Number of co-enabled transitions 21296 [2023-08-25 05:17:39,463 INFO L134 LiptonReduction]: Checked pairs total: 25615 [2023-08-25 05:17:39,463 INFO L136 LiptonReduction]: Total number of compositions: 428 [2023-08-25 05:17:39,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 05:17:39,483 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;@3dd1ff42, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 05:17:39,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2023-08-25 05:17:39,484 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 05:17:39,485 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 05:17:39,485 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 05:17:39,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:39,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 05:17:39,486 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)] === [2023-08-25 05:17:39,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:39,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1323, now seen corresponding path program 1 times [2023-08-25 05:17:39,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:39,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122402368] [2023-08-25 05:17:39,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:39,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:39,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:39,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122402368] [2023-08-25 05:17:39,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122402368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:17:39,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:17:39,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 05:17:39,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316685646] [2023-08-25 05:17:39,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:17:39,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 05:17:39,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:39,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 05:17:39,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 05:17:39,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 763 [2023-08-25 05:17:39,655 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) [2023-08-25 05:17:39,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:39,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 763 [2023-08-25 05:17:39,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:39,734 INFO L124 PetriNetUnfolderBase]: 89/180 cut-off events. [2023-08-25 05:17:39,735 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-25 05:17:39,735 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. [2023-08-25 05:17:39,737 INFO L140 encePairwiseOnDemand]: 729/763 looper letters, 16 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2023-08-25 05:17:39,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 22 transitions, 88 flow [2023-08-25 05:17:39,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 05:17:39,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 05:17:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 686 transitions. [2023-08-25 05:17:39,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44954128440366975 [2023-08-25 05:17:39,753 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 686 transitions. [2023-08-25 05:17:39,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 686 transitions. [2023-08-25 05:17:39,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:39,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 686 transitions. [2023-08-25 05:17:39,762 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) [2023-08-25 05:17:39,768 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) [2023-08-25 05:17:39,769 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) [2023-08-25 05:17:39,771 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 124 flow. Second operand 2 states and 686 transitions. [2023-08-25 05:17:39,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 22 transitions, 88 flow [2023-08-25 05:17:39,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 22 transitions, 80 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 05:17:39,775 INFO L231 Difference]: Finished difference. Result has 24 places, 22 transitions, 48 flow [2023-08-25 05:17:39,777 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} [2023-08-25 05:17:39,780 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -34 predicate places. [2023-08-25 05:17:39,780 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 22 transitions, 48 flow [2023-08-25 05:17:39,781 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) [2023-08-25 05:17:39,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:39,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 05:17:39,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 05:17:39,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:39,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:39,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1294106186, now seen corresponding path program 1 times [2023-08-25 05:17:39,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:39,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541876501] [2023-08-25 05:17:39,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:39,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:39,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:39,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541876501] [2023-08-25 05:17:39,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541876501] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:17:39,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:17:39,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 05:17:39,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648383511] [2023-08-25 05:17:39,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:17:39,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 05:17:39,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:39,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 05:17:39,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 05:17:39,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 763 [2023-08-25 05:17:39,860 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) [2023-08-25 05:17:39,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:39,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 763 [2023-08-25 05:17:39,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:39,924 INFO L124 PetriNetUnfolderBase]: 113/200 cut-off events. [2023-08-25 05:17:39,924 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-25 05:17:39,925 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. [2023-08-25 05:17:39,926 INFO L140 encePairwiseOnDemand]: 759/763 looper letters, 21 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-25 05:17:39,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 25 transitions, 101 flow [2023-08-25 05:17:39,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 05:17:39,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 05:17:39,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 952 transitions. [2023-08-25 05:17:39,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41590214067278286 [2023-08-25 05:17:39,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 952 transitions. [2023-08-25 05:17:39,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 952 transitions. [2023-08-25 05:17:39,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:39,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 952 transitions. [2023-08-25 05:17:39,933 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) [2023-08-25 05:17:39,939 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) [2023-08-25 05:17:39,940 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) [2023-08-25 05:17:39,940 INFO L175 Difference]: Start difference. First operand has 24 places, 22 transitions, 48 flow. Second operand 3 states and 952 transitions. [2023-08-25 05:17:39,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 25 transitions, 101 flow [2023-08-25 05:17:39,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 25 transitions, 101 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 05:17:39,942 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 58 flow [2023-08-25 05:17:39,942 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} [2023-08-25 05:17:39,943 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -33 predicate places. [2023-08-25 05:17:39,943 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 58 flow [2023-08-25 05:17:39,944 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) [2023-08-25 05:17:39,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:39,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:17:39,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 05:17:39,945 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:39,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:39,947 INFO L85 PathProgramCache]: Analyzing trace with hash -785232228, now seen corresponding path program 1 times [2023-08-25 05:17:39,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:39,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083162323] [2023-08-25 05:17:39,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:39,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:40,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:40,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:40,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083162323] [2023-08-25 05:17:40,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083162323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:17:40,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:17:40,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 05:17:40,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281725064] [2023-08-25 05:17:40,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:17:40,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 05:17:40,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:40,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 05:17:40,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 05:17:40,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 763 [2023-08-25 05:17:40,567 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) [2023-08-25 05:17:40,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:40,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 763 [2023-08-25 05:17:40,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:40,707 INFO L124 PetriNetUnfolderBase]: 131/270 cut-off events. [2023-08-25 05:17:40,707 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-25 05:17:40,708 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. [2023-08-25 05:17:40,709 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 29 selfloop transitions, 5 changer transitions 6/46 dead transitions. [2023-08-25 05:17:40,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 46 transitions, 192 flow [2023-08-25 05:17:40,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 05:17:40,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 05:17:40,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1541 transitions. [2023-08-25 05:17:40,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039318479685452 [2023-08-25 05:17:40,713 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1541 transitions. [2023-08-25 05:17:40,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1541 transitions. [2023-08-25 05:17:40,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:40,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1541 transitions. [2023-08-25 05:17:40,717 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) [2023-08-25 05:17:40,723 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) [2023-08-25 05:17:40,725 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) [2023-08-25 05:17:40,726 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 58 flow. Second operand 5 states and 1541 transitions. [2023-08-25 05:17:40,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 46 transitions, 192 flow [2023-08-25 05:17:40,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 46 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 05:17:40,728 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 92 flow [2023-08-25 05:17:40,728 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} [2023-08-25 05:17:40,729 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -26 predicate places. [2023-08-25 05:17:40,730 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 92 flow [2023-08-25 05:17:40,731 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) [2023-08-25 05:17:40,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:40,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:17:40,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 05:17:40,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:40,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:40,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1136236368, now seen corresponding path program 2 times [2023-08-25 05:17:40,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:40,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669667312] [2023-08-25 05:17:40,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:40,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:41,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:41,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:41,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669667312] [2023-08-25 05:17:41,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669667312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:17:41,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:17:41,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 05:17:41,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777409088] [2023-08-25 05:17:41,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:17:41,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 05:17:41,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:41,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 05:17:41,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 05:17:41,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 763 [2023-08-25 05:17:41,027 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) [2023-08-25 05:17:41,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:41,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 763 [2023-08-25 05:17:41,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:41,147 INFO L124 PetriNetUnfolderBase]: 126/259 cut-off events. [2023-08-25 05:17:41,147 INFO L125 PetriNetUnfolderBase]: For 68/74 co-relation queries the response was YES. [2023-08-25 05:17:41,148 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. [2023-08-25 05:17:41,149 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 26 selfloop transitions, 6 changer transitions 6/44 dead transitions. [2023-08-25 05:17:41,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 217 flow [2023-08-25 05:17:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 05:17:41,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 05:17:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1538 transitions. [2023-08-25 05:17:41,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40314547837483616 [2023-08-25 05:17:41,175 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1538 transitions. [2023-08-25 05:17:41,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1538 transitions. [2023-08-25 05:17:41,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:41,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1538 transitions. [2023-08-25 05:17:41,181 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) [2023-08-25 05:17:41,188 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) [2023-08-25 05:17:41,190 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) [2023-08-25 05:17:41,190 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 92 flow. Second operand 5 states and 1538 transitions. [2023-08-25 05:17:41,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 217 flow [2023-08-25 05:17:41,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 215 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 05:17:41,195 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 124 flow [2023-08-25 05:17:41,195 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} [2023-08-25 05:17:41,197 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -21 predicate places. [2023-08-25 05:17:41,197 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 124 flow [2023-08-25 05:17:41,198 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) [2023-08-25 05:17:41,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:41,198 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:17:41,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 05:17:41,199 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:41,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:41,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1987507590, now seen corresponding path program 1 times [2023-08-25 05:17:41,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:41,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237153987] [2023-08-25 05:17:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:41,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:41,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:41,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237153987] [2023-08-25 05:17:41,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237153987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:17:41,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:17:41,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 05:17:41,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776490126] [2023-08-25 05:17:41,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:17:41,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 05:17:41,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:41,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 05:17:41,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 05:17:41,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:17:41,290 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) [2023-08-25 05:17:41,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:41,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:17:41,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:41,428 INFO L124 PetriNetUnfolderBase]: 217/412 cut-off events. [2023-08-25 05:17:41,429 INFO L125 PetriNetUnfolderBase]: For 253/253 co-relation queries the response was YES. [2023-08-25 05:17:41,433 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. [2023-08-25 05:17:41,434 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 41 selfloop transitions, 5 changer transitions 9/59 dead transitions. [2023-08-25 05:17:41,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 349 flow [2023-08-25 05:17:41,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 05:17:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 05:17:41,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1566 transitions. [2023-08-25 05:17:41,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41048492791612057 [2023-08-25 05:17:41,440 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1566 transitions. [2023-08-25 05:17:41,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1566 transitions. [2023-08-25 05:17:41,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:41,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1566 transitions. [2023-08-25 05:17:41,446 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) [2023-08-25 05:17:41,453 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) [2023-08-25 05:17:41,455 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) [2023-08-25 05:17:41,455 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 124 flow. Second operand 5 states and 1566 transitions. [2023-08-25 05:17:41,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 59 transitions, 349 flow [2023-08-25 05:17:41,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 59 transitions, 332 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-25 05:17:41,462 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 149 flow [2023-08-25 05:17:41,462 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} [2023-08-25 05:17:41,464 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -17 predicate places. [2023-08-25 05:17:41,464 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 149 flow [2023-08-25 05:17:41,465 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) [2023-08-25 05:17:41,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:41,465 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:17:41,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 05:17:41,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:41,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:41,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1723219068, now seen corresponding path program 2 times [2023-08-25 05:17:41,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:41,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731915669] [2023-08-25 05:17:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:41,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:41,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:41,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:41,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731915669] [2023-08-25 05:17:41,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731915669] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:17:41,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:17:41,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 05:17:41,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494055871] [2023-08-25 05:17:41,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:17:41,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 05:17:41,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:41,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 05:17:41,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-25 05:17:41,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:17:41,560 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) [2023-08-25 05:17:41,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:41,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:17:41,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:41,705 INFO L124 PetriNetUnfolderBase]: 254/474 cut-off events. [2023-08-25 05:17:41,705 INFO L125 PetriNetUnfolderBase]: For 577/577 co-relation queries the response was YES. [2023-08-25 05:17:41,706 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. [2023-08-25 05:17:41,708 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 34 selfloop transitions, 9 changer transitions 7/54 dead transitions. [2023-08-25 05:17:41,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 361 flow [2023-08-25 05:17:41,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 05:17:41,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 05:17:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1560 transitions. [2023-08-25 05:17:41,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089121887287025 [2023-08-25 05:17:41,714 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1560 transitions. [2023-08-25 05:17:41,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1560 transitions. [2023-08-25 05:17:41,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:41,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1560 transitions. [2023-08-25 05:17:41,718 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) [2023-08-25 05:17:41,722 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) [2023-08-25 05:17:41,724 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) [2023-08-25 05:17:41,725 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 149 flow. Second operand 5 states and 1560 transitions. [2023-08-25 05:17:41,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 361 flow [2023-08-25 05:17:41,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 340 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-25 05:17:41,728 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 206 flow [2023-08-25 05:17:41,728 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} [2023-08-25 05:17:41,729 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -14 predicate places. [2023-08-25 05:17:41,729 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 206 flow [2023-08-25 05:17:41,730 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) [2023-08-25 05:17:41,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:41,730 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:17:41,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 05:17:41,730 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:41,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:41,731 INFO L85 PathProgramCache]: Analyzing trace with hash -51354616, now seen corresponding path program 3 times [2023-08-25 05:17:41,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:41,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753408293] [2023-08-25 05:17:41,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:41,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:41,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:41,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753408293] [2023-08-25 05:17:41,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753408293] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:17:41,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483756220] [2023-08-25 05:17:41,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:17:41,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:17:41,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:17:41,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:17:41,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 05:17:41,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 05:17:41,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:17:41,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-25 05:17:41,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:17:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:42,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:17:42,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:42,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483756220] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:17:42,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:17:42,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-25 05:17:42,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335706446] [2023-08-25 05:17:42,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:17:42,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-25 05:17:42,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:42,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-25 05:17:42,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-25 05:17:42,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:17:42,069 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) [2023-08-25 05:17:42,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:42,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:17:42,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:42,273 INFO L124 PetriNetUnfolderBase]: 275/510 cut-off events. [2023-08-25 05:17:42,274 INFO L125 PetriNetUnfolderBase]: For 794/797 co-relation queries the response was YES. [2023-08-25 05:17:42,275 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. [2023-08-25 05:17:42,277 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 54 selfloop transitions, 20 changer transitions 0/78 dead transitions. [2023-08-25 05:17:42,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 78 transitions, 555 flow [2023-08-25 05:17:42,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 05:17:42,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 05:17:42,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2491 transitions. [2023-08-25 05:17:42,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40809305373525556 [2023-08-25 05:17:42,284 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2491 transitions. [2023-08-25 05:17:42,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2491 transitions. [2023-08-25 05:17:42,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:42,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2491 transitions. [2023-08-25 05:17:42,290 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) [2023-08-25 05:17:42,297 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) [2023-08-25 05:17:42,299 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) [2023-08-25 05:17:42,299 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 206 flow. Second operand 8 states and 2491 transitions. [2023-08-25 05:17:42,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 78 transitions, 555 flow [2023-08-25 05:17:42,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 78 transitions, 555 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 05:17:42,303 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 364 flow [2023-08-25 05:17:42,303 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} [2023-08-25 05:17:42,304 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2023-08-25 05:17:42,304 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 364 flow [2023-08-25 05:17:42,305 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) [2023-08-25 05:17:42,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:42,305 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:17:42,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 05:17:42,511 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 [2023-08-25 05:17:42,512 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:42,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:42,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1724951012, now seen corresponding path program 4 times [2023-08-25 05:17:42,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:42,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987043846] [2023-08-25 05:17:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:42,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:42,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:42,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987043846] [2023-08-25 05:17:42,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987043846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:17:42,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:17:42,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 05:17:42,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030041490] [2023-08-25 05:17:42,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:17:42,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 05:17:42,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:42,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 05:17:42,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 05:17:42,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:17:42,584 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) [2023-08-25 05:17:42,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:42,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:17:42,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:42,711 INFO L124 PetriNetUnfolderBase]: 266/494 cut-off events. [2023-08-25 05:17:42,711 INFO L125 PetriNetUnfolderBase]: For 1441/1458 co-relation queries the response was YES. [2023-08-25 05:17:42,713 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. [2023-08-25 05:17:42,715 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 36 selfloop transitions, 14 changer transitions 7/61 dead transitions. [2023-08-25 05:17:42,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 525 flow [2023-08-25 05:17:42,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 05:17:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 05:17:42,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1560 transitions. [2023-08-25 05:17:42,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089121887287025 [2023-08-25 05:17:42,720 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1560 transitions. [2023-08-25 05:17:42,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1560 transitions. [2023-08-25 05:17:42,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:42,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1560 transitions. [2023-08-25 05:17:42,724 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) [2023-08-25 05:17:42,728 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) [2023-08-25 05:17:42,729 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) [2023-08-25 05:17:42,729 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 364 flow. Second operand 5 states and 1560 transitions. [2023-08-25 05:17:42,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 525 flow [2023-08-25 05:17:42,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 61 transitions, 499 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-25 05:17:42,734 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 344 flow [2023-08-25 05:17:42,734 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} [2023-08-25 05:17:42,734 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-08-25 05:17:42,735 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 344 flow [2023-08-25 05:17:42,735 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) [2023-08-25 05:17:42,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:42,735 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:17:42,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 05:17:42,735 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:42,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:42,736 INFO L85 PathProgramCache]: Analyzing trace with hash -625068852, now seen corresponding path program 5 times [2023-08-25 05:17:42,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:42,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620581261] [2023-08-25 05:17:42,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:42,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:42,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:42,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620581261] [2023-08-25 05:17:42,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620581261] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:17:42,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728030672] [2023-08-25 05:17:42,797 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:17:42,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:17:42,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:17:42,799 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:17:42,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 05:17:42,898 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:17:42,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:17:42,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-25 05:17:42,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:17:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:42,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:17:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:42,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728030672] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:17:42,962 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:17:42,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-25 05:17:42,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681011609] [2023-08-25 05:17:42,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:17:42,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 05:17:42,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:42,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 05:17:42,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-25 05:17:42,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:17:42,967 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) [2023-08-25 05:17:42,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:42,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:17:42,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:43,224 INFO L124 PetriNetUnfolderBase]: 289/548 cut-off events. [2023-08-25 05:17:43,224 INFO L125 PetriNetUnfolderBase]: For 1489/1489 co-relation queries the response was YES. [2023-08-25 05:17:43,226 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. [2023-08-25 05:17:43,229 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 52 selfloop transitions, 47 changer transitions 1/104 dead transitions. [2023-08-25 05:17:43,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 104 transitions, 837 flow [2023-08-25 05:17:43,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 05:17:43,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 05:17:43,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3415 transitions. [2023-08-25 05:17:43,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40688669129036104 [2023-08-25 05:17:43,237 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3415 transitions. [2023-08-25 05:17:43,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3415 transitions. [2023-08-25 05:17:43,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:43,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3415 transitions. [2023-08-25 05:17:43,244 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) [2023-08-25 05:17:43,253 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) [2023-08-25 05:17:43,255 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) [2023-08-25 05:17:43,255 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 344 flow. Second operand 11 states and 3415 transitions. [2023-08-25 05:17:43,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 104 transitions, 837 flow [2023-08-25 05:17:43,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 772 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-08-25 05:17:43,260 INFO L231 Difference]: Finished difference. Result has 62 places, 70 transitions, 562 flow [2023-08-25 05:17:43,260 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} [2023-08-25 05:17:43,260 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2023-08-25 05:17:43,260 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 70 transitions, 562 flow [2023-08-25 05:17:43,261 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) [2023-08-25 05:17:43,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:43,261 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:17:43,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 05:17:43,467 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 [2023-08-25 05:17:43,467 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:43,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:43,468 INFO L85 PathProgramCache]: Analyzing trace with hash 940938830, now seen corresponding path program 6 times [2023-08-25 05:17:43,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:43,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466251860] [2023-08-25 05:17:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:43,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:43,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:43,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:43,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466251860] [2023-08-25 05:17:43,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466251860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:17:43,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:17:43,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 05:17:43,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073141969] [2023-08-25 05:17:43,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:17:43,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 05:17:43,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:43,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 05:17:43,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 05:17:43,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:17:43,538 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) [2023-08-25 05:17:43,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:43,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:17:43,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:43,679 INFO L124 PetriNetUnfolderBase]: 267/511 cut-off events. [2023-08-25 05:17:43,679 INFO L125 PetriNetUnfolderBase]: For 1624/1640 co-relation queries the response was YES. [2023-08-25 05:17:43,681 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. [2023-08-25 05:17:43,684 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 57 selfloop transitions, 20 changer transitions 1/82 dead transitions. [2023-08-25 05:17:43,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 82 transitions, 768 flow [2023-08-25 05:17:43,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 05:17:43,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 05:17:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1867 transitions. [2023-08-25 05:17:43,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40782000873743995 [2023-08-25 05:17:43,689 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1867 transitions. [2023-08-25 05:17:43,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1867 transitions. [2023-08-25 05:17:43,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:43,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1867 transitions. [2023-08-25 05:17:43,693 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) [2023-08-25 05:17:43,698 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) [2023-08-25 05:17:43,698 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) [2023-08-25 05:17:43,699 INFO L175 Difference]: Start difference. First operand has 62 places, 70 transitions, 562 flow. Second operand 6 states and 1867 transitions. [2023-08-25 05:17:43,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 82 transitions, 768 flow [2023-08-25 05:17:43,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 82 transitions, 715 flow, removed 19 selfloop flow, removed 1 redundant places. [2023-08-25 05:17:43,705 INFO L231 Difference]: Finished difference. Result has 67 places, 69 transitions, 548 flow [2023-08-25 05:17:43,705 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} [2023-08-25 05:17:43,706 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 9 predicate places. [2023-08-25 05:17:43,706 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 69 transitions, 548 flow [2023-08-25 05:17:43,706 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) [2023-08-25 05:17:43,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:43,706 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:17:43,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 05:17:43,707 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:43,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:43,707 INFO L85 PathProgramCache]: Analyzing trace with hash -585773893, now seen corresponding path program 1 times [2023-08-25 05:17:43,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:43,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427112425] [2023-08-25 05:17:43,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:43,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:43,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:43,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427112425] [2023-08-25 05:17:43,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427112425] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:17:43,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:17:43,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-25 05:17:43,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749422149] [2023-08-25 05:17:43,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:17:43,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 05:17:43,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:43,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 05:17:43,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-25 05:17:43,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:17:43,782 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) [2023-08-25 05:17:43,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:43,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:17:43,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:43,918 INFO L124 PetriNetUnfolderBase]: 290/545 cut-off events. [2023-08-25 05:17:43,919 INFO L125 PetriNetUnfolderBase]: For 1578/1592 co-relation queries the response was YES. [2023-08-25 05:17:43,921 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. [2023-08-25 05:17:43,924 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 70 selfloop transitions, 30 changer transitions 0/104 dead transitions. [2023-08-25 05:17:43,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 104 transitions, 932 flow [2023-08-25 05:17:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 05:17:43,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 05:17:43,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2181 transitions. [2023-08-25 05:17:43,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40835049616176744 [2023-08-25 05:17:43,929 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2181 transitions. [2023-08-25 05:17:43,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2181 transitions. [2023-08-25 05:17:43,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:43,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2181 transitions. [2023-08-25 05:17:43,934 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) [2023-08-25 05:17:43,939 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) [2023-08-25 05:17:43,940 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) [2023-08-25 05:17:43,941 INFO L175 Difference]: Start difference. First operand has 67 places, 69 transitions, 548 flow. Second operand 7 states and 2181 transitions. [2023-08-25 05:17:43,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 104 transitions, 932 flow [2023-08-25 05:17:43,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 104 transitions, 855 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-08-25 05:17:43,946 INFO L231 Difference]: Finished difference. Result has 67 places, 74 transitions, 631 flow [2023-08-25 05:17:43,947 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} [2023-08-25 05:17:43,947 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 9 predicate places. [2023-08-25 05:17:43,947 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 74 transitions, 631 flow [2023-08-25 05:17:43,948 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) [2023-08-25 05:17:43,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:43,948 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:17:43,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 05:17:43,948 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:43,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:43,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1422702219, now seen corresponding path program 2 times [2023-08-25 05:17:43,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:43,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879335387] [2023-08-25 05:17:43,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:43,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:44,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:44,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879335387] [2023-08-25 05:17:44,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879335387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:17:44,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:17:44,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 05:17:44,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566132220] [2023-08-25 05:17:44,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:17:44,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 05:17:44,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:44,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 05:17:44,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-25 05:17:44,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:17:44,017 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) [2023-08-25 05:17:44,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:44,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:17:44,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:44,134 INFO L124 PetriNetUnfolderBase]: 286/548 cut-off events. [2023-08-25 05:17:44,134 INFO L125 PetriNetUnfolderBase]: For 1776/1798 co-relation queries the response was YES. [2023-08-25 05:17:44,136 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. [2023-08-25 05:17:44,139 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 60 selfloop transitions, 21 changer transitions 0/85 dead transitions. [2023-08-25 05:17:44,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 85 transitions, 836 flow [2023-08-25 05:17:44,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 05:17:44,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 05:17:44,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1555 transitions. [2023-08-25 05:17:44,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076015727391874 [2023-08-25 05:17:44,143 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1555 transitions. [2023-08-25 05:17:44,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1555 transitions. [2023-08-25 05:17:44,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:44,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1555 transitions. [2023-08-25 05:17:44,146 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) [2023-08-25 05:17:44,151 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) [2023-08-25 05:17:44,151 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) [2023-08-25 05:17:44,151 INFO L175 Difference]: Start difference. First operand has 67 places, 74 transitions, 631 flow. Second operand 5 states and 1555 transitions. [2023-08-25 05:17:44,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 85 transitions, 836 flow [2023-08-25 05:17:44,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 779 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-25 05:17:44,158 INFO L231 Difference]: Finished difference. Result has 69 places, 74 transitions, 619 flow [2023-08-25 05:17:44,158 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} [2023-08-25 05:17:44,159 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2023-08-25 05:17:44,159 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 74 transitions, 619 flow [2023-08-25 05:17:44,159 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) [2023-08-25 05:17:44,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:44,159 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:17:44,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 05:17:44,160 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:44,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:44,160 INFO L85 PathProgramCache]: Analyzing trace with hash -90118457, now seen corresponding path program 3 times [2023-08-25 05:17:44,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:44,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375715688] [2023-08-25 05:17:44,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:44,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:44,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:44,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375715688] [2023-08-25 05:17:44,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375715688] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:17:44,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852035222] [2023-08-25 05:17:44,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:17:44,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:17:44,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:17:44,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:17:44,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 05:17:44,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 05:17:44,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:17:44,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-25 05:17:44,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:17:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:44,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:17:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:44,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852035222] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:17:44,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:17:44,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-08-25 05:17:44,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351958705] [2023-08-25 05:17:44,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:17:44,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 05:17:44,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:44,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 05:17:44,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-08-25 05:17:44,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:17:44,443 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) [2023-08-25 05:17:44,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:44,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:17:44,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:44,724 INFO L124 PetriNetUnfolderBase]: 324/627 cut-off events. [2023-08-25 05:17:44,724 INFO L125 PetriNetUnfolderBase]: For 1941/1955 co-relation queries the response was YES. [2023-08-25 05:17:44,726 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. [2023-08-25 05:17:44,729 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 79 selfloop transitions, 37 changer transitions 0/120 dead transitions. [2023-08-25 05:17:44,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 120 transitions, 1078 flow [2023-08-25 05:17:44,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 05:17:44,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 05:17:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3413 transitions. [2023-08-25 05:17:44,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40664839747408554 [2023-08-25 05:17:44,737 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3413 transitions. [2023-08-25 05:17:44,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3413 transitions. [2023-08-25 05:17:44,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:44,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3413 transitions. [2023-08-25 05:17:44,744 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) [2023-08-25 05:17:44,754 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) [2023-08-25 05:17:44,755 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) [2023-08-25 05:17:44,755 INFO L175 Difference]: Start difference. First operand has 69 places, 74 transitions, 619 flow. Second operand 11 states and 3413 transitions. [2023-08-25 05:17:44,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 120 transitions, 1078 flow [2023-08-25 05:17:44,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 120 transitions, 1055 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 05:17:44,762 INFO L231 Difference]: Finished difference. Result has 81 places, 86 transitions, 816 flow [2023-08-25 05:17:44,763 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} [2023-08-25 05:17:44,764 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-08-25 05:17:44,764 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 86 transitions, 816 flow [2023-08-25 05:17:44,765 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) [2023-08-25 05:17:44,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:44,765 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:17:44,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 05:17:44,970 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 [2023-08-25 05:17:44,971 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:44,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:44,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1048920837, now seen corresponding path program 4 times [2023-08-25 05:17:44,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:44,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471467873] [2023-08-25 05:17:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:44,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:45,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:45,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471467873] [2023-08-25 05:17:45,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471467873] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:17:45,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:17:45,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 05:17:45,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022784221] [2023-08-25 05:17:45,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:17:45,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 05:17:45,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:45,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 05:17:45,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 05:17:45,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:17:45,048 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) [2023-08-25 05:17:45,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:45,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:17:45,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:45,193 INFO L124 PetriNetUnfolderBase]: 324/637 cut-off events. [2023-08-25 05:17:45,193 INFO L125 PetriNetUnfolderBase]: For 2733/2755 co-relation queries the response was YES. [2023-08-25 05:17:45,196 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. [2023-08-25 05:17:45,199 INFO L140 encePairwiseOnDemand]: 758/763 looper letters, 72 selfloop transitions, 27 changer transitions 3/106 dead transitions. [2023-08-25 05:17:45,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 106 transitions, 1116 flow [2023-08-25 05:17:45,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 05:17:45,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 05:17:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1562 transitions. [2023-08-25 05:17:45,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4094364351245085 [2023-08-25 05:17:45,206 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1562 transitions. [2023-08-25 05:17:45,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1562 transitions. [2023-08-25 05:17:45,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:45,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1562 transitions. [2023-08-25 05:17:45,210 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) [2023-08-25 05:17:45,213 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) [2023-08-25 05:17:45,214 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) [2023-08-25 05:17:45,214 INFO L175 Difference]: Start difference. First operand has 81 places, 86 transitions, 816 flow. Second operand 5 states and 1562 transitions. [2023-08-25 05:17:45,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 106 transitions, 1116 flow [2023-08-25 05:17:45,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 106 transitions, 1036 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-08-25 05:17:45,225 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 806 flow [2023-08-25 05:17:45,225 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} [2023-08-25 05:17:45,226 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2023-08-25 05:17:45,226 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 806 flow [2023-08-25 05:17:45,226 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) [2023-08-25 05:17:45,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:45,227 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:17:45,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-25 05:17:45,227 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:45,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:45,227 INFO L85 PathProgramCache]: Analyzing trace with hash -553252555, now seen corresponding path program 5 times [2023-08-25 05:17:45,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:45,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734335605] [2023-08-25 05:17:45,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:45,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:45,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:45,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734335605] [2023-08-25 05:17:45,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734335605] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:17:45,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:17:45,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 05:17:45,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973008328] [2023-08-25 05:17:45,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:17:45,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 05:17:45,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:45,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 05:17:45,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 05:17:45,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:17:45,306 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) [2023-08-25 05:17:45,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:45,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:17:45,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:45,435 INFO L124 PetriNetUnfolderBase]: 311/608 cut-off events. [2023-08-25 05:17:45,436 INFO L125 PetriNetUnfolderBase]: For 3000/3022 co-relation queries the response was YES. [2023-08-25 05:17:45,438 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. [2023-08-25 05:17:45,441 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 60 selfloop transitions, 29 changer transitions 0/93 dead transitions. [2023-08-25 05:17:45,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 93 transitions, 994 flow [2023-08-25 05:17:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 05:17:45,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 05:17:45,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1556 transitions. [2023-08-25 05:17:45,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40786369593709043 [2023-08-25 05:17:45,445 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1556 transitions. [2023-08-25 05:17:45,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1556 transitions. [2023-08-25 05:17:45,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:45,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1556 transitions. [2023-08-25 05:17:45,449 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) [2023-08-25 05:17:45,452 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) [2023-08-25 05:17:45,453 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) [2023-08-25 05:17:45,453 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 806 flow. Second operand 5 states and 1556 transitions. [2023-08-25 05:17:45,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 93 transitions, 994 flow [2023-08-25 05:17:45,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 93 transitions, 942 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-25 05:17:45,464 INFO L231 Difference]: Finished difference. Result has 83 places, 85 transitions, 802 flow [2023-08-25 05:17:45,464 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} [2023-08-25 05:17:45,464 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 25 predicate places. [2023-08-25 05:17:45,464 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 85 transitions, 802 flow [2023-08-25 05:17:45,465 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) [2023-08-25 05:17:45,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:45,465 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:17:45,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-25 05:17:45,465 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:45,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:45,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1588026089, now seen corresponding path program 6 times [2023-08-25 05:17:45,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:45,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108357651] [2023-08-25 05:17:45,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:45,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:45,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:45,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108357651] [2023-08-25 05:17:45,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108357651] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:17:45,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290524104] [2023-08-25 05:17:45,552 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:17:45,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:17:45,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:17:45,553 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:17:45,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 05:17:45,678 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 05:17:45,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:17:45,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-25 05:17:45,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:17:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:45,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:17:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:45,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290524104] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:17:45,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:17:45,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-08-25 05:17:45,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107733516] [2023-08-25 05:17:45,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:17:45,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 05:17:45,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:45,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 05:17:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-08-25 05:17:45,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:17:45,765 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) [2023-08-25 05:17:45,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:45,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:17:45,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:45,941 INFO L124 PetriNetUnfolderBase]: 281/552 cut-off events. [2023-08-25 05:17:45,941 INFO L125 PetriNetUnfolderBase]: For 2923/2945 co-relation queries the response was YES. [2023-08-25 05:17:45,943 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. [2023-08-25 05:17:45,946 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 64 selfloop transitions, 30 changer transitions 1/99 dead transitions. [2023-08-25 05:17:45,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 99 transitions, 1033 flow [2023-08-25 05:17:45,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 05:17:45,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 05:17:45,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2175 transitions. [2023-08-25 05:17:45,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072271110278974 [2023-08-25 05:17:45,951 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2175 transitions. [2023-08-25 05:17:45,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2175 transitions. [2023-08-25 05:17:45,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:45,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2175 transitions. [2023-08-25 05:17:45,956 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) [2023-08-25 05:17:45,961 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) [2023-08-25 05:17:45,962 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) [2023-08-25 05:17:45,962 INFO L175 Difference]: Start difference. First operand has 83 places, 85 transitions, 802 flow. Second operand 7 states and 2175 transitions. [2023-08-25 05:17:45,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 99 transitions, 1033 flow [2023-08-25 05:17:45,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 99 transitions, 970 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 05:17:45,971 INFO L231 Difference]: Finished difference. Result has 86 places, 85 transitions, 794 flow [2023-08-25 05:17:45,971 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} [2023-08-25 05:17:45,972 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 28 predicate places. [2023-08-25 05:17:45,973 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 85 transitions, 794 flow [2023-08-25 05:17:45,973 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) [2023-08-25 05:17:45,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:45,974 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] [2023-08-25 05:17:45,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 05:17:46,181 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 [2023-08-25 05:17:46,182 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:46,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:46,182 INFO L85 PathProgramCache]: Analyzing trace with hash 399691671, now seen corresponding path program 1 times [2023-08-25 05:17:46,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:46,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441241262] [2023-08-25 05:17:46,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:46,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:46,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:46,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:46,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441241262] [2023-08-25 05:17:46,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441241262] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:17:46,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324988141] [2023-08-25 05:17:46,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:46,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:17:46,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:17:46,589 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:17:46,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 05:17:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:46,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-25 05:17:46,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:17:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:46,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:17:47,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:47,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324988141] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:17:47,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:17:47,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-25 05:17:47,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046165039] [2023-08-25 05:17:47,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:17:47,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 05:17:47,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:47,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 05:17:47,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-08-25 05:17:47,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:17:47,094 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) [2023-08-25 05:17:47,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:47,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:17:47,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:47,532 INFO L124 PetriNetUnfolderBase]: 392/778 cut-off events. [2023-08-25 05:17:47,532 INFO L125 PetriNetUnfolderBase]: For 3074/3083 co-relation queries the response was YES. [2023-08-25 05:17:47,535 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. [2023-08-25 05:17:47,539 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 92 selfloop transitions, 34 changer transitions 6/146 dead transitions. [2023-08-25 05:17:47,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 146 transitions, 1394 flow [2023-08-25 05:17:47,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 05:17:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 05:17:47,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2677 transitions. [2023-08-25 05:17:47,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38983544488131644 [2023-08-25 05:17:47,545 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2677 transitions. [2023-08-25 05:17:47,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2677 transitions. [2023-08-25 05:17:47,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:47,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2677 transitions. [2023-08-25 05:17:47,551 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) [2023-08-25 05:17:47,557 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) [2023-08-25 05:17:47,558 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) [2023-08-25 05:17:47,558 INFO L175 Difference]: Start difference. First operand has 86 places, 85 transitions, 794 flow. Second operand 9 states and 2677 transitions. [2023-08-25 05:17:47,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 146 transitions, 1394 flow [2023-08-25 05:17:47,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 146 transitions, 1239 flow, removed 23 selfloop flow, removed 9 redundant places. [2023-08-25 05:17:47,568 INFO L231 Difference]: Finished difference. Result has 90 places, 105 transitions, 987 flow [2023-08-25 05:17:47,568 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} [2023-08-25 05:17:47,568 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 32 predicate places. [2023-08-25 05:17:47,569 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 105 transitions, 987 flow [2023-08-25 05:17:47,570 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) [2023-08-25 05:17:47,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:47,570 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] [2023-08-25 05:17:47,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 05:17:47,780 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 [2023-08-25 05:17:47,781 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:47,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:47,781 INFO L85 PathProgramCache]: Analyzing trace with hash -361387481, now seen corresponding path program 2 times [2023-08-25 05:17:47,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:47,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400331993] [2023-08-25 05:17:47,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:47,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:48,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:48,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400331993] [2023-08-25 05:17:48,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400331993] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:17:48,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804640795] [2023-08-25 05:17:48,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:17:48,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:17:48,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:17:48,070 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:17:48,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 05:17:48,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:17:48,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:17:48,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-25 05:17:48,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:17:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:48,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:17:48,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:48,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804640795] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:17:48,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:17:48,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-25 05:17:48,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581406075] [2023-08-25 05:17:48,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:17:48,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 05:17:48,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:48,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 05:17:48,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-08-25 05:17:48,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:17:48,637 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) [2023-08-25 05:17:48,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:48,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:17:48,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:49,037 INFO L124 PetriNetUnfolderBase]: 389/769 cut-off events. [2023-08-25 05:17:49,037 INFO L125 PetriNetUnfolderBase]: For 2927/2941 co-relation queries the response was YES. [2023-08-25 05:17:49,040 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. [2023-08-25 05:17:49,045 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 86 selfloop transitions, 34 changer transitions 6/140 dead transitions. [2023-08-25 05:17:49,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 140 transitions, 1382 flow [2023-08-25 05:17:49,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 05:17:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 05:17:49,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2667 transitions. [2023-08-25 05:17:49,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38837920489296635 [2023-08-25 05:17:49,049 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2667 transitions. [2023-08-25 05:17:49,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2667 transitions. [2023-08-25 05:17:49,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:49,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2667 transitions. [2023-08-25 05:17:49,053 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) [2023-08-25 05:17:49,059 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) [2023-08-25 05:17:49,060 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) [2023-08-25 05:17:49,060 INFO L175 Difference]: Start difference. First operand has 90 places, 105 transitions, 987 flow. Second operand 9 states and 2667 transitions. [2023-08-25 05:17:49,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 140 transitions, 1382 flow [2023-08-25 05:17:49,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 140 transitions, 1355 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-25 05:17:49,071 INFO L231 Difference]: Finished difference. Result has 98 places, 110 transitions, 1104 flow [2023-08-25 05:17:49,071 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} [2023-08-25 05:17:49,072 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 40 predicate places. [2023-08-25 05:17:49,072 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 110 transitions, 1104 flow [2023-08-25 05:17:49,073 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) [2023-08-25 05:17:49,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:49,073 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] [2023-08-25 05:17:49,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-25 05:17:49,278 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 [2023-08-25 05:17:49,279 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:49,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:49,279 INFO L85 PathProgramCache]: Analyzing trace with hash 391931597, now seen corresponding path program 3 times [2023-08-25 05:17:49,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:49,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763874853] [2023-08-25 05:17:49,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:49,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:49,590 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:49,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:49,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763874853] [2023-08-25 05:17:49,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763874853] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:17:49,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594476608] [2023-08-25 05:17:49,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:17:49,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:17:49,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:17:49,592 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:17:49,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 05:17:49,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 05:17:49,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:17:49,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-25 05:17:49,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:17:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:49,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:17:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:50,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594476608] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:17:50,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:17:50,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-25 05:17:50,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648255113] [2023-08-25 05:17:50,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:17:50,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 05:17:50,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:50,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 05:17:50,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-08-25 05:17:50,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:17:50,090 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) [2023-08-25 05:17:50,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:50,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:17:50,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:50,481 INFO L124 PetriNetUnfolderBase]: 386/760 cut-off events. [2023-08-25 05:17:50,481 INFO L125 PetriNetUnfolderBase]: For 3439/3455 co-relation queries the response was YES. [2023-08-25 05:17:50,483 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. [2023-08-25 05:17:50,487 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 87 selfloop transitions, 40 changer transitions 6/147 dead transitions. [2023-08-25 05:17:50,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 147 transitions, 1511 flow [2023-08-25 05:17:50,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 05:17:50,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 05:17:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2963 transitions. [2023-08-25 05:17:50,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38833551769331587 [2023-08-25 05:17:50,492 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2963 transitions. [2023-08-25 05:17:50,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2963 transitions. [2023-08-25 05:17:50,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:50,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2963 transitions. [2023-08-25 05:17:50,497 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) [2023-08-25 05:17:50,503 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) [2023-08-25 05:17:50,504 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) [2023-08-25 05:17:50,505 INFO L175 Difference]: Start difference. First operand has 98 places, 110 transitions, 1104 flow. Second operand 10 states and 2963 transitions. [2023-08-25 05:17:50,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 147 transitions, 1511 flow [2023-08-25 05:17:50,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 147 transitions, 1445 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-25 05:17:50,515 INFO L231 Difference]: Finished difference. Result has 103 places, 112 transitions, 1161 flow [2023-08-25 05:17:50,516 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} [2023-08-25 05:17:50,516 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 45 predicate places. [2023-08-25 05:17:50,516 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 112 transitions, 1161 flow [2023-08-25 05:17:50,517 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) [2023-08-25 05:17:50,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:50,517 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] [2023-08-25 05:17:50,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 05:17:50,727 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 [2023-08-25 05:17:50,728 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:50,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:50,729 INFO L85 PathProgramCache]: Analyzing trace with hash -419624911, now seen corresponding path program 4 times [2023-08-25 05:17:50,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:50,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061291457] [2023-08-25 05:17:50,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:50,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:51,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:51,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061291457] [2023-08-25 05:17:51,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061291457] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:17:51,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381841430] [2023-08-25 05:17:51,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:17:51,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:17:51,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:17:51,051 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:17:51,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 05:17:51,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:17:51,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:17:51,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-25 05:17:51,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:17:51,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:51,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:17:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:51,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381841430] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:17:51,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:17:51,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-25 05:17:51,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319792894] [2023-08-25 05:17:51,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:17:51,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 05:17:51,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:51,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 05:17:51,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-08-25 05:17:51,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:17:51,503 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) [2023-08-25 05:17:51,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:51,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:17:51,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:51,933 INFO L124 PetriNetUnfolderBase]: 454/896 cut-off events. [2023-08-25 05:17:51,934 INFO L125 PetriNetUnfolderBase]: For 4348/4358 co-relation queries the response was YES. [2023-08-25 05:17:51,937 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. [2023-08-25 05:17:51,942 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 110 selfloop transitions, 47 changer transitions 6/177 dead transitions. [2023-08-25 05:17:51,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 177 transitions, 1819 flow [2023-08-25 05:17:51,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 05:17:51,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 05:17:51,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3559 transitions. [2023-08-25 05:17:51,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3887068588903451 [2023-08-25 05:17:51,948 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3559 transitions. [2023-08-25 05:17:51,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3559 transitions. [2023-08-25 05:17:51,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:51,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3559 transitions. [2023-08-25 05:17:51,955 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) [2023-08-25 05:17:51,963 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) [2023-08-25 05:17:51,964 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) [2023-08-25 05:17:51,964 INFO L175 Difference]: Start difference. First operand has 103 places, 112 transitions, 1161 flow. Second operand 12 states and 3559 transitions. [2023-08-25 05:17:51,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 177 transitions, 1819 flow [2023-08-25 05:17:51,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 177 transitions, 1723 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-08-25 05:17:51,982 INFO L231 Difference]: Finished difference. Result has 111 places, 130 transitions, 1380 flow [2023-08-25 05:17:51,982 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} [2023-08-25 05:17:51,983 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 53 predicate places. [2023-08-25 05:17:51,983 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 130 transitions, 1380 flow [2023-08-25 05:17:51,984 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) [2023-08-25 05:17:51,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:51,984 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] [2023-08-25 05:17:51,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-25 05:17:52,190 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 [2023-08-25 05:17:52,190 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:52,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:52,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1896505977, now seen corresponding path program 5 times [2023-08-25 05:17:52,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:52,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654244527] [2023-08-25 05:17:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:52,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:52,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:52,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:52,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654244527] [2023-08-25 05:17:52,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654244527] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:17:52,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165323408] [2023-08-25 05:17:52,516 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:17:52,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:17:52,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:17:52,521 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:17:52,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 05:17:52,633 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:17:52,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:17:52,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-25 05:17:52,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:17:52,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:52,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:17:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:52,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165323408] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:17:52,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:17:52,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-25 05:17:52,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858670936] [2023-08-25 05:17:52,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:17:52,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 05:17:52,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:52,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 05:17:52,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-08-25 05:17:52,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:17:52,950 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) [2023-08-25 05:17:52,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:52,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:17:52,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:53,335 INFO L124 PetriNetUnfolderBase]: 453/889 cut-off events. [2023-08-25 05:17:53,335 INFO L125 PetriNetUnfolderBase]: For 4876/4890 co-relation queries the response was YES. [2023-08-25 05:17:53,339 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. [2023-08-25 05:17:53,346 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 106 selfloop transitions, 46 changer transitions 6/172 dead transitions. [2023-08-25 05:17:53,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 172 transitions, 1879 flow [2023-08-25 05:17:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 05:17:53,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 05:17:53,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2972 transitions. [2023-08-25 05:17:53,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3895150720838794 [2023-08-25 05:17:53,350 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2972 transitions. [2023-08-25 05:17:53,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2972 transitions. [2023-08-25 05:17:53,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:53,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2972 transitions. [2023-08-25 05:17:53,354 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) [2023-08-25 05:17:53,359 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) [2023-08-25 05:17:53,360 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) [2023-08-25 05:17:53,360 INFO L175 Difference]: Start difference. First operand has 111 places, 130 transitions, 1380 flow. Second operand 10 states and 2972 transitions. [2023-08-25 05:17:53,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 172 transitions, 1879 flow [2023-08-25 05:17:53,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 172 transitions, 1809 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-25 05:17:53,382 INFO L231 Difference]: Finished difference. Result has 118 places, 132 transitions, 1442 flow [2023-08-25 05:17:53,382 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} [2023-08-25 05:17:53,382 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 60 predicate places. [2023-08-25 05:17:53,382 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 132 transitions, 1442 flow [2023-08-25 05:17:53,383 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) [2023-08-25 05:17:53,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:53,383 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] [2023-08-25 05:17:53,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 05:17:53,589 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 [2023-08-25 05:17:53,589 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:53,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:53,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1360987687, now seen corresponding path program 6 times [2023-08-25 05:17:53,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:53,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218207861] [2023-08-25 05:17:53,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:53,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:53,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:53,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218207861] [2023-08-25 05:17:53,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218207861] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:17:53,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716077695] [2023-08-25 05:17:53,924 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:17:53,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:17:53,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:17:53,925 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:17:53,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 05:17:54,058 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 05:17:54,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:17:54,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-25 05:17:54,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:17:54,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:54,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:17:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:54,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716077695] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:17:54,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:17:54,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-25 05:17:54,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781345508] [2023-08-25 05:17:54,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:17:54,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 05:17:54,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:54,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 05:17:54,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-08-25 05:17:54,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:17:54,367 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) [2023-08-25 05:17:54,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:54,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:17:54,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:54,830 INFO L124 PetriNetUnfolderBase]: 450/880 cut-off events. [2023-08-25 05:17:54,830 INFO L125 PetriNetUnfolderBase]: For 5150/5164 co-relation queries the response was YES. [2023-08-25 05:17:54,834 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. [2023-08-25 05:17:54,838 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 105 selfloop transitions, 46 changer transitions 7/172 dead transitions. [2023-08-25 05:17:54,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 172 transitions, 1977 flow [2023-08-25 05:17:54,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 05:17:54,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 05:17:54,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3253 transitions. [2023-08-25 05:17:54,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875848921720481 [2023-08-25 05:17:54,843 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3253 transitions. [2023-08-25 05:17:54,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3253 transitions. [2023-08-25 05:17:54,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:54,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3253 transitions. [2023-08-25 05:17:54,847 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) [2023-08-25 05:17:54,853 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) [2023-08-25 05:17:54,854 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) [2023-08-25 05:17:54,854 INFO L175 Difference]: Start difference. First operand has 118 places, 132 transitions, 1442 flow. Second operand 11 states and 3253 transitions. [2023-08-25 05:17:54,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 172 transitions, 1977 flow [2023-08-25 05:17:54,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 172 transitions, 1877 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-25 05:17:54,875 INFO L231 Difference]: Finished difference. Result has 125 places, 139 transitions, 1581 flow [2023-08-25 05:17:54,875 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} [2023-08-25 05:17:54,876 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 67 predicate places. [2023-08-25 05:17:54,876 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 139 transitions, 1581 flow [2023-08-25 05:17:54,877 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) [2023-08-25 05:17:54,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:54,877 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] [2023-08-25 05:17:54,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 05:17:55,082 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 [2023-08-25 05:17:55,083 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:55,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:55,084 INFO L85 PathProgramCache]: Analyzing trace with hash 489597615, now seen corresponding path program 7 times [2023-08-25 05:17:55,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:55,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947911971] [2023-08-25 05:17:55,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:55,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:55,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:55,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:55,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947911971] [2023-08-25 05:17:55,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947911971] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:17:55,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972602045] [2023-08-25 05:17:55,500 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:17:55,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:17:55,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:17:55,501 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:17:55,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 05:17:55,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:55,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-25 05:17:55,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:17:55,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:55,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:17:55,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:55,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972602045] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:17:55,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:17:55,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-25 05:17:55,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113851192] [2023-08-25 05:17:55,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:17:55,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 05:17:55,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:55,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 05:17:55,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-08-25 05:17:55,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:17:55,966 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) [2023-08-25 05:17:55,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:55,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:17:55,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:56,451 INFO L124 PetriNetUnfolderBase]: 579/1129 cut-off events. [2023-08-25 05:17:56,452 INFO L125 PetriNetUnfolderBase]: For 6878/6890 co-relation queries the response was YES. [2023-08-25 05:17:56,457 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. [2023-08-25 05:17:56,467 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 138 selfloop transitions, 43 changer transitions 6/201 dead transitions. [2023-08-25 05:17:56,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 201 transitions, 2354 flow [2023-08-25 05:17:56,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 05:17:56,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 05:17:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3257 transitions. [2023-08-25 05:17:56,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880614798045991 [2023-08-25 05:17:56,474 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3257 transitions. [2023-08-25 05:17:56,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3257 transitions. [2023-08-25 05:17:56,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:56,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3257 transitions. [2023-08-25 05:17:56,481 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) [2023-08-25 05:17:56,489 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) [2023-08-25 05:17:56,490 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) [2023-08-25 05:17:56,490 INFO L175 Difference]: Start difference. First operand has 125 places, 139 transitions, 1581 flow. Second operand 11 states and 3257 transitions. [2023-08-25 05:17:56,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 201 transitions, 2354 flow [2023-08-25 05:17:56,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 201 transitions, 2288 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-25 05:17:56,519 INFO L231 Difference]: Finished difference. Result has 135 places, 163 transitions, 1929 flow [2023-08-25 05:17:56,519 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} [2023-08-25 05:17:56,520 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 77 predicate places. [2023-08-25 05:17:56,520 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 163 transitions, 1929 flow [2023-08-25 05:17:56,521 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) [2023-08-25 05:17:56,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:56,521 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] [2023-08-25 05:17:56,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-25 05:17:56,727 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 [2023-08-25 05:17:56,727 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:56,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:56,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1548088257, now seen corresponding path program 8 times [2023-08-25 05:17:56,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:56,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140462747] [2023-08-25 05:17:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:56,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:57,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:57,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140462747] [2023-08-25 05:17:57,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140462747] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:17:57,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593023478] [2023-08-25 05:17:57,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:17:57,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:17:57,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:17:57,013 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:17:57,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-25 05:17:57,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:17:57,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:17:57,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-25 05:17:57,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:17:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:57,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:17:57,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:57,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593023478] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:17:57,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:17:57,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-25 05:17:57,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516514884] [2023-08-25 05:17:57,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:17:57,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 05:17:57,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:57,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 05:17:57,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-08-25 05:17:57,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:17:57,494 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) [2023-08-25 05:17:57,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:57,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:17:57,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:58,034 INFO L124 PetriNetUnfolderBase]: 585/1149 cut-off events. [2023-08-25 05:17:58,035 INFO L125 PetriNetUnfolderBase]: For 8284/8296 co-relation queries the response was YES. [2023-08-25 05:17:58,040 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. [2023-08-25 05:17:58,046 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 142 selfloop transitions, 44 changer transitions 7/207 dead transitions. [2023-08-25 05:17:58,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 207 transitions, 2574 flow [2023-08-25 05:17:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 05:17:58,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 05:17:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3547 transitions. [2023-08-25 05:17:58,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3873962429008301 [2023-08-25 05:17:58,052 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3547 transitions. [2023-08-25 05:17:58,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3547 transitions. [2023-08-25 05:17:58,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:58,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3547 transitions. [2023-08-25 05:17:58,057 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) [2023-08-25 05:17:58,063 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) [2023-08-25 05:17:58,064 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) [2023-08-25 05:17:58,064 INFO L175 Difference]: Start difference. First operand has 135 places, 163 transitions, 1929 flow. Second operand 12 states and 3547 transitions. [2023-08-25 05:17:58,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 207 transitions, 2574 flow [2023-08-25 05:17:58,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 207 transitions, 2478 flow, removed 42 selfloop flow, removed 2 redundant places. [2023-08-25 05:17:58,105 INFO L231 Difference]: Finished difference. Result has 147 places, 169 transitions, 2045 flow [2023-08-25 05:17:58,105 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} [2023-08-25 05:17:58,106 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 89 predicate places. [2023-08-25 05:17:58,106 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 169 transitions, 2045 flow [2023-08-25 05:17:58,106 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) [2023-08-25 05:17:58,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:58,107 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] [2023-08-25 05:17:58,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-25 05:17:58,312 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 [2023-08-25 05:17:58,312 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:58,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:58,313 INFO L85 PathProgramCache]: Analyzing trace with hash 514105153, now seen corresponding path program 9 times [2023-08-25 05:17:58,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:58,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190850565] [2023-08-25 05:17:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:58,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:17:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:58,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:17:58,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190850565] [2023-08-25 05:17:58,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190850565] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:17:58,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782431342] [2023-08-25 05:17:58,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:17:58,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:17:58,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:17:58,625 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:17:58,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-25 05:17:58,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 05:17:58,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:17:58,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-25 05:17:58,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:17:58,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:58,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:17:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:17:59,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782431342] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:17:59,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:17:59,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-25 05:17:59,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175930917] [2023-08-25 05:17:59,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:17:59,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 05:17:59,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:17:59,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 05:17:59,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-08-25 05:17:59,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:17:59,127 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) [2023-08-25 05:17:59,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:17:59,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:17:59,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:17:59,552 INFO L124 PetriNetUnfolderBase]: 584/1142 cut-off events. [2023-08-25 05:17:59,552 INFO L125 PetriNetUnfolderBase]: For 8590/8602 co-relation queries the response was YES. [2023-08-25 05:17:59,558 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. [2023-08-25 05:17:59,562 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 134 selfloop transitions, 47 changer transitions 6/201 dead transitions. [2023-08-25 05:17:59,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 201 transitions, 2575 flow [2023-08-25 05:17:59,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 05:17:59,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 05:17:59,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2670 transitions. [2023-08-25 05:17:59,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888160768894714 [2023-08-25 05:17:59,568 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2670 transitions. [2023-08-25 05:17:59,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2670 transitions. [2023-08-25 05:17:59,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:17:59,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2670 transitions. [2023-08-25 05:17:59,574 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) [2023-08-25 05:17:59,584 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) [2023-08-25 05:17:59,584 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) [2023-08-25 05:17:59,584 INFO L175 Difference]: Start difference. First operand has 147 places, 169 transitions, 2045 flow. Second operand 9 states and 2670 transitions. [2023-08-25 05:17:59,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 201 transitions, 2575 flow [2023-08-25 05:17:59,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 201 transitions, 2490 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-25 05:17:59,630 INFO L231 Difference]: Finished difference. Result has 151 places, 171 transitions, 2100 flow [2023-08-25 05:17:59,631 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} [2023-08-25 05:17:59,631 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 93 predicate places. [2023-08-25 05:17:59,632 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 171 transitions, 2100 flow [2023-08-25 05:17:59,632 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) [2023-08-25 05:17:59,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:17:59,632 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] [2023-08-25 05:17:59,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-25 05:17:59,838 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 [2023-08-25 05:17:59,838 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:17:59,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:17:59,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1416930561, now seen corresponding path program 10 times [2023-08-25 05:17:59,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:17:59,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562034652] [2023-08-25 05:17:59,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:17:59,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:17:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:00,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:00,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562034652] [2023-08-25 05:18:00,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562034652] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:00,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022589007] [2023-08-25 05:18:00,118 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:18:00,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:00,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:00,119 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:00,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-25 05:18:00,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:18:00,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:00,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-25 05:18:00,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:00,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:00,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022589007] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:00,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:00,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2023-08-25 05:18:00,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486294895] [2023-08-25 05:18:00,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:00,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 05:18:00,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:00,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 05:18:00,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-08-25 05:18:00,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:18:00,539 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) [2023-08-25 05:18:00,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:00,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:18:00,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:00,941 INFO L124 PetriNetUnfolderBase]: 581/1133 cut-off events. [2023-08-25 05:18:00,941 INFO L125 PetriNetUnfolderBase]: For 9089/9101 co-relation queries the response was YES. [2023-08-25 05:18:00,948 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. [2023-08-25 05:18:00,953 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 139 selfloop transitions, 41 changer transitions 6/200 dead transitions. [2023-08-25 05:18:00,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 200 transitions, 2704 flow [2023-08-25 05:18:00,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 05:18:00,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 05:18:00,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2947 transitions. [2023-08-25 05:18:00,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38623853211009174 [2023-08-25 05:18:00,959 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2947 transitions. [2023-08-25 05:18:00,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2947 transitions. [2023-08-25 05:18:00,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:00,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2947 transitions. [2023-08-25 05:18:00,964 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) [2023-08-25 05:18:00,969 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) [2023-08-25 05:18:00,970 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) [2023-08-25 05:18:00,970 INFO L175 Difference]: Start difference. First operand has 151 places, 171 transitions, 2100 flow. Second operand 10 states and 2947 transitions. [2023-08-25 05:18:00,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 200 transitions, 2704 flow [2023-08-25 05:18:01,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 200 transitions, 2574 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-08-25 05:18:01,045 INFO L231 Difference]: Finished difference. Result has 157 places, 180 transitions, 2263 flow [2023-08-25 05:18:01,045 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} [2023-08-25 05:18:01,046 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 99 predicate places. [2023-08-25 05:18:01,046 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 180 transitions, 2263 flow [2023-08-25 05:18:01,047 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) [2023-08-25 05:18:01,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:01,047 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] [2023-08-25 05:18:01,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:01,255 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 [2023-08-25 05:18:01,255 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:01,256 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:01,256 INFO L85 PathProgramCache]: Analyzing trace with hash -203994843, now seen corresponding path program 11 times [2023-08-25 05:18:01,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:01,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346083091] [2023-08-25 05:18:01,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:01,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:01,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:01,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346083091] [2023-08-25 05:18:01,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346083091] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:01,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436822384] [2023-08-25 05:18:01,330 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:18:01,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:01,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:01,331 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:01,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-25 05:18:01,470 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 05:18:01,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:01,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:01,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:01,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:01,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:01,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436822384] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:01,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:01,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-25 05:18:01,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427579670] [2023-08-25 05:18:01,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:01,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 05:18:01,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:01,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 05:18:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-25 05:18:01,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:01,564 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) [2023-08-25 05:18:01,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:01,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:01,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:01,961 INFO L124 PetriNetUnfolderBase]: 803/1497 cut-off events. [2023-08-25 05:18:01,961 INFO L125 PetriNetUnfolderBase]: For 10727/10727 co-relation queries the response was YES. [2023-08-25 05:18:01,971 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. [2023-08-25 05:18:01,978 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 172 selfloop transitions, 86 changer transitions 5/267 dead transitions. [2023-08-25 05:18:01,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 267 transitions, 3486 flow [2023-08-25 05:18:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 05:18:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 05:18:01,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3730 transitions. [2023-08-25 05:18:01,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073831367409349 [2023-08-25 05:18:01,984 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3730 transitions. [2023-08-25 05:18:01,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3730 transitions. [2023-08-25 05:18:01,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:01,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3730 transitions. [2023-08-25 05:18:01,999 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) [2023-08-25 05:18:02,006 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) [2023-08-25 05:18:02,006 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) [2023-08-25 05:18:02,007 INFO L175 Difference]: Start difference. First operand has 157 places, 180 transitions, 2263 flow. Second operand 12 states and 3730 transitions. [2023-08-25 05:18:02,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 267 transitions, 3486 flow [2023-08-25 05:18:02,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 267 transitions, 3401 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-08-25 05:18:02,067 INFO L231 Difference]: Finished difference. Result has 170 places, 209 transitions, 2735 flow [2023-08-25 05:18:02,067 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} [2023-08-25 05:18:02,068 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 112 predicate places. [2023-08-25 05:18:02,068 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 209 transitions, 2735 flow [2023-08-25 05:18:02,068 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) [2023-08-25 05:18:02,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:02,068 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] [2023-08-25 05:18:02,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-25 05:18:02,269 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 [2023-08-25 05:18:02,269 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:02,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:02,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1030705511, now seen corresponding path program 12 times [2023-08-25 05:18:02,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:02,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572699227] [2023-08-25 05:18:02,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:02,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:02,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:02,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572699227] [2023-08-25 05:18:02,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572699227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:02,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169466050] [2023-08-25 05:18:02,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:18:02,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:02,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:02,349 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:02,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-25 05:18:02,505 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 05:18:02,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:02,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:02,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:02,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:02,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169466050] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:02,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:02,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-25 05:18:02,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547461246] [2023-08-25 05:18:02,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:02,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 05:18:02,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:02,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 05:18:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-08-25 05:18:02,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:02,610 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) [2023-08-25 05:18:02,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:02,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:02,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:03,119 INFO L124 PetriNetUnfolderBase]: 805/1507 cut-off events. [2023-08-25 05:18:03,120 INFO L125 PetriNetUnfolderBase]: For 13217/13223 co-relation queries the response was YES. [2023-08-25 05:18:03,131 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. [2023-08-25 05:18:03,138 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 141 selfloop transitions, 146 changer transitions 4/295 dead transitions. [2023-08-25 05:18:03,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 295 transitions, 4075 flow [2023-08-25 05:18:03,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 05:18:03,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 05:18:03,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6817 transitions. [2023-08-25 05:18:03,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40611223638746574 [2023-08-25 05:18:03,148 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6817 transitions. [2023-08-25 05:18:03,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6817 transitions. [2023-08-25 05:18:03,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:03,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6817 transitions. [2023-08-25 05:18:03,157 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) [2023-08-25 05:18:03,168 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) [2023-08-25 05:18:03,170 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) [2023-08-25 05:18:03,170 INFO L175 Difference]: Start difference. First operand has 170 places, 209 transitions, 2735 flow. Second operand 22 states and 6817 transitions. [2023-08-25 05:18:03,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 295 transitions, 4075 flow [2023-08-25 05:18:03,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 295 transitions, 4005 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-25 05:18:03,289 INFO L231 Difference]: Finished difference. Result has 196 places, 236 transitions, 3404 flow [2023-08-25 05:18:03,289 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} [2023-08-25 05:18:03,293 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 138 predicate places. [2023-08-25 05:18:03,293 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 236 transitions, 3404 flow [2023-08-25 05:18:03,293 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) [2023-08-25 05:18:03,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:03,294 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] [2023-08-25 05:18:03,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:03,499 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 [2023-08-25 05:18:03,499 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:03,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:03,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1978786667, now seen corresponding path program 13 times [2023-08-25 05:18:03,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:03,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687513305] [2023-08-25 05:18:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:03,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:03,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:03,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687513305] [2023-08-25 05:18:03,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687513305] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:03,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928168710] [2023-08-25 05:18:03,572 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:18:03,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:03,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:03,573 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:03,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-25 05:18:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:03,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:03,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:03,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:03,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928168710] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:03,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:03,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-25 05:18:03,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951411784] [2023-08-25 05:18:03,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:03,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 05:18:03,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:03,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 05:18:03,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-25 05:18:03,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:03,791 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) [2023-08-25 05:18:03,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:03,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:03,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:04,208 INFO L124 PetriNetUnfolderBase]: 834/1607 cut-off events. [2023-08-25 05:18:04,208 INFO L125 PetriNetUnfolderBase]: For 17624/17624 co-relation queries the response was YES. [2023-08-25 05:18:04,220 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. [2023-08-25 05:18:04,228 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 200 selfloop transitions, 59 changer transitions 17/280 dead transitions. [2023-08-25 05:18:04,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 280 transitions, 4344 flow [2023-08-25 05:18:04,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 05:18:04,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 05:18:04,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2188 transitions. [2023-08-25 05:18:04,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40966111215128254 [2023-08-25 05:18:04,231 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2188 transitions. [2023-08-25 05:18:04,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2188 transitions. [2023-08-25 05:18:04,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:04,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2188 transitions. [2023-08-25 05:18:04,233 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) [2023-08-25 05:18:04,236 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) [2023-08-25 05:18:04,237 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) [2023-08-25 05:18:04,237 INFO L175 Difference]: Start difference. First operand has 196 places, 236 transitions, 3404 flow. Second operand 7 states and 2188 transitions. [2023-08-25 05:18:04,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 280 transitions, 4344 flow [2023-08-25 05:18:04,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 280 transitions, 4199 flow, removed 35 selfloop flow, removed 7 redundant places. [2023-08-25 05:18:04,330 INFO L231 Difference]: Finished difference. Result has 198 places, 236 transitions, 3396 flow [2023-08-25 05:18:04,330 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} [2023-08-25 05:18:04,332 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 140 predicate places. [2023-08-25 05:18:04,332 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 236 transitions, 3396 flow [2023-08-25 05:18:04,333 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) [2023-08-25 05:18:04,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:04,333 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] [2023-08-25 05:18:04,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:04,538 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 [2023-08-25 05:18:04,539 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:04,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:04,539 INFO L85 PathProgramCache]: Analyzing trace with hash -2110486909, now seen corresponding path program 14 times [2023-08-25 05:18:04,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:04,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845611817] [2023-08-25 05:18:04,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:04,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:04,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:04,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845611817] [2023-08-25 05:18:04,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845611817] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:04,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431099383] [2023-08-25 05:18:04,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:18:04,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:04,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:04,617 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:04,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-25 05:18:04,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:18:04,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:04,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:04,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:04,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:04,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:04,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431099383] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:04,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:04,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-25 05:18:04,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347229710] [2023-08-25 05:18:04,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:04,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 05:18:04,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:04,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 05:18:04,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-08-25 05:18:04,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:04,886 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) [2023-08-25 05:18:04,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:04,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:04,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:05,384 INFO L124 PetriNetUnfolderBase]: 822/1574 cut-off events. [2023-08-25 05:18:05,385 INFO L125 PetriNetUnfolderBase]: For 18154/18154 co-relation queries the response was YES. [2023-08-25 05:18:05,394 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. [2023-08-25 05:18:05,401 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 180 selfloop transitions, 79 changer transitions 15/278 dead transitions. [2023-08-25 05:18:05,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 278 transitions, 4288 flow [2023-08-25 05:18:05,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 05:18:05,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 05:18:05,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3417 transitions. [2023-08-25 05:18:05,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40712498510663647 [2023-08-25 05:18:05,406 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3417 transitions. [2023-08-25 05:18:05,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3417 transitions. [2023-08-25 05:18:05,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:05,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3417 transitions. [2023-08-25 05:18:05,411 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) [2023-08-25 05:18:05,417 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) [2023-08-25 05:18:05,418 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) [2023-08-25 05:18:05,418 INFO L175 Difference]: Start difference. First operand has 198 places, 236 transitions, 3396 flow. Second operand 11 states and 3417 transitions. [2023-08-25 05:18:05,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 278 transitions, 4288 flow [2023-08-25 05:18:05,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 278 transitions, 4159 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-25 05:18:05,514 INFO L231 Difference]: Finished difference. Result has 202 places, 231 transitions, 3342 flow [2023-08-25 05:18:05,514 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} [2023-08-25 05:18:05,515 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 144 predicate places. [2023-08-25 05:18:05,515 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 231 transitions, 3342 flow [2023-08-25 05:18:05,516 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) [2023-08-25 05:18:05,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:05,516 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] [2023-08-25 05:18:05,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:05,721 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 [2023-08-25 05:18:05,722 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:05,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:05,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1150344055, now seen corresponding path program 15 times [2023-08-25 05:18:05,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:05,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178380265] [2023-08-25 05:18:05,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:05,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:05,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:05,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:05,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178380265] [2023-08-25 05:18:05,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178380265] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:05,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818330787] [2023-08-25 05:18:05,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:18:05,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:05,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:05,825 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:05,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-25 05:18:05,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 05:18:05,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:06,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:06,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:06,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:06,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818330787] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:06,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:06,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-25 05:18:06,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905981599] [2023-08-25 05:18:06,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:06,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 05:18:06,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:06,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 05:18:06,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-25 05:18:06,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:06,134 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) [2023-08-25 05:18:06,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:06,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:06,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:06,950 INFO L124 PetriNetUnfolderBase]: 1040/1985 cut-off events. [2023-08-25 05:18:06,950 INFO L125 PetriNetUnfolderBase]: For 24587/24593 co-relation queries the response was YES. [2023-08-25 05:18:06,964 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. [2023-08-25 05:18:06,976 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 131 selfloop transitions, 219 changer transitions 4/358 dead transitions. [2023-08-25 05:18:06,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 358 transitions, 5423 flow [2023-08-25 05:18:06,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 05:18:06,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 05:18:06,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 8355 transitions. [2023-08-25 05:18:06,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055628367554973 [2023-08-25 05:18:06,984 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 8355 transitions. [2023-08-25 05:18:06,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 8355 transitions. [2023-08-25 05:18:06,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:06,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 8355 transitions. [2023-08-25 05:18:06,997 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) [2023-08-25 05:18:07,010 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) [2023-08-25 05:18:07,012 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) [2023-08-25 05:18:07,013 INFO L175 Difference]: Start difference. First operand has 202 places, 231 transitions, 3342 flow. Second operand 27 states and 8355 transitions. [2023-08-25 05:18:07,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 358 transitions, 5423 flow [2023-08-25 05:18:07,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 358 transitions, 5219 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-08-25 05:18:07,121 INFO L231 Difference]: Finished difference. Result has 233 places, 300 transitions, 4888 flow [2023-08-25 05:18:07,122 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} [2023-08-25 05:18:07,122 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 175 predicate places. [2023-08-25 05:18:07,122 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 300 transitions, 4888 flow [2023-08-25 05:18:07,123 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) [2023-08-25 05:18:07,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:07,123 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] [2023-08-25 05:18:07,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:07,331 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 [2023-08-25 05:18:07,331 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:07,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:07,332 INFO L85 PathProgramCache]: Analyzing trace with hash -477771567, now seen corresponding path program 16 times [2023-08-25 05:18:07,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:07,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738907416] [2023-08-25 05:18:07,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:07,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:07,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:07,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738907416] [2023-08-25 05:18:07,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738907416] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:07,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313786527] [2023-08-25 05:18:07,407 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:18:07,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:07,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:07,409 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:07,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-25 05:18:07,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:18:07,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:07,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:07,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:07,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 05:18:07,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313786527] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:07,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:07,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-25 05:18:07,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963710148] [2023-08-25 05:18:07,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:07,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 05:18:07,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:07,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 05:18:07,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-08-25 05:18:07,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:07,690 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) [2023-08-25 05:18:07,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:07,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:07,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:08,376 INFO L124 PetriNetUnfolderBase]: 1052/2009 cut-off events. [2023-08-25 05:18:08,376 INFO L125 PetriNetUnfolderBase]: For 34672/34672 co-relation queries the response was YES. [2023-08-25 05:18:08,390 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. [2023-08-25 05:18:08,401 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 211 selfloop transitions, 119 changer transitions 7/341 dead transitions. [2023-08-25 05:18:08,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 341 transitions, 5927 flow [2023-08-25 05:18:08,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 05:18:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 05:18:08,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4346 transitions. [2023-08-25 05:18:08,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40685264931660736 [2023-08-25 05:18:08,406 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4346 transitions. [2023-08-25 05:18:08,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4346 transitions. [2023-08-25 05:18:08,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:08,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4346 transitions. [2023-08-25 05:18:08,411 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) [2023-08-25 05:18:08,421 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) [2023-08-25 05:18:08,422 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) [2023-08-25 05:18:08,422 INFO L175 Difference]: Start difference. First operand has 233 places, 300 transitions, 4888 flow. Second operand 14 states and 4346 transitions. [2023-08-25 05:18:08,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 341 transitions, 5927 flow [2023-08-25 05:18:08,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 341 transitions, 5365 flow, removed 228 selfloop flow, removed 5 redundant places. [2023-08-25 05:18:08,593 INFO L231 Difference]: Finished difference. Result has 243 places, 304 transitions, 4684 flow [2023-08-25 05:18:08,593 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} [2023-08-25 05:18:08,594 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 185 predicate places. [2023-08-25 05:18:08,594 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 304 transitions, 4684 flow [2023-08-25 05:18:08,595 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) [2023-08-25 05:18:08,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:08,595 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] [2023-08-25 05:18:08,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:08,803 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 [2023-08-25 05:18:08,804 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:08,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:08,804 INFO L85 PathProgramCache]: Analyzing trace with hash 101168531, now seen corresponding path program 17 times [2023-08-25 05:18:08,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:08,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447444872] [2023-08-25 05:18:08,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:08,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:08,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:08,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447444872] [2023-08-25 05:18:08,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447444872] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:08,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177917675] [2023-08-25 05:18:08,877 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:18:08,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:08,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:08,879 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:08,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-25 05:18:09,031 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 05:18:09,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:09,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:09,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:09,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:09,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:09,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177917675] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:09,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:09,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-25 05:18:09,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632009805] [2023-08-25 05:18:09,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:09,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 05:18:09,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:09,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 05:18:09,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-08-25 05:18:09,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:09,152 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) [2023-08-25 05:18:09,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:09,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:09,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:09,925 INFO L124 PetriNetUnfolderBase]: 1143/2161 cut-off events. [2023-08-25 05:18:09,925 INFO L125 PetriNetUnfolderBase]: For 34140/34146 co-relation queries the response was YES. [2023-08-25 05:18:09,937 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. [2023-08-25 05:18:09,949 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 121 selfloop transitions, 264 changer transitions 3/392 dead transitions. [2023-08-25 05:18:09,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 392 transitions, 6483 flow [2023-08-25 05:18:09,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-25 05:18:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-25 05:18:09,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 7729 transitions. [2023-08-25 05:18:09,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4051900393184797 [2023-08-25 05:18:09,957 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 7729 transitions. [2023-08-25 05:18:09,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 7729 transitions. [2023-08-25 05:18:09,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:09,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 7729 transitions. [2023-08-25 05:18:09,966 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) [2023-08-25 05:18:09,978 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) [2023-08-25 05:18:09,980 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) [2023-08-25 05:18:09,980 INFO L175 Difference]: Start difference. First operand has 243 places, 304 transitions, 4684 flow. Second operand 25 states and 7729 transitions. [2023-08-25 05:18:09,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 392 transitions, 6483 flow [2023-08-25 05:18:10,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 392 transitions, 6259 flow, removed 18 selfloop flow, removed 11 redundant places. [2023-08-25 05:18:10,149 INFO L231 Difference]: Finished difference. Result has 265 places, 348 transitions, 6090 flow [2023-08-25 05:18:10,149 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} [2023-08-25 05:18:10,149 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 207 predicate places. [2023-08-25 05:18:10,150 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 348 transitions, 6090 flow [2023-08-25 05:18:10,150 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) [2023-08-25 05:18:10,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:10,150 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] [2023-08-25 05:18:10,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:10,351 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 [2023-08-25 05:18:10,351 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:10,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:10,351 INFO L85 PathProgramCache]: Analyzing trace with hash 113189101, now seen corresponding path program 18 times [2023-08-25 05:18:10,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:10,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658829363] [2023-08-25 05:18:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:10,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:10,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:10,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:10,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658829363] [2023-08-25 05:18:10,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658829363] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:10,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596267230] [2023-08-25 05:18:10,439 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:18:10,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:10,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:10,441 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:10,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-25 05:18:10,611 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 05:18:10,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:10,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:10,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:10,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 05:18:10,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596267230] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:10,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:10,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-25 05:18:10,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409121053] [2023-08-25 05:18:10,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:10,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 05:18:10,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:10,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 05:18:10,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-25 05:18:10,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:10,702 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) [2023-08-25 05:18:10,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:10,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:10,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:11,349 INFO L124 PetriNetUnfolderBase]: 1161/2204 cut-off events. [2023-08-25 05:18:11,349 INFO L125 PetriNetUnfolderBase]: For 41948/41954 co-relation queries the response was YES. [2023-08-25 05:18:11,369 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. [2023-08-25 05:18:11,381 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 231 selfloop transitions, 144 changer transitions 5/384 dead transitions. [2023-08-25 05:18:11,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 384 transitions, 7094 flow [2023-08-25 05:18:11,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 05:18:11,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 05:18:11,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4348 transitions. [2023-08-25 05:18:11,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4070398801722524 [2023-08-25 05:18:11,386 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4348 transitions. [2023-08-25 05:18:11,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4348 transitions. [2023-08-25 05:18:11,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:11,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4348 transitions. [2023-08-25 05:18:11,391 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) [2023-08-25 05:18:11,398 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) [2023-08-25 05:18:11,398 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) [2023-08-25 05:18:11,399 INFO L175 Difference]: Start difference. First operand has 265 places, 348 transitions, 6090 flow. Second operand 14 states and 4348 transitions. [2023-08-25 05:18:11,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 384 transitions, 7094 flow [2023-08-25 05:18:11,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 384 transitions, 6609 flow, removed 163 selfloop flow, removed 14 redundant places. [2023-08-25 05:18:11,614 INFO L231 Difference]: Finished difference. Result has 266 places, 350 transitions, 5939 flow [2023-08-25 05:18:11,614 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} [2023-08-25 05:18:11,615 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 208 predicate places. [2023-08-25 05:18:11,615 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 350 transitions, 5939 flow [2023-08-25 05:18:11,615 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) [2023-08-25 05:18:11,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:11,615 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] [2023-08-25 05:18:11,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-08-25 05:18:11,816 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 [2023-08-25 05:18:11,816 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:11,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:11,816 INFO L85 PathProgramCache]: Analyzing trace with hash -230290673, now seen corresponding path program 19 times [2023-08-25 05:18:11,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:11,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445283338] [2023-08-25 05:18:11,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:11,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:11,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:11,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445283338] [2023-08-25 05:18:11,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445283338] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:11,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985321418] [2023-08-25 05:18:11,891 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:18:11,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:11,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:11,893 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:11,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-25 05:18:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:12,048 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:12,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:12,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:12,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:12,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985321418] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:12,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:12,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-25 05:18:12,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505165157] [2023-08-25 05:18:12,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:12,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 05:18:12,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:12,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 05:18:12,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-25 05:18:12,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:12,152 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) [2023-08-25 05:18:12,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:12,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:12,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:12,842 INFO L124 PetriNetUnfolderBase]: 1226/2325 cut-off events. [2023-08-25 05:18:12,842 INFO L125 PetriNetUnfolderBase]: For 41385/41391 co-relation queries the response was YES. [2023-08-25 05:18:12,853 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. [2023-08-25 05:18:12,863 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 246 selfloop transitions, 158 changer transitions 13/421 dead transitions. [2023-08-25 05:18:12,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 421 transitions, 7395 flow [2023-08-25 05:18:12,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 05:18:12,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 05:18:12,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5277 transitions. [2023-08-25 05:18:12,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40683062215711974 [2023-08-25 05:18:12,868 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5277 transitions. [2023-08-25 05:18:12,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5277 transitions. [2023-08-25 05:18:12,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:12,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5277 transitions. [2023-08-25 05:18:12,874 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) [2023-08-25 05:18:12,881 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) [2023-08-25 05:18:12,882 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) [2023-08-25 05:18:12,882 INFO L175 Difference]: Start difference. First operand has 266 places, 350 transitions, 5939 flow. Second operand 17 states and 5277 transitions. [2023-08-25 05:18:12,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 421 transitions, 7395 flow [2023-08-25 05:18:13,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 421 transitions, 7035 flow, removed 7 selfloop flow, removed 12 redundant places. [2023-08-25 05:18:13,091 INFO L231 Difference]: Finished difference. Result has 272 places, 362 transitions, 6145 flow [2023-08-25 05:18:13,092 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} [2023-08-25 05:18:13,092 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 214 predicate places. [2023-08-25 05:18:13,092 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 362 transitions, 6145 flow [2023-08-25 05:18:13,093 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) [2023-08-25 05:18:13,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:13,093 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] [2023-08-25 05:18:13,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:13,293 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 [2023-08-25 05:18:13,293 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:13,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:13,294 INFO L85 PathProgramCache]: Analyzing trace with hash -871372235, now seen corresponding path program 20 times [2023-08-25 05:18:13,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:13,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063938305] [2023-08-25 05:18:13,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:13,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:13,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:13,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063938305] [2023-08-25 05:18:13,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063938305] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:13,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710611023] [2023-08-25 05:18:13,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:18:13,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:13,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:13,365 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:13,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-25 05:18:13,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:18:13,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:13,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:13,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:13,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:13,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:13,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:13,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710611023] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:13,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:13,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-25 05:18:13,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665250509] [2023-08-25 05:18:13,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:13,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 05:18:13,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:13,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 05:18:13,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-25 05:18:13,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:13,611 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) [2023-08-25 05:18:13,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:13,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:13,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:14,328 INFO L124 PetriNetUnfolderBase]: 1538/2875 cut-off events. [2023-08-25 05:18:14,328 INFO L125 PetriNetUnfolderBase]: For 49588/49600 co-relation queries the response was YES. [2023-08-25 05:18:14,346 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. [2023-08-25 05:18:14,359 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 153 selfloop transitions, 349 changer transitions 9/515 dead transitions. [2023-08-25 05:18:14,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 515 transitions, 9194 flow [2023-08-25 05:18:14,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 05:18:14,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 05:18:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4652 transitions. [2023-08-25 05:18:14,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064657055482744 [2023-08-25 05:18:14,369 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4652 transitions. [2023-08-25 05:18:14,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4652 transitions. [2023-08-25 05:18:14,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:14,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4652 transitions. [2023-08-25 05:18:14,373 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) [2023-08-25 05:18:14,380 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) [2023-08-25 05:18:14,381 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) [2023-08-25 05:18:14,381 INFO L175 Difference]: Start difference. First operand has 272 places, 362 transitions, 6145 flow. Second operand 15 states and 4652 transitions. [2023-08-25 05:18:14,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 515 transitions, 9194 flow [2023-08-25 05:18:14,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 515 transitions, 8821 flow, removed 51 selfloop flow, removed 11 redundant places. [2023-08-25 05:18:14,639 INFO L231 Difference]: Finished difference. Result has 279 places, 445 transitions, 8268 flow [2023-08-25 05:18:14,639 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} [2023-08-25 05:18:14,640 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 221 predicate places. [2023-08-25 05:18:14,640 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 445 transitions, 8268 flow [2023-08-25 05:18:14,640 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) [2023-08-25 05:18:14,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:14,641 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] [2023-08-25 05:18:14,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:14,846 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 [2023-08-25 05:18:14,846 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:14,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:14,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2087870483, now seen corresponding path program 21 times [2023-08-25 05:18:14,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:14,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812367749] [2023-08-25 05:18:14,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:14,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:14,943 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:14,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:14,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812367749] [2023-08-25 05:18:14,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812367749] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:14,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169732154] [2023-08-25 05:18:14,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:18:14,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:14,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:14,945 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:14,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-25 05:18:15,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 05:18:15,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:15,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:15,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:15,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:15,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169732154] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:15,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:15,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-25 05:18:15,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514889946] [2023-08-25 05:18:15,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:15,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 05:18:15,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:15,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 05:18:15,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-25 05:18:15,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:15,244 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) [2023-08-25 05:18:15,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:15,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:15,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:16,116 INFO L124 PetriNetUnfolderBase]: 1689/3212 cut-off events. [2023-08-25 05:18:16,116 INFO L125 PetriNetUnfolderBase]: For 60521/60521 co-relation queries the response was YES. [2023-08-25 05:18:16,135 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. [2023-08-25 05:18:16,148 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 168 selfloop transitions, 354 changer transitions 4/530 dead transitions. [2023-08-25 05:18:16,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 530 transitions, 10463 flow [2023-08-25 05:18:16,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 05:18:16,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 05:18:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4954 transitions. [2023-08-25 05:18:16,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4057994757536042 [2023-08-25 05:18:16,154 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4954 transitions. [2023-08-25 05:18:16,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4954 transitions. [2023-08-25 05:18:16,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:16,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4954 transitions. [2023-08-25 05:18:16,159 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) [2023-08-25 05:18:16,166 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) [2023-08-25 05:18:16,167 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) [2023-08-25 05:18:16,167 INFO L175 Difference]: Start difference. First operand has 279 places, 445 transitions, 8268 flow. Second operand 16 states and 4954 transitions. [2023-08-25 05:18:16,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 530 transitions, 10463 flow [2023-08-25 05:18:16,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 530 transitions, 10182 flow, removed 98 selfloop flow, removed 3 redundant places. [2023-08-25 05:18:16,516 INFO L231 Difference]: Finished difference. Result has 296 places, 483 transitions, 9802 flow [2023-08-25 05:18:16,516 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} [2023-08-25 05:18:16,517 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 238 predicate places. [2023-08-25 05:18:16,517 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 483 transitions, 9802 flow [2023-08-25 05:18:16,518 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) [2023-08-25 05:18:16,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:16,518 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] [2023-08-25 05:18:16,524 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-08-25 05:18:16,723 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 [2023-08-25 05:18:16,724 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:16,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:16,724 INFO L85 PathProgramCache]: Analyzing trace with hash -378711567, now seen corresponding path program 22 times [2023-08-25 05:18:16,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:16,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329337694] [2023-08-25 05:18:16,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:16,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:16,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:16,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:16,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329337694] [2023-08-25 05:18:16,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329337694] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:16,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721596437] [2023-08-25 05:18:16,796 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:18:16,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:16,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:16,798 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:16,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-25 05:18:16,936 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:18:16,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:16,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:16,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:16,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:17,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721596437] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:17,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:17,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-25 05:18:17,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605462595] [2023-08-25 05:18:17,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:17,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 05:18:17,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:17,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 05:18:17,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-08-25 05:18:17,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:17,030 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) [2023-08-25 05:18:17,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:17,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:17,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:18,069 INFO L124 PetriNetUnfolderBase]: 1782/3386 cut-off events. [2023-08-25 05:18:18,069 INFO L125 PetriNetUnfolderBase]: For 72666/72666 co-relation queries the response was YES. [2023-08-25 05:18:18,090 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. [2023-08-25 05:18:18,104 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 169 selfloop transitions, 378 changer transitions 5/556 dead transitions. [2023-08-25 05:18:18,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 556 transitions, 11850 flow [2023-08-25 05:18:18,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 05:18:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 05:18:18,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 6806 transitions. [2023-08-25 05:18:18,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054569283927082 [2023-08-25 05:18:18,111 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 6806 transitions. [2023-08-25 05:18:18,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 6806 transitions. [2023-08-25 05:18:18,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:18,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 6806 transitions. [2023-08-25 05:18:18,117 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) [2023-08-25 05:18:18,126 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) [2023-08-25 05:18:18,128 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) [2023-08-25 05:18:18,128 INFO L175 Difference]: Start difference. First operand has 296 places, 483 transitions, 9802 flow. Second operand 22 states and 6806 transitions. [2023-08-25 05:18:18,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 556 transitions, 11850 flow [2023-08-25 05:18:18,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 556 transitions, 11749 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-25 05:18:18,525 INFO L231 Difference]: Finished difference. Result has 316 places, 509 transitions, 11443 flow [2023-08-25 05:18:18,525 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} [2023-08-25 05:18:18,525 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 258 predicate places. [2023-08-25 05:18:18,525 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 509 transitions, 11443 flow [2023-08-25 05:18:18,526 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) [2023-08-25 05:18:18,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:18,526 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] [2023-08-25 05:18:18,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:18,726 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 [2023-08-25 05:18:18,727 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:18,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:18,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1355331211, now seen corresponding path program 23 times [2023-08-25 05:18:18,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:18,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601043094] [2023-08-25 05:18:18,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:18,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:18,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:18,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601043094] [2023-08-25 05:18:18,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601043094] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:18,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746043246] [2023-08-25 05:18:18,797 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:18:18,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:18,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:18,798 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:18,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-25 05:18:18,937 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 05:18:18,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:18,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:18,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:18,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:19,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746043246] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:19,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:19,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-25 05:18:19,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448106617] [2023-08-25 05:18:19,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:19,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 05:18:19,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:19,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 05:18:19,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-25 05:18:19,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:19,028 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) [2023-08-25 05:18:19,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:19,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:19,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:19,856 INFO L124 PetriNetUnfolderBase]: 1739/3304 cut-off events. [2023-08-25 05:18:19,856 INFO L125 PetriNetUnfolderBase]: For 85158/85164 co-relation queries the response was YES. [2023-08-25 05:18:19,879 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. [2023-08-25 05:18:19,895 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 312 selfloop transitions, 219 changer transitions 6/541 dead transitions. [2023-08-25 05:18:19,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 541 transitions, 12759 flow [2023-08-25 05:18:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 05:18:19,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 05:18:19,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4036 transitions. [2023-08-25 05:18:19,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068958564371408 [2023-08-25 05:18:19,900 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4036 transitions. [2023-08-25 05:18:19,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4036 transitions. [2023-08-25 05:18:19,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:19,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4036 transitions. [2023-08-25 05:18:19,904 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) [2023-08-25 05:18:19,910 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) [2023-08-25 05:18:19,911 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) [2023-08-25 05:18:19,911 INFO L175 Difference]: Start difference. First operand has 316 places, 509 transitions, 11443 flow. Second operand 13 states and 4036 transitions. [2023-08-25 05:18:19,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 541 transitions, 12759 flow [2023-08-25 05:18:20,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 541 transitions, 12506 flow, removed 12 selfloop flow, removed 19 redundant places. [2023-08-25 05:18:20,403 INFO L231 Difference]: Finished difference. Result has 308 places, 505 transitions, 11589 flow [2023-08-25 05:18:20,403 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} [2023-08-25 05:18:20,403 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 250 predicate places. [2023-08-25 05:18:20,404 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 505 transitions, 11589 flow [2023-08-25 05:18:20,404 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) [2023-08-25 05:18:20,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:20,404 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] [2023-08-25 05:18:20,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:20,605 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 [2023-08-25 05:18:20,605 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:20,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:20,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2094692786, now seen corresponding path program 24 times [2023-08-25 05:18:20,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:20,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445218812] [2023-08-25 05:18:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:20,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:20,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:20,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445218812] [2023-08-25 05:18:20,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445218812] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:20,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159133629] [2023-08-25 05:18:20,678 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:18:20,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:20,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:20,679 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:20,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-25 05:18:20,867 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 05:18:20,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:20,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:20,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:20,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:20,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:20,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:20,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159133629] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:20,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:20,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-25 05:18:20,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830955659] [2023-08-25 05:18:20,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:20,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 05:18:20,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:20,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 05:18:20,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-25 05:18:20,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:20,965 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) [2023-08-25 05:18:20,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:20,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:20,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:21,788 INFO L124 PetriNetUnfolderBase]: 1793/3401 cut-off events. [2023-08-25 05:18:21,788 INFO L125 PetriNetUnfolderBase]: For 88854/88860 co-relation queries the response was YES. [2023-08-25 05:18:21,811 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. [2023-08-25 05:18:21,827 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 443 selfloop transitions, 126 changer transitions 0/573 dead transitions. [2023-08-25 05:18:21,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 573 transitions, 13647 flow [2023-08-25 05:18:21,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 05:18:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 05:18:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3115 transitions. [2023-08-25 05:18:21,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40825688073394495 [2023-08-25 05:18:21,830 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3115 transitions. [2023-08-25 05:18:21,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3115 transitions. [2023-08-25 05:18:21,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:21,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3115 transitions. [2023-08-25 05:18:21,832 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) [2023-08-25 05:18:21,835 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) [2023-08-25 05:18:21,836 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) [2023-08-25 05:18:21,836 INFO L175 Difference]: Start difference. First operand has 308 places, 505 transitions, 11589 flow. Second operand 10 states and 3115 transitions. [2023-08-25 05:18:21,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 573 transitions, 13647 flow [2023-08-25 05:18:22,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 573 transitions, 13225 flow, removed 1 selfloop flow, removed 12 redundant places. [2023-08-25 05:18:22,317 INFO L231 Difference]: Finished difference. Result has 307 places, 518 transitions, 11822 flow [2023-08-25 05:18:22,317 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} [2023-08-25 05:18:22,318 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 249 predicate places. [2023-08-25 05:18:22,318 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 518 transitions, 11822 flow [2023-08-25 05:18:22,318 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) [2023-08-25 05:18:22,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:22,318 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] [2023-08-25 05:18:22,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:22,524 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 [2023-08-25 05:18:22,524 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:22,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:22,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1261684960, now seen corresponding path program 25 times [2023-08-25 05:18:22,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:22,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510513317] [2023-08-25 05:18:22,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:22,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:22,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:22,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510513317] [2023-08-25 05:18:22,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510513317] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:22,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784239882] [2023-08-25 05:18:22,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:18:22,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:22,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:22,604 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:22,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-25 05:18:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:22,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:22,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:22,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:22,828 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:22,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784239882] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:22,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:22,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-25 05:18:22,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454218201] [2023-08-25 05:18:22,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:22,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 05:18:22,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:22,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 05:18:22,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-25 05:18:22,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:22,838 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) [2023-08-25 05:18:22,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:22,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:22,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:23,822 INFO L124 PetriNetUnfolderBase]: 1969/3733 cut-off events. [2023-08-25 05:18:23,822 INFO L125 PetriNetUnfolderBase]: For 105815/105821 co-relation queries the response was YES. [2023-08-25 05:18:23,850 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. [2023-08-25 05:18:23,867 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 494 selfloop transitions, 114 changer transitions 0/612 dead transitions. [2023-08-25 05:18:23,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 612 transitions, 14667 flow [2023-08-25 05:18:23,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 05:18:23,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 05:18:23,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4346 transitions. [2023-08-25 05:18:23,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40685264931660736 [2023-08-25 05:18:23,870 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4346 transitions. [2023-08-25 05:18:23,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4346 transitions. [2023-08-25 05:18:23,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:23,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4346 transitions. [2023-08-25 05:18:23,874 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) [2023-08-25 05:18:23,880 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) [2023-08-25 05:18:23,881 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) [2023-08-25 05:18:23,881 INFO L175 Difference]: Start difference. First operand has 307 places, 518 transitions, 11822 flow. Second operand 14 states and 4346 transitions. [2023-08-25 05:18:23,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 612 transitions, 14667 flow [2023-08-25 05:18:24,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 612 transitions, 14316 flow, removed 100 selfloop flow, removed 4 redundant places. [2023-08-25 05:18:24,519 INFO L231 Difference]: Finished difference. Result has 326 places, 562 transitions, 12932 flow [2023-08-25 05:18:24,519 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} [2023-08-25 05:18:24,520 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 268 predicate places. [2023-08-25 05:18:24,520 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 562 transitions, 12932 flow [2023-08-25 05:18:24,521 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) [2023-08-25 05:18:24,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:24,521 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] [2023-08-25 05:18:24,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:24,725 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 [2023-08-25 05:18:24,725 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:24,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:24,725 INFO L85 PathProgramCache]: Analyzing trace with hash 796922220, now seen corresponding path program 26 times [2023-08-25 05:18:24,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:24,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290569654] [2023-08-25 05:18:24,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:24,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:24,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:24,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:24,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290569654] [2023-08-25 05:18:24,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290569654] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:24,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746767476] [2023-08-25 05:18:24,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:18:24,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:24,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:24,809 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:24,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-25 05:18:24,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:18:24,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:24,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:24,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:25,015 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:25,051 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:25,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746767476] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:25,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:25,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-25 05:18:25,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340147535] [2023-08-25 05:18:25,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:25,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 05:18:25,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:25,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 05:18:25,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-08-25 05:18:25,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:25,055 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) [2023-08-25 05:18:25,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:25,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:25,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:26,358 INFO L124 PetriNetUnfolderBase]: 2176/4107 cut-off events. [2023-08-25 05:18:26,358 INFO L125 PetriNetUnfolderBase]: For 119002/119013 co-relation queries the response was YES. [2023-08-25 05:18:26,387 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. [2023-08-25 05:18:26,407 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 474 selfloop transitions, 201 changer transitions 1/680 dead transitions. [2023-08-25 05:18:26,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 680 transitions, 16461 flow [2023-08-25 05:18:26,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 05:18:26,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 05:18:26,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6503 transitions. [2023-08-25 05:18:26,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4058540847531673 [2023-08-25 05:18:26,412 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6503 transitions. [2023-08-25 05:18:26,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6503 transitions. [2023-08-25 05:18:26,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:26,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6503 transitions. [2023-08-25 05:18:26,419 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) [2023-08-25 05:18:26,425 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) [2023-08-25 05:18:26,426 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) [2023-08-25 05:18:26,426 INFO L175 Difference]: Start difference. First operand has 326 places, 562 transitions, 12932 flow. Second operand 21 states and 6503 transitions. [2023-08-25 05:18:26,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 680 transitions, 16461 flow [2023-08-25 05:18:27,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 680 transitions, 16005 flow, removed 207 selfloop flow, removed 1 redundant places. [2023-08-25 05:18:27,076 INFO L231 Difference]: Finished difference. Result has 355 places, 629 transitions, 14808 flow [2023-08-25 05:18:27,076 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} [2023-08-25 05:18:27,076 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 297 predicate places. [2023-08-25 05:18:27,077 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 629 transitions, 14808 flow [2023-08-25 05:18:27,077 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) [2023-08-25 05:18:27,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:27,077 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] [2023-08-25 05:18:27,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-25 05:18:27,281 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 [2023-08-25 05:18:27,281 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:27,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:27,281 INFO L85 PathProgramCache]: Analyzing trace with hash -659689636, now seen corresponding path program 27 times [2023-08-25 05:18:27,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:27,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221235376] [2023-08-25 05:18:27,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:27,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:27,347 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:27,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:27,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221235376] [2023-08-25 05:18:27,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221235376] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:27,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547266566] [2023-08-25 05:18:27,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:18:27,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:27,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:27,349 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:27,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-25 05:18:27,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 05:18:27,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:27,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:27,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:27,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:27,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547266566] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:27,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:27,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-25 05:18:27,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936830053] [2023-08-25 05:18:27,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:27,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 05:18:27,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:27,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 05:18:27,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-25 05:18:27,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:27,600 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) [2023-08-25 05:18:27,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:27,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:27,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:28,769 INFO L124 PetriNetUnfolderBase]: 2178/4138 cut-off events. [2023-08-25 05:18:28,769 INFO L125 PetriNetUnfolderBase]: For 116456/116461 co-relation queries the response was YES. [2023-08-25 05:18:28,802 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. [2023-08-25 05:18:28,822 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 486 selfloop transitions, 176 changer transitions 3/669 dead transitions. [2023-08-25 05:18:28,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 669 transitions, 16738 flow [2023-08-25 05:18:28,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 05:18:28,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 05:18:28,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4338 transitions. [2023-08-25 05:18:28,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061037258940273 [2023-08-25 05:18:28,825 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4338 transitions. [2023-08-25 05:18:28,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4338 transitions. [2023-08-25 05:18:28,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:28,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4338 transitions. [2023-08-25 05:18:28,828 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) [2023-08-25 05:18:28,833 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) [2023-08-25 05:18:28,833 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) [2023-08-25 05:18:28,834 INFO L175 Difference]: Start difference. First operand has 355 places, 629 transitions, 14808 flow. Second operand 14 states and 4338 transitions. [2023-08-25 05:18:28,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 669 transitions, 16738 flow [2023-08-25 05:18:29,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 669 transitions, 16079 flow, removed 230 selfloop flow, removed 12 redundant places. [2023-08-25 05:18:29,670 INFO L231 Difference]: Finished difference. Result has 358 places, 629 transitions, 14522 flow [2023-08-25 05:18:29,671 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} [2023-08-25 05:18:29,671 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 300 predicate places. [2023-08-25 05:18:29,671 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 629 transitions, 14522 flow [2023-08-25 05:18:29,672 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) [2023-08-25 05:18:29,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:29,672 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] [2023-08-25 05:18:29,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:29,878 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 [2023-08-25 05:18:29,878 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:29,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:29,879 INFO L85 PathProgramCache]: Analyzing trace with hash -445963728, now seen corresponding path program 28 times [2023-08-25 05:18:29,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:29,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126447843] [2023-08-25 05:18:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:29,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:29,966 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:29,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:29,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126447843] [2023-08-25 05:18:29,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126447843] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:29,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865241266] [2023-08-25 05:18:29,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:18:29,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:29,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:29,968 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:29,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-25 05:18:30,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:18:30,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:30,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:30,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:30,217 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:30,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:30,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865241266] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:30,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:30,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-25 05:18:30,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680596954] [2023-08-25 05:18:30,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:30,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 05:18:30,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:30,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 05:18:30,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-25 05:18:30,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:30,281 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) [2023-08-25 05:18:30,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:30,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:30,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:31,789 INFO L124 PetriNetUnfolderBase]: 2705/5127 cut-off events. [2023-08-25 05:18:31,789 INFO L125 PetriNetUnfolderBase]: For 135080/135086 co-relation queries the response was YES. [2023-08-25 05:18:31,829 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. [2023-08-25 05:18:31,852 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 565 selfloop transitions, 274 changer transitions 0/843 dead transitions. [2023-08-25 05:18:31,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 843 transitions, 19874 flow [2023-08-25 05:18:31,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 05:18:31,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 05:18:31,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 8350 transitions. [2023-08-25 05:18:31,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053201300907723 [2023-08-25 05:18:31,857 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 8350 transitions. [2023-08-25 05:18:31,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 8350 transitions. [2023-08-25 05:18:31,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:31,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 8350 transitions. [2023-08-25 05:18:31,862 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) [2023-08-25 05:18:31,870 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) [2023-08-25 05:18:31,871 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) [2023-08-25 05:18:31,871 INFO L175 Difference]: Start difference. First operand has 358 places, 629 transitions, 14522 flow. Second operand 27 states and 8350 transitions. [2023-08-25 05:18:31,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 843 transitions, 19874 flow [2023-08-25 05:18:33,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 843 transitions, 19378 flow, removed 19 selfloop flow, removed 10 redundant places. [2023-08-25 05:18:33,057 INFO L231 Difference]: Finished difference. Result has 383 places, 776 transitions, 18005 flow [2023-08-25 05:18:33,058 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} [2023-08-25 05:18:33,058 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 325 predicate places. [2023-08-25 05:18:33,058 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 776 transitions, 18005 flow [2023-08-25 05:18:33,059 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) [2023-08-25 05:18:33,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:33,059 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] [2023-08-25 05:18:33,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:33,265 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 [2023-08-25 05:18:33,265 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:33,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:33,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1562221950, now seen corresponding path program 29 times [2023-08-25 05:18:33,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:33,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134082353] [2023-08-25 05:18:33,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:33,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:33,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:33,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134082353] [2023-08-25 05:18:33,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134082353] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:33,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941491919] [2023-08-25 05:18:33,352 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:18:33,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:33,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:33,353 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:33,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-25 05:18:33,524 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 05:18:33,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:33,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:33,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:33,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:33,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:33,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941491919] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:33,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:33,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-25 05:18:33,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570269035] [2023-08-25 05:18:33,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:33,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 05:18:33,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:33,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 05:18:33,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-08-25 05:18:33,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:33,646 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) [2023-08-25 05:18:33,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:33,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:33,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:35,545 INFO L124 PetriNetUnfolderBase]: 2867/5408 cut-off events. [2023-08-25 05:18:35,545 INFO L125 PetriNetUnfolderBase]: For 154211/154216 co-relation queries the response was YES. [2023-08-25 05:18:35,587 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. [2023-08-25 05:18:35,615 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 479 selfloop transitions, 377 changer transitions 0/860 dead transitions. [2023-08-25 05:18:35,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 860 transitions, 21235 flow [2023-08-25 05:18:35,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-25 05:18:35,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-25 05:18:35,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 6193 transitions. [2023-08-25 05:18:35,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40583224115334204 [2023-08-25 05:18:35,620 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 6193 transitions. [2023-08-25 05:18:35,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 6193 transitions. [2023-08-25 05:18:35,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:35,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 6193 transitions. [2023-08-25 05:18:35,626 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) [2023-08-25 05:18:35,633 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) [2023-08-25 05:18:35,634 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) [2023-08-25 05:18:35,634 INFO L175 Difference]: Start difference. First operand has 383 places, 776 transitions, 18005 flow. Second operand 20 states and 6193 transitions. [2023-08-25 05:18:35,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 860 transitions, 21235 flow [2023-08-25 05:18:36,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 860 transitions, 20964 flow, removed 80 selfloop flow, removed 9 redundant places. [2023-08-25 05:18:36,865 INFO L231 Difference]: Finished difference. Result has 400 places, 817 transitions, 20034 flow [2023-08-25 05:18:36,866 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} [2023-08-25 05:18:36,866 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 342 predicate places. [2023-08-25 05:18:36,866 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 817 transitions, 20034 flow [2023-08-25 05:18:36,867 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) [2023-08-25 05:18:36,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:36,867 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] [2023-08-25 05:18:36,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:37,072 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 [2023-08-25 05:18:37,073 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:37,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:37,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1297989452, now seen corresponding path program 30 times [2023-08-25 05:18:37,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:37,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302598083] [2023-08-25 05:18:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:37,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:37,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:37,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302598083] [2023-08-25 05:18:37,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302598083] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:37,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446542295] [2023-08-25 05:18:37,153 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:18:37,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:37,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:37,155 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:37,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-25 05:18:37,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 05:18:37,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:37,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:37,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:37,420 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 05:18:37,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446542295] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:37,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:37,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-25 05:18:37,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727953449] [2023-08-25 05:18:37,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:37,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 05:18:37,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:37,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 05:18:37,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-25 05:18:37,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:37,463 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) [2023-08-25 05:18:37,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:37,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:37,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:39,543 INFO L124 PetriNetUnfolderBase]: 2875/5469 cut-off events. [2023-08-25 05:18:39,543 INFO L125 PetriNetUnfolderBase]: For 163641/163646 co-relation queries the response was YES. [2023-08-25 05:18:39,583 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. [2023-08-25 05:18:39,607 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 528 selfloop transitions, 323 changer transitions 0/855 dead transitions. [2023-08-25 05:18:39,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 855 transitions, 22307 flow [2023-08-25 05:18:39,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 05:18:39,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 05:18:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4646 transitions. [2023-08-25 05:18:39,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4059414591524683 [2023-08-25 05:18:39,612 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4646 transitions. [2023-08-25 05:18:39,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4646 transitions. [2023-08-25 05:18:39,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:39,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4646 transitions. [2023-08-25 05:18:39,616 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) [2023-08-25 05:18:39,620 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) [2023-08-25 05:18:39,621 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) [2023-08-25 05:18:39,621 INFO L175 Difference]: Start difference. First operand has 400 places, 817 transitions, 20034 flow. Second operand 15 states and 4646 transitions. [2023-08-25 05:18:39,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 855 transitions, 22307 flow [2023-08-25 05:18:40,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 855 transitions, 21821 flow, removed 144 selfloop flow, removed 9 redundant places. [2023-08-25 05:18:40,933 INFO L231 Difference]: Finished difference. Result has 407 places, 819 transitions, 20280 flow [2023-08-25 05:18:40,934 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} [2023-08-25 05:18:40,934 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 349 predicate places. [2023-08-25 05:18:40,934 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 819 transitions, 20280 flow [2023-08-25 05:18:40,935 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) [2023-08-25 05:18:40,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:40,935 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] [2023-08-25 05:18:40,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:41,140 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 [2023-08-25 05:18:41,141 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:41,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:41,141 INFO L85 PathProgramCache]: Analyzing trace with hash 846928948, now seen corresponding path program 31 times [2023-08-25 05:18:41,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:41,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658308618] [2023-08-25 05:18:41,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:41,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:41,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:41,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658308618] [2023-08-25 05:18:41,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658308618] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:41,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113864591] [2023-08-25 05:18:41,204 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:18:41,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:41,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:41,205 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:41,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-25 05:18:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:41,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:41,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:41,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:41,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:41,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113864591] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:41,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:41,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-25 05:18:41,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821675892] [2023-08-25 05:18:41,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:41,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 05:18:41,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:41,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 05:18:41,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-25 05:18:41,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:41,430 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) [2023-08-25 05:18:41,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:41,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:41,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:43,460 INFO L124 PetriNetUnfolderBase]: 2994/5714 cut-off events. [2023-08-25 05:18:43,460 INFO L125 PetriNetUnfolderBase]: For 176088/176099 co-relation queries the response was YES. [2023-08-25 05:18:43,505 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. [2023-08-25 05:18:43,534 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 551 selfloop transitions, 330 changer transitions 13/898 dead transitions. [2023-08-25 05:18:43,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 898 transitions, 23637 flow [2023-08-25 05:18:43,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 05:18:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 05:18:43,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5260 transitions. [2023-08-25 05:18:43,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40552000616760464 [2023-08-25 05:18:43,538 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5260 transitions. [2023-08-25 05:18:43,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5260 transitions. [2023-08-25 05:18:43,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:43,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5260 transitions. [2023-08-25 05:18:43,542 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) [2023-08-25 05:18:43,547 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) [2023-08-25 05:18:43,547 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) [2023-08-25 05:18:43,548 INFO L175 Difference]: Start difference. First operand has 407 places, 819 transitions, 20280 flow. Second operand 17 states and 5260 transitions. [2023-08-25 05:18:43,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 898 transitions, 23637 flow [2023-08-25 05:18:44,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 898 transitions, 22979 flow, removed 32 selfloop flow, removed 10 redundant places. [2023-08-25 05:18:44,849 INFO L231 Difference]: Finished difference. Result has 418 places, 841 transitions, 21070 flow [2023-08-25 05:18:44,850 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} [2023-08-25 05:18:44,850 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 360 predicate places. [2023-08-25 05:18:44,850 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 841 transitions, 21070 flow [2023-08-25 05:18:44,851 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) [2023-08-25 05:18:44,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:44,851 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] [2023-08-25 05:18:44,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:45,056 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 [2023-08-25 05:18:45,057 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:45,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:45,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1789464308, now seen corresponding path program 32 times [2023-08-25 05:18:45,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:45,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357317070] [2023-08-25 05:18:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:45,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:45,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:45,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357317070] [2023-08-25 05:18:45,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357317070] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:45,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380271903] [2023-08-25 05:18:45,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:18:45,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:45,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:45,230 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:45,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-25 05:18:45,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:18:45,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:45,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:45,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:45,491 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:45,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 05:18:45,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380271903] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:45,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:45,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-25 05:18:45,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374035100] [2023-08-25 05:18:45,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:45,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 05:18:45,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:45,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 05:18:45,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-08-25 05:18:45,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:45,539 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) [2023-08-25 05:18:45,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:45,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:45,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:47,690 INFO L124 PetriNetUnfolderBase]: 3128/5883 cut-off events. [2023-08-25 05:18:47,691 INFO L125 PetriNetUnfolderBase]: For 198230/198242 co-relation queries the response was YES. [2023-08-25 05:18:47,738 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. [2023-08-25 05:18:47,766 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 790 selfloop transitions, 132 changer transitions 0/926 dead transitions. [2023-08-25 05:18:47,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 926 transitions, 24621 flow [2023-08-25 05:18:47,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 05:18:47,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 05:18:47,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4956 transitions. [2023-08-25 05:18:47,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4059633027522936 [2023-08-25 05:18:47,769 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4956 transitions. [2023-08-25 05:18:47,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4956 transitions. [2023-08-25 05:18:47,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:47,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4956 transitions. [2023-08-25 05:18:47,772 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) [2023-08-25 05:18:47,776 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) [2023-08-25 05:18:47,777 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) [2023-08-25 05:18:47,777 INFO L175 Difference]: Start difference. First operand has 418 places, 841 transitions, 21070 flow. Second operand 16 states and 4956 transitions. [2023-08-25 05:18:47,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 926 transitions, 24621 flow [2023-08-25 05:18:49,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 926 transitions, 24269 flow, removed 39 selfloop flow, removed 7 redundant places. [2023-08-25 05:18:49,271 INFO L231 Difference]: Finished difference. Result has 431 places, 886 transitions, 22442 flow [2023-08-25 05:18:49,272 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} [2023-08-25 05:18:49,272 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 373 predicate places. [2023-08-25 05:18:49,272 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 886 transitions, 22442 flow [2023-08-25 05:18:49,273 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) [2023-08-25 05:18:49,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:49,273 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] [2023-08-25 05:18:49,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:49,473 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 [2023-08-25 05:18:49,474 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:49,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:49,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1368032848, now seen corresponding path program 33 times [2023-08-25 05:18:49,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:49,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193807395] [2023-08-25 05:18:49,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:49,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:49,536 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:49,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:49,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193807395] [2023-08-25 05:18:49,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193807395] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:49,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202865200] [2023-08-25 05:18:49,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:18:49,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:49,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:49,537 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:49,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-25 05:18:49,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 05:18:49,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:49,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:49,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:49,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:49,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 05:18:49,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202865200] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:49,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:49,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-25 05:18:49,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631315138] [2023-08-25 05:18:49,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:49,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 05:18:49,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:49,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 05:18:49,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-08-25 05:18:49,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:49,790 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) [2023-08-25 05:18:49,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:49,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:49,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:52,055 INFO L124 PetriNetUnfolderBase]: 3130/5928 cut-off events. [2023-08-25 05:18:52,055 INFO L125 PetriNetUnfolderBase]: For 194706/194718 co-relation queries the response was YES. [2023-08-25 05:18:52,103 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. [2023-08-25 05:18:52,131 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 786 selfloop transitions, 122 changer transitions 0/912 dead transitions. [2023-08-25 05:18:52,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 912 transitions, 24628 flow [2023-08-25 05:18:52,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 05:18:52,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 05:18:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3412 transitions. [2023-08-25 05:18:52,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065292505659478 [2023-08-25 05:18:52,133 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3412 transitions. [2023-08-25 05:18:52,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3412 transitions. [2023-08-25 05:18:52,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:52,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3412 transitions. [2023-08-25 05:18:52,135 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) [2023-08-25 05:18:52,138 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) [2023-08-25 05:18:52,139 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) [2023-08-25 05:18:52,139 INFO L175 Difference]: Start difference. First operand has 431 places, 886 transitions, 22442 flow. Second operand 11 states and 3412 transitions. [2023-08-25 05:18:52,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 912 transitions, 24628 flow [2023-08-25 05:18:53,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 912 transitions, 24193 flow, removed 180 selfloop flow, removed 8 redundant places. [2023-08-25 05:18:53,654 INFO L231 Difference]: Finished difference. Result has 435 places, 882 transitions, 22183 flow [2023-08-25 05:18:53,655 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} [2023-08-25 05:18:53,655 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 377 predicate places. [2023-08-25 05:18:53,655 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 882 transitions, 22183 flow [2023-08-25 05:18:53,655 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) [2023-08-25 05:18:53,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:53,656 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] [2023-08-25 05:18:53,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:53,856 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 [2023-08-25 05:18:53,856 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:53,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:53,857 INFO L85 PathProgramCache]: Analyzing trace with hash -862630466, now seen corresponding path program 34 times [2023-08-25 05:18:53,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:53,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012956659] [2023-08-25 05:18:53,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:53,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:53,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:53,936 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:53,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:53,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012956659] [2023-08-25 05:18:53,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012956659] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:53,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262166892] [2023-08-25 05:18:53,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:18:53,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:53,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:53,938 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:18:53,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-25 05:18:54,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:18:54,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:54,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:54,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:54,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:54,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:54,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262166892] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:54,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:54,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-25 05:18:54,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750874548] [2023-08-25 05:18:54,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:54,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 05:18:54,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:54,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 05:18:54,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-08-25 05:18:54,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:54,213 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) [2023-08-25 05:18:54,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:54,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:54,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:18:56,464 INFO L124 PetriNetUnfolderBase]: 3224/6097 cut-off events. [2023-08-25 05:18:56,465 INFO L125 PetriNetUnfolderBase]: For 199776/199788 co-relation queries the response was YES. [2023-08-25 05:18:56,517 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. [2023-08-25 05:18:56,545 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 808 selfloop transitions, 126 changer transitions 13/951 dead transitions. [2023-08-25 05:18:56,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 951 transitions, 25370 flow [2023-08-25 05:18:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 05:18:56,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 05:18:56,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5257 transitions. [2023-08-25 05:18:56,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40528872099298435 [2023-08-25 05:18:56,548 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5257 transitions. [2023-08-25 05:18:56,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5257 transitions. [2023-08-25 05:18:56,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:18:56,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5257 transitions. [2023-08-25 05:18:56,552 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) [2023-08-25 05:18:56,557 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) [2023-08-25 05:18:56,558 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) [2023-08-25 05:18:56,558 INFO L175 Difference]: Start difference. First operand has 435 places, 882 transitions, 22183 flow. Second operand 17 states and 5257 transitions. [2023-08-25 05:18:56,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 951 transitions, 25370 flow [2023-08-25 05:18:58,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 951 transitions, 25029 flow, removed 29 selfloop flow, removed 8 redundant places. [2023-08-25 05:18:58,193 INFO L231 Difference]: Finished difference. Result has 447 places, 896 transitions, 22573 flow [2023-08-25 05:18:58,194 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} [2023-08-25 05:18:58,194 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 389 predicate places. [2023-08-25 05:18:58,194 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 896 transitions, 22573 flow [2023-08-25 05:18:58,195 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) [2023-08-25 05:18:58,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:18:58,195 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] [2023-08-25 05:18:58,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-25 05:18:58,400 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 [2023-08-25 05:18:58,401 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:18:58,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:18:58,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1359059486, now seen corresponding path program 35 times [2023-08-25 05:18:58,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:18:58,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919107046] [2023-08-25 05:18:58,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:18:58,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:18:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:18:58,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:58,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:18:58,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919107046] [2023-08-25 05:18:58,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919107046] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:18:58,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255528070] [2023-08-25 05:18:58,466 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:18:58,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:18:58,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:18:58,467 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) [2023-08-25 05:18:58,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-25 05:18:58,620 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 05:18:58,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:18:58,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:18:58,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:18:58,673 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:58,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:18:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:18:58,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255528070] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:18:58,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:18:58,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-25 05:18:58,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548067296] [2023-08-25 05:18:58,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:18:58,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 05:18:58,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:18:58,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 05:18:58,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-08-25 05:18:58,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:18:58,717 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) [2023-08-25 05:18:58,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:18:58,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:18:58,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:19:01,126 INFO L124 PetriNetUnfolderBase]: 3273/6174 cut-off events. [2023-08-25 05:19:01,126 INFO L125 PetriNetUnfolderBase]: For 208435/208441 co-relation queries the response was YES. [2023-08-25 05:19:01,180 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. [2023-08-25 05:19:01,210 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 657 selfloop transitions, 305 changer transitions 0/966 dead transitions. [2023-08-25 05:19:01,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 966 transitions, 25783 flow [2023-08-25 05:19:01,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 05:19:01,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 05:19:01,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5270 transitions. [2023-08-25 05:19:01,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40629095674967236 [2023-08-25 05:19:01,213 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5270 transitions. [2023-08-25 05:19:01,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5270 transitions. [2023-08-25 05:19:01,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:19:01,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5270 transitions. [2023-08-25 05:19:01,216 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) [2023-08-25 05:19:01,221 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) [2023-08-25 05:19:01,222 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) [2023-08-25 05:19:01,222 INFO L175 Difference]: Start difference. First operand has 447 places, 896 transitions, 22573 flow. Second operand 17 states and 5270 transitions. [2023-08-25 05:19:01,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 966 transitions, 25783 flow [2023-08-25 05:19:02,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 966 transitions, 25593 flow, removed 54 selfloop flow, removed 8 redundant places. [2023-08-25 05:19:02,759 INFO L231 Difference]: Finished difference. Result has 457 places, 920 transitions, 23951 flow [2023-08-25 05:19:02,759 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} [2023-08-25 05:19:02,760 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 399 predicate places. [2023-08-25 05:19:02,760 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 920 transitions, 23951 flow [2023-08-25 05:19:02,760 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) [2023-08-25 05:19:02,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:19:02,760 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] [2023-08-25 05:19:02,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-25 05:19:02,961 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 [2023-08-25 05:19:02,961 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:19:02,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:19:02,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1835399206, now seen corresponding path program 36 times [2023-08-25 05:19:02,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:19:02,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423394068] [2023-08-25 05:19:02,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:19:02,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:19:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:19:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:03,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:19:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423394068] [2023-08-25 05:19:03,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423394068] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:19:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208634963] [2023-08-25 05:19:03,034 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:19:03,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:19:03,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:19:03,035 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) [2023-08-25 05:19:03,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-25 05:19:03,239 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 05:19:03,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:19:03,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:19:03,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:19:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:03,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:19:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:03,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208634963] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:19:03,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:19:03,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-25 05:19:03,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965427294] [2023-08-25 05:19:03,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:19:03,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 05:19:03,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:19:03,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 05:19:03,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-08-25 05:19:03,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:19:03,327 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) [2023-08-25 05:19:03,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:19:03,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:19:03,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:19:05,818 INFO L124 PetriNetUnfolderBase]: 3286/6222 cut-off events. [2023-08-25 05:19:05,818 INFO L125 PetriNetUnfolderBase]: For 211023/211029 co-relation queries the response was YES. [2023-08-25 05:19:05,871 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. [2023-08-25 05:19:05,901 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 741 selfloop transitions, 205 changer transitions 8/958 dead transitions. [2023-08-25 05:19:05,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 958 transitions, 26458 flow [2023-08-25 05:19:05,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 05:19:05,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 05:19:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3720 transitions. [2023-08-25 05:19:05,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40629095674967236 [2023-08-25 05:19:05,903 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3720 transitions. [2023-08-25 05:19:05,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3720 transitions. [2023-08-25 05:19:05,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:19:05,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3720 transitions. [2023-08-25 05:19:05,906 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) [2023-08-25 05:19:05,910 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) [2023-08-25 05:19:05,910 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) [2023-08-25 05:19:05,910 INFO L175 Difference]: Start difference. First operand has 457 places, 920 transitions, 23951 flow. Second operand 12 states and 3720 transitions. [2023-08-25 05:19:05,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 958 transitions, 26458 flow [2023-08-25 05:19:07,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 958 transitions, 26054 flow, removed 174 selfloop flow, removed 5 redundant places. [2023-08-25 05:19:07,707 INFO L231 Difference]: Finished difference. Result has 466 places, 924 transitions, 24164 flow [2023-08-25 05:19:07,708 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} [2023-08-25 05:19:07,708 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 408 predicate places. [2023-08-25 05:19:07,708 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 924 transitions, 24164 flow [2023-08-25 05:19:07,709 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) [2023-08-25 05:19:07,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:19:07,709 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] [2023-08-25 05:19:07,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-08-25 05:19:07,909 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 [2023-08-25 05:19:07,910 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:19:07,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:19:07,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1870519294, now seen corresponding path program 37 times [2023-08-25 05:19:07,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:19:07,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699630310] [2023-08-25 05:19:07,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:19:07,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:19:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:19:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:07,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:19:07,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699630310] [2023-08-25 05:19:07,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699630310] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:19:07,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123190789] [2023-08-25 05:19:07,979 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:19:07,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:19:07,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:19:07,980 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) [2023-08-25 05:19:08,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-08-25 05:19:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:19:08,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:19:08,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:19:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:08,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:19:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:08,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123190789] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:19:08,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:19:08,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-25 05:19:08,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276512362] [2023-08-25 05:19:08,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:19:08,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 05:19:08,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:19:08,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 05:19:08,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-08-25 05:19:08,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:19:08,247 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) [2023-08-25 05:19:08,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:19:08,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:19:08,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:19:10,687 INFO L124 PetriNetUnfolderBase]: 3278/6209 cut-off events. [2023-08-25 05:19:10,688 INFO L125 PetriNetUnfolderBase]: For 208610/208622 co-relation queries the response was YES. [2023-08-25 05:19:10,885 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. [2023-08-25 05:19:10,914 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 658 selfloop transitions, 294 changer transitions 0/956 dead transitions. [2023-08-25 05:19:10,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 956 transitions, 26442 flow [2023-08-25 05:19:10,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 05:19:10,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 05:19:10,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3726 transitions. [2023-08-25 05:19:10,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069462647444299 [2023-08-25 05:19:10,917 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3726 transitions. [2023-08-25 05:19:10,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3726 transitions. [2023-08-25 05:19:10,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:19:10,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3726 transitions. [2023-08-25 05:19:10,919 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) [2023-08-25 05:19:10,923 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) [2023-08-25 05:19:10,923 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) [2023-08-25 05:19:10,923 INFO L175 Difference]: Start difference. First operand has 466 places, 924 transitions, 24164 flow. Second operand 12 states and 3726 transitions. [2023-08-25 05:19:10,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 956 transitions, 26442 flow [2023-08-25 05:19:12,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 956 transitions, 26022 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-08-25 05:19:12,557 INFO L231 Difference]: Finished difference. Result has 468 places, 920 transitions, 24196 flow [2023-08-25 05:19:12,558 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} [2023-08-25 05:19:12,558 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 410 predicate places. [2023-08-25 05:19:12,558 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 920 transitions, 24196 flow [2023-08-25 05:19:12,559 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) [2023-08-25 05:19:12,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:19:12,559 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] [2023-08-25 05:19:12,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-08-25 05:19:12,759 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 [2023-08-25 05:19:12,759 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:19:12,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:19:12,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1306354982, now seen corresponding path program 38 times [2023-08-25 05:19:12,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:19:12,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304127985] [2023-08-25 05:19:12,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:19:12,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:19:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:19:12,815 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:12,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:19:12,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304127985] [2023-08-25 05:19:12,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304127985] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:19:12,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953378297] [2023-08-25 05:19:12,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:19:12,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:19:12,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:19:12,817 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) [2023-08-25 05:19:12,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-08-25 05:19:12,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:19:12,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:19:12,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 05:19:12,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:19:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:13,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:19:13,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:13,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953378297] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:19:13,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:19:13,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-25 05:19:13,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450112224] [2023-08-25 05:19:13,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:19:13,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 05:19:13,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:19:13,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 05:19:13,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-25 05:19:13,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:19:13,035 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) [2023-08-25 05:19:13,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:19:13,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:19:13,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:19:15,325 INFO L124 PetriNetUnfolderBase]: 3240/6125 cut-off events. [2023-08-25 05:19:15,325 INFO L125 PetriNetUnfolderBase]: For 208808/208820 co-relation queries the response was YES. [2023-08-25 05:19:15,379 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. [2023-08-25 05:19:15,407 INFO L140 encePairwiseOnDemand]: 757/763 looper letters, 719 selfloop transitions, 187 changer transitions 15/925 dead transitions. [2023-08-25 05:19:15,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 925 transitions, 25825 flow [2023-08-25 05:19:15,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 05:19:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 05:19:15,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2177 transitions. [2023-08-25 05:19:15,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076015727391874 [2023-08-25 05:19:15,409 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2177 transitions. [2023-08-25 05:19:15,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2177 transitions. [2023-08-25 05:19:15,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:19:15,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2177 transitions. [2023-08-25 05:19:15,410 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) [2023-08-25 05:19:15,412 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) [2023-08-25 05:19:15,412 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) [2023-08-25 05:19:15,412 INFO L175 Difference]: Start difference. First operand has 468 places, 920 transitions, 24196 flow. Second operand 7 states and 2177 transitions. [2023-08-25 05:19:15,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 925 transitions, 25825 flow [2023-08-25 05:19:17,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 925 transitions, 25197 flow, removed 25 selfloop flow, removed 12 redundant places. [2023-08-25 05:19:17,152 INFO L231 Difference]: Finished difference. Result has 459 places, 901 transitions, 23320 flow [2023-08-25 05:19:17,153 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} [2023-08-25 05:19:17,153 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 401 predicate places. [2023-08-25 05:19:17,154 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 901 transitions, 23320 flow [2023-08-25 05:19:17,154 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) [2023-08-25 05:19:17,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:19:17,154 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] [2023-08-25 05:19:17,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-08-25 05:19:17,354 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 [2023-08-25 05:19:17,355 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:19:17,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:19:17,355 INFO L85 PathProgramCache]: Analyzing trace with hash 730584364, now seen corresponding path program 39 times [2023-08-25 05:19:17,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:19:17,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285097997] [2023-08-25 05:19:17,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:19:17,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:19:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:19:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:17,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:19:17,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285097997] [2023-08-25 05:19:17,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285097997] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:19:17,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719606811] [2023-08-25 05:19:17,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:19:17,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:19:17,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:19:17,865 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) [2023-08-25 05:19:17,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-08-25 05:19:18,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 05:19:18,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:19:18,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:19:18,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:19:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:18,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:19:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:18,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719606811] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:19:18,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:19:18,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-08-25 05:19:18,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012699413] [2023-08-25 05:19:18,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:19:18,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 05:19:18,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:19:18,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 05:19:18,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2023-08-25 05:19:18,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:19:18,727 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) [2023-08-25 05:19:18,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:19:18,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:19:18,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:19:22,090 INFO L124 PetriNetUnfolderBase]: 3953/7554 cut-off events. [2023-08-25 05:19:22,090 INFO L125 PetriNetUnfolderBase]: For 260385/260397 co-relation queries the response was YES. [2023-08-25 05:19:22,160 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. [2023-08-25 05:19:22,200 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 900 selfloop transitions, 247 changer transitions 15/1179 dead transitions. [2023-08-25 05:19:22,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 1179 transitions, 31762 flow [2023-08-25 05:19:22,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 05:19:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 05:19:22,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4178 transitions. [2023-08-25 05:19:22,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911252574424265 [2023-08-25 05:19:22,204 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4178 transitions. [2023-08-25 05:19:22,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4178 transitions. [2023-08-25 05:19:22,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:19:22,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4178 transitions. [2023-08-25 05:19:22,207 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) [2023-08-25 05:19:22,212 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) [2023-08-25 05:19:22,212 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) [2023-08-25 05:19:22,212 INFO L175 Difference]: Start difference. First operand has 459 places, 901 transitions, 23320 flow. Second operand 14 states and 4178 transitions. [2023-08-25 05:19:22,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 1179 transitions, 31762 flow [2023-08-25 05:19:24,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 1179 transitions, 31064 flow, removed 11 selfloop flow, removed 11 redundant places. [2023-08-25 05:19:24,472 INFO L231 Difference]: Finished difference. Result has 466 places, 1047 transitions, 27558 flow [2023-08-25 05:19:24,473 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} [2023-08-25 05:19:24,474 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 408 predicate places. [2023-08-25 05:19:24,474 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 1047 transitions, 27558 flow [2023-08-25 05:19:24,474 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) [2023-08-25 05:19:24,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:19:24,475 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] [2023-08-25 05:19:24,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2023-08-25 05:19:24,675 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 [2023-08-25 05:19:24,675 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:19:24,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:19:24,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1854668294, now seen corresponding path program 40 times [2023-08-25 05:19:24,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:19:24,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989059291] [2023-08-25 05:19:24,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:19:24,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:19:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:19:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:25,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:19:25,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989059291] [2023-08-25 05:19:25,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989059291] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:19:25,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293780563] [2023-08-25 05:19:25,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:19:25,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:19:25,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:19:25,213 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) [2023-08-25 05:19:25,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-08-25 05:19:25,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:19:25,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:19:25,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:19:25,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:19:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:25,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:19:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:25,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293780563] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:19:25,900 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:19:25,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-25 05:19:25,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935942029] [2023-08-25 05:19:25,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:19:25,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 05:19:25,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:19:25,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 05:19:25,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-08-25 05:19:25,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:19:25,905 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) [2023-08-25 05:19:25,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:19:25,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:19:25,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:19:29,558 INFO L124 PetriNetUnfolderBase]: 3983/7630 cut-off events. [2023-08-25 05:19:29,558 INFO L125 PetriNetUnfolderBase]: For 276399/276408 co-relation queries the response was YES. [2023-08-25 05:19:29,638 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. [2023-08-25 05:19:29,676 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 921 selfloop transitions, 222 changer transitions 17/1177 dead transitions. [2023-08-25 05:19:29,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1177 transitions, 32042 flow [2023-08-25 05:19:29,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 05:19:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 05:19:29,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4454 transitions. [2023-08-25 05:19:29,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891655744866754 [2023-08-25 05:19:29,679 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4454 transitions. [2023-08-25 05:19:29,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4454 transitions. [2023-08-25 05:19:29,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:19:29,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4454 transitions. [2023-08-25 05:19:29,682 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) [2023-08-25 05:19:29,686 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) [2023-08-25 05:19:29,687 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) [2023-08-25 05:19:29,687 INFO L175 Difference]: Start difference. First operand has 466 places, 1047 transitions, 27558 flow. Second operand 15 states and 4454 transitions. [2023-08-25 05:19:29,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1177 transitions, 32042 flow [2023-08-25 05:19:32,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1177 transitions, 31698 flow, removed 172 selfloop flow, removed 2 redundant places. [2023-08-25 05:19:32,213 INFO L231 Difference]: Finished difference. Result has 481 places, 1083 transitions, 28568 flow [2023-08-25 05:19:32,214 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} [2023-08-25 05:19:32,214 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 423 predicate places. [2023-08-25 05:19:32,214 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 1083 transitions, 28568 flow [2023-08-25 05:19:32,215 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) [2023-08-25 05:19:32,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:19:32,215 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] [2023-08-25 05:19:32,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-08-25 05:19:32,415 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 [2023-08-25 05:19:32,416 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:19:32,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:19:32,416 INFO L85 PathProgramCache]: Analyzing trace with hash -151335262, now seen corresponding path program 41 times [2023-08-25 05:19:32,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:19:32,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10131846] [2023-08-25 05:19:32,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:19:32,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:19:32,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:19:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:32,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:19:32,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10131846] [2023-08-25 05:19:32,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10131846] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:19:32,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729472329] [2023-08-25 05:19:32,911 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:19:32,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:19:32,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:19:32,913 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) [2023-08-25 05:19:32,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-08-25 05:19:33,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 05:19:33,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:19:33,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:19:33,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:19:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:33,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:19:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:33,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729472329] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:19:33,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:19:33,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-08-25 05:19:33,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596205782] [2023-08-25 05:19:33,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:19:33,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 05:19:33,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:19:33,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 05:19:33,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-08-25 05:19:33,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:19:33,654 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) [2023-08-25 05:19:33,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:19:33,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:19:33,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:19:37,171 INFO L124 PetriNetUnfolderBase]: 3966/7593 cut-off events. [2023-08-25 05:19:37,171 INFO L125 PetriNetUnfolderBase]: For 279647/279664 co-relation queries the response was YES. [2023-08-25 05:19:37,246 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. [2023-08-25 05:19:37,287 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 899 selfloop transitions, 280 changer transitions 10/1206 dead transitions. [2023-08-25 05:19:37,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 1206 transitions, 33235 flow [2023-08-25 05:19:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 05:19:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 05:19:37,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4166 transitions. [2023-08-25 05:19:37,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39000187230855643 [2023-08-25 05:19:37,290 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4166 transitions. [2023-08-25 05:19:37,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4166 transitions. [2023-08-25 05:19:37,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:19:37,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4166 transitions. [2023-08-25 05:19:37,294 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) [2023-08-25 05:19:37,298 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) [2023-08-25 05:19:37,299 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) [2023-08-25 05:19:37,299 INFO L175 Difference]: Start difference. First operand has 481 places, 1083 transitions, 28568 flow. Second operand 14 states and 4166 transitions. [2023-08-25 05:19:37,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 1206 transitions, 33235 flow [2023-08-25 05:19:40,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 1206 transitions, 32894 flow, removed 39 selfloop flow, removed 8 redundant places. [2023-08-25 05:19:40,057 INFO L231 Difference]: Finished difference. Result has 487 places, 1094 transitions, 29188 flow [2023-08-25 05:19:40,058 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} [2023-08-25 05:19:40,058 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 429 predicate places. [2023-08-25 05:19:40,058 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 1094 transitions, 29188 flow [2023-08-25 05:19:40,059 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) [2023-08-25 05:19:40,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:19:40,059 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] [2023-08-25 05:19:40,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-08-25 05:19:40,259 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 [2023-08-25 05:19:40,260 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:19:40,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:19:40,260 INFO L85 PathProgramCache]: Analyzing trace with hash 493551510, now seen corresponding path program 42 times [2023-08-25 05:19:40,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:19:40,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142227791] [2023-08-25 05:19:40,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:19:40,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:19:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:19:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:40,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:19:40,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142227791] [2023-08-25 05:19:40,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142227791] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:19:40,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224274919] [2023-08-25 05:19:40,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:19:40,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:19:40,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:19:40,697 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) [2023-08-25 05:19:40,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-08-25 05:19:40,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 05:19:40,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:19:40,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:19:40,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:19:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:41,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:19:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:41,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224274919] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:19:41,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:19:41,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-08-25 05:19:41,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145078876] [2023-08-25 05:19:41,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:19:41,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 05:19:41,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:19:41,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 05:19:41,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2023-08-25 05:19:41,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:19:41,353 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) [2023-08-25 05:19:41,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:19:41,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:19:41,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:19:44,777 INFO L124 PetriNetUnfolderBase]: 3963/7580 cut-off events. [2023-08-25 05:19:44,777 INFO L125 PetriNetUnfolderBase]: For 282501/282514 co-relation queries the response was YES. [2023-08-25 05:19:45,008 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. [2023-08-25 05:19:45,043 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 878 selfloop transitions, 295 changer transitions 25/1215 dead transitions. [2023-08-25 05:19:45,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 1215 transitions, 33992 flow [2023-08-25 05:19:45,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 05:19:45,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 05:19:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4459 transitions. [2023-08-25 05:19:45,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38960244648318043 [2023-08-25 05:19:45,046 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4459 transitions. [2023-08-25 05:19:45,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4459 transitions. [2023-08-25 05:19:45,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:19:45,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4459 transitions. [2023-08-25 05:19:45,049 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) [2023-08-25 05:19:45,054 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) [2023-08-25 05:19:45,054 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) [2023-08-25 05:19:45,054 INFO L175 Difference]: Start difference. First operand has 487 places, 1094 transitions, 29188 flow. Second operand 15 states and 4459 transitions. [2023-08-25 05:19:45,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 1215 transitions, 33992 flow [2023-08-25 05:19:47,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 1215 transitions, 33406 flow, removed 15 selfloop flow, removed 11 redundant places. [2023-08-25 05:19:47,632 INFO L231 Difference]: Finished difference. Result has 496 places, 1095 transitions, 29464 flow [2023-08-25 05:19:47,634 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} [2023-08-25 05:19:47,634 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 438 predicate places. [2023-08-25 05:19:47,634 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 1095 transitions, 29464 flow [2023-08-25 05:19:47,635 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) [2023-08-25 05:19:47,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:19:47,635 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] [2023-08-25 05:19:47,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-08-25 05:19:47,841 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 [2023-08-25 05:19:47,841 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:19:47,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:19:47,841 INFO L85 PathProgramCache]: Analyzing trace with hash 594660152, now seen corresponding path program 43 times [2023-08-25 05:19:47,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:19:47,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176002146] [2023-08-25 05:19:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:19:47,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:19:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:19:48,330 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:48,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:19:48,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176002146] [2023-08-25 05:19:48,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176002146] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:19:48,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381538726] [2023-08-25 05:19:48,330 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:19:48,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:19:48,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:19:48,331 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) [2023-08-25 05:19:48,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-08-25 05:19:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:19:48,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:19:48,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:19:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:48,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:19:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:48,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381538726] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:19:48,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:19:48,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-25 05:19:48,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422456035] [2023-08-25 05:19:48,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:19:48,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 05:19:48,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:19:48,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 05:19:48,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-08-25 05:19:48,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:19:48,966 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) [2023-08-25 05:19:48,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:19:48,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:19:48,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:19:52,721 INFO L124 PetriNetUnfolderBase]: 4107/7849 cut-off events. [2023-08-25 05:19:52,721 INFO L125 PetriNetUnfolderBase]: For 313537/313550 co-relation queries the response was YES. [2023-08-25 05:19:52,793 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. [2023-08-25 05:19:52,829 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 948 selfloop transitions, 287 changer transitions 13/1265 dead transitions. [2023-08-25 05:19:52,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 1265 transitions, 35557 flow [2023-08-25 05:19:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 05:19:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 05:19:52,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5344 transitions. [2023-08-25 05:19:52,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891073248871414 [2023-08-25 05:19:52,832 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5344 transitions. [2023-08-25 05:19:52,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5344 transitions. [2023-08-25 05:19:52,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:19:52,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5344 transitions. [2023-08-25 05:19:52,836 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) [2023-08-25 05:19:52,841 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) [2023-08-25 05:19:52,842 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) [2023-08-25 05:19:52,842 INFO L175 Difference]: Start difference. First operand has 496 places, 1095 transitions, 29464 flow. Second operand 18 states and 5344 transitions. [2023-08-25 05:19:52,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 1265 transitions, 35557 flow [2023-08-25 05:19:55,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 1265 transitions, 35000 flow, removed 51 selfloop flow, removed 9 redundant places. [2023-08-25 05:19:56,013 INFO L231 Difference]: Finished difference. Result has 508 places, 1137 transitions, 31005 flow [2023-08-25 05:19:56,014 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} [2023-08-25 05:19:56,015 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 450 predicate places. [2023-08-25 05:19:56,015 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 1137 transitions, 31005 flow [2023-08-25 05:19:56,016 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) [2023-08-25 05:19:56,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:19:56,016 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] [2023-08-25 05:19:56,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-08-25 05:19:56,221 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 [2023-08-25 05:19:56,222 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:19:56,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:19:56,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1317991972, now seen corresponding path program 44 times [2023-08-25 05:19:56,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:19:56,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201316416] [2023-08-25 05:19:56,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:19:56,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:19:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:19:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:56,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:19:56,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201316416] [2023-08-25 05:19:56,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201316416] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:19:56,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205725022] [2023-08-25 05:19:56,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:19:56,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:19:56,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:19:56,684 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) [2023-08-25 05:19:56,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-08-25 05:19:56,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:19:56,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:19:56,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:19:56,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:19:57,053 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:57,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:19:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:19:57,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205725022] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:19:57,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:19:57,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-25 05:19:57,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764222424] [2023-08-25 05:19:57,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:19:57,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 05:19:57,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:19:57,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 05:19:57,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-08-25 05:19:57,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:19:57,405 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) [2023-08-25 05:19:57,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:19:57,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:19:57,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:20:01,121 INFO L124 PetriNetUnfolderBase]: 4106/7840 cut-off events. [2023-08-25 05:20:01,121 INFO L125 PetriNetUnfolderBase]: For 330323/330340 co-relation queries the response was YES. [2023-08-25 05:20:01,214 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. [2023-08-25 05:20:01,257 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 943 selfloop transitions, 285 changer transitions 15/1260 dead transitions. [2023-08-25 05:20:01,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 1260 transitions, 35922 flow [2023-08-25 05:20:01,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 05:20:01,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 05:20:01,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4467 transitions. [2023-08-25 05:20:01,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39030144167758846 [2023-08-25 05:20:01,260 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4467 transitions. [2023-08-25 05:20:01,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4467 transitions. [2023-08-25 05:20:01,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:20:01,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4467 transitions. [2023-08-25 05:20:01,263 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) [2023-08-25 05:20:01,268 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) [2023-08-25 05:20:01,269 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) [2023-08-25 05:20:01,269 INFO L175 Difference]: Start difference. First operand has 508 places, 1137 transitions, 31005 flow. Second operand 15 states and 4467 transitions. [2023-08-25 05:20:01,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 1260 transitions, 35922 flow [2023-08-25 05:20:04,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 1260 transitions, 35407 flow, removed 136 selfloop flow, removed 7 redundant places. [2023-08-25 05:20:04,836 INFO L231 Difference]: Finished difference. Result has 517 places, 1140 transitions, 31208 flow [2023-08-25 05:20:04,837 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} [2023-08-25 05:20:04,837 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 459 predicate places. [2023-08-25 05:20:04,837 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 1140 transitions, 31208 flow [2023-08-25 05:20:04,838 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) [2023-08-25 05:20:04,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:20:04,838 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] [2023-08-25 05:20:04,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2023-08-25 05:20:05,039 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 [2023-08-25 05:20:05,039 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:20:05,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:20:05,040 INFO L85 PathProgramCache]: Analyzing trace with hash 393953486, now seen corresponding path program 45 times [2023-08-25 05:20:05,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:20:05,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988131032] [2023-08-25 05:20:05,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:20:05,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:20:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:20:05,533 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:05,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:20:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988131032] [2023-08-25 05:20:05,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988131032] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:20:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443394746] [2023-08-25 05:20:05,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:20:05,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:20:05,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:20:05,537 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) [2023-08-25 05:20:05,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-08-25 05:20:05,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 05:20:05,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:20:05,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:20:05,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:20:05,946 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:05,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:20:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:06,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443394746] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:20:06,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:20:06,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-25 05:20:06,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011563004] [2023-08-25 05:20:06,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:20:06,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:20:06,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:20:06,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:20:06,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:20:06,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:20:06,189 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) [2023-08-25 05:20:06,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:20:06,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:20:06,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:20:09,963 INFO L124 PetriNetUnfolderBase]: 4103/7831 cut-off events. [2023-08-25 05:20:09,963 INFO L125 PetriNetUnfolderBase]: For 313156/313173 co-relation queries the response was YES. [2023-08-25 05:20:10,046 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. [2023-08-25 05:20:10,084 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 953 selfloop transitions, 274 changer transitions 17/1261 dead transitions. [2023-08-25 05:20:10,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 1261 transitions, 36128 flow [2023-08-25 05:20:10,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 05:20:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 05:20:10,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5038 transitions. [2023-08-25 05:20:10,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884049032457019 [2023-08-25 05:20:10,087 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5038 transitions. [2023-08-25 05:20:10,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5038 transitions. [2023-08-25 05:20:10,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:20:10,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5038 transitions. [2023-08-25 05:20:10,091 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) [2023-08-25 05:20:10,096 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) [2023-08-25 05:20:10,096 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) [2023-08-25 05:20:10,097 INFO L175 Difference]: Start difference. First operand has 517 places, 1140 transitions, 31208 flow. Second operand 17 states and 5038 transitions. [2023-08-25 05:20:10,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 1261 transitions, 36128 flow [2023-08-25 05:20:13,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 1261 transitions, 35523 flow, removed 25 selfloop flow, removed 12 redundant places. [2023-08-25 05:20:13,331 INFO L231 Difference]: Finished difference. Result has 525 places, 1148 transitions, 31533 flow [2023-08-25 05:20:13,332 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} [2023-08-25 05:20:13,333 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 467 predicate places. [2023-08-25 05:20:13,333 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 1148 transitions, 31533 flow [2023-08-25 05:20:13,333 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) [2023-08-25 05:20:13,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:20:13,333 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] [2023-08-25 05:20:13,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-08-25 05:20:13,534 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 [2023-08-25 05:20:13,534 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:20:13,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:20:13,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1501217536, now seen corresponding path program 46 times [2023-08-25 05:20:13,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:20:13,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075877456] [2023-08-25 05:20:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:20:13,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:20:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:20:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:13,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:20:13,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075877456] [2023-08-25 05:20:13,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075877456] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:20:13,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039513209] [2023-08-25 05:20:13,933 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:20:13,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:20:13,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:20:13,935 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) [2023-08-25 05:20:13,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-08-25 05:20:14,104 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:20:14,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:20:14,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:20:14,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:20:14,271 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:14,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:20:14,542 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:14,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039513209] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:20:14,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:20:14,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 23 [2023-08-25 05:20:14,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103610369] [2023-08-25 05:20:14,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:20:14,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 05:20:14,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:20:14,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 05:20:14,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2023-08-25 05:20:14,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:20:14,548 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) [2023-08-25 05:20:14,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:20:14,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:20:14,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:20:19,185 INFO L124 PetriNetUnfolderBase]: 4667/8888 cut-off events. [2023-08-25 05:20:19,185 INFO L125 PetriNetUnfolderBase]: For 382462/382479 co-relation queries the response was YES. [2023-08-25 05:20:19,279 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. [2023-08-25 05:20:19,323 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1112 selfloop transitions, 245 changer transitions 14/1388 dead transitions. [2023-08-25 05:20:19,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 1388 transitions, 40443 flow [2023-08-25 05:20:19,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 05:20:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 05:20:19,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4162 transitions. [2023-08-25 05:20:19,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896274105972664 [2023-08-25 05:20:19,328 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4162 transitions. [2023-08-25 05:20:19,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4162 transitions. [2023-08-25 05:20:19,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:20:19,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4162 transitions. [2023-08-25 05:20:19,332 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) [2023-08-25 05:20:19,338 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) [2023-08-25 05:20:19,339 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) [2023-08-25 05:20:19,339 INFO L175 Difference]: Start difference. First operand has 525 places, 1148 transitions, 31533 flow. Second operand 14 states and 4162 transitions. [2023-08-25 05:20:19,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 1388 transitions, 40443 flow [2023-08-25 05:20:23,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 1388 transitions, 39808 flow, removed 32 selfloop flow, removed 12 redundant places. [2023-08-25 05:20:23,394 INFO L231 Difference]: Finished difference. Result has 536 places, 1286 transitions, 36225 flow [2023-08-25 05:20:23,395 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} [2023-08-25 05:20:23,395 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 478 predicate places. [2023-08-25 05:20:23,395 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 1286 transitions, 36225 flow [2023-08-25 05:20:23,396 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) [2023-08-25 05:20:23,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:20:23,396 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] [2023-08-25 05:20:23,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2023-08-25 05:20:23,596 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 [2023-08-25 05:20:23,597 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:20:23,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:20:23,597 INFO L85 PathProgramCache]: Analyzing trace with hash 568742540, now seen corresponding path program 47 times [2023-08-25 05:20:23,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:20:23,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741736258] [2023-08-25 05:20:23,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:20:23,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:20:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:20:24,011 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:24,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:20:24,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741736258] [2023-08-25 05:20:24,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741736258] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:20:24,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226162477] [2023-08-25 05:20:24,012 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:20:24,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:20:24,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:20:24,013 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) [2023-08-25 05:20:24,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-08-25 05:20:24,230 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-25 05:20:24,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:20:24,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:20:24,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:20:24,413 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:24,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:20:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:24,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226162477] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:20:24,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:20:24,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 23 [2023-08-25 05:20:24,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881002537] [2023-08-25 05:20:24,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:20:24,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 05:20:24,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:20:24,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 05:20:24,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2023-08-25 05:20:24,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:20:24,688 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) [2023-08-25 05:20:24,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:20:24,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:20:24,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:20:29,363 INFO L124 PetriNetUnfolderBase]: 4666/8881 cut-off events. [2023-08-25 05:20:29,364 INFO L125 PetriNetUnfolderBase]: For 397043/397060 co-relation queries the response was YES. [2023-08-25 05:20:29,463 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. [2023-08-25 05:20:29,506 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1111 selfloop transitions, 240 changer transitions 16/1384 dead transitions. [2023-08-25 05:20:29,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 1384 transitions, 40983 flow [2023-08-25 05:20:29,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 05:20:29,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 05:20:29,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3575 transitions. [2023-08-25 05:20:29,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904543468763652 [2023-08-25 05:20:29,508 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3575 transitions. [2023-08-25 05:20:29,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3575 transitions. [2023-08-25 05:20:29,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:20:29,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3575 transitions. [2023-08-25 05:20:29,510 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) [2023-08-25 05:20:29,514 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) [2023-08-25 05:20:29,514 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) [2023-08-25 05:20:29,514 INFO L175 Difference]: Start difference. First operand has 536 places, 1286 transitions, 36225 flow. Second operand 12 states and 3575 transitions. [2023-08-25 05:20:29,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 1384 transitions, 40983 flow [2023-08-25 05:20:34,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 1384 transitions, 40711 flow, removed 136 selfloop flow, removed 1 redundant places. [2023-08-25 05:20:34,210 INFO L231 Difference]: Finished difference. Result has 549 places, 1291 transitions, 36690 flow [2023-08-25 05:20:34,211 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} [2023-08-25 05:20:34,211 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 491 predicate places. [2023-08-25 05:20:34,211 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 1291 transitions, 36690 flow [2023-08-25 05:20:34,212 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) [2023-08-25 05:20:34,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:20:34,212 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] [2023-08-25 05:20:34,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-08-25 05:20:34,418 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 [2023-08-25 05:20:34,418 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:20:34,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:20:34,419 INFO L85 PathProgramCache]: Analyzing trace with hash 2130830660, now seen corresponding path program 48 times [2023-08-25 05:20:34,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:20:34,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054470283] [2023-08-25 05:20:34,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:20:34,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:20:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:20:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:34,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:20:34,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054470283] [2023-08-25 05:20:34,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054470283] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:20:34,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027069623] [2023-08-25 05:20:34,806 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:20:34,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:20:34,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:20:34,807 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) [2023-08-25 05:20:34,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-08-25 05:20:35,006 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-25 05:20:35,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:20:35,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:20:35,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:20:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:35,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:20:35,441 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:35,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027069623] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:20:35,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:20:35,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 21 [2023-08-25 05:20:35,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110685542] [2023-08-25 05:20:35,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:20:35,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 05:20:35,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:20:35,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 05:20:35,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2023-08-25 05:20:35,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:20:35,447 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) [2023-08-25 05:20:35,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:20:35,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:20:35,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:20:40,262 INFO L124 PetriNetUnfolderBase]: 4670/8899 cut-off events. [2023-08-25 05:20:40,263 INFO L125 PetriNetUnfolderBase]: For 401198/401211 co-relation queries the response was YES. [2023-08-25 05:20:40,358 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. [2023-08-25 05:20:40,400 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1129 selfloop transitions, 226 changer transitions 19/1391 dead transitions. [2023-08-25 05:20:40,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 1391 transitions, 41559 flow [2023-08-25 05:20:40,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 05:20:40,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 05:20:40,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4448 transitions. [2023-08-25 05:20:40,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3886413280908694 [2023-08-25 05:20:40,403 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4448 transitions. [2023-08-25 05:20:40,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4448 transitions. [2023-08-25 05:20:40,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:20:40,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4448 transitions. [2023-08-25 05:20:40,406 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) [2023-08-25 05:20:40,410 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) [2023-08-25 05:20:40,411 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) [2023-08-25 05:20:40,411 INFO L175 Difference]: Start difference. First operand has 549 places, 1291 transitions, 36690 flow. Second operand 15 states and 4448 transitions. [2023-08-25 05:20:40,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 1391 transitions, 41559 flow [2023-08-25 05:20:44,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 1391 transitions, 41179 flow, removed 18 selfloop flow, removed 7 redundant places. [2023-08-25 05:20:44,925 INFO L231 Difference]: Finished difference. Result has 559 places, 1298 transitions, 37087 flow [2023-08-25 05:20:44,926 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} [2023-08-25 05:20:44,926 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 501 predicate places. [2023-08-25 05:20:44,926 INFO L495 AbstractCegarLoop]: Abstraction has has 559 places, 1298 transitions, 37087 flow [2023-08-25 05:20:44,927 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) [2023-08-25 05:20:44,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:20:44,927 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] [2023-08-25 05:20:44,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-08-25 05:20:45,128 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 [2023-08-25 05:20:45,128 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:20:45,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:20:45,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1806393014, now seen corresponding path program 49 times [2023-08-25 05:20:45,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:20:45,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185023472] [2023-08-25 05:20:45,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:20:45,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:20:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:20:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:45,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:20:45,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185023472] [2023-08-25 05:20:45,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185023472] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:20:45,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999307779] [2023-08-25 05:20:45,541 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:20:45,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:20:45,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:20:45,542 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) [2023-08-25 05:20:45,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-08-25 05:20:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:20:45,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:20:45,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:20:45,896 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:45,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:20:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:46,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999307779] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:20:46,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:20:46,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2023-08-25 05:20:46,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941969387] [2023-08-25 05:20:46,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:20:46,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 05:20:46,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:20:46,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 05:20:46,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-08-25 05:20:46,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:20:46,125 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) [2023-08-25 05:20:46,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:20:46,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:20:46,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:20:50,833 INFO L124 PetriNetUnfolderBase]: 4669/8892 cut-off events. [2023-08-25 05:20:50,833 INFO L125 PetriNetUnfolderBase]: For 409325/409338 co-relation queries the response was YES. [2023-08-25 05:20:50,933 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. [2023-08-25 05:20:50,977 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1166 selfloop transitions, 181 changer transitions 12/1376 dead transitions. [2023-08-25 05:20:50,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 1376 transitions, 41365 flow [2023-08-25 05:20:50,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 05:20:50,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 05:20:50,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3855 transitions. [2023-08-25 05:20:50,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3886480491985079 [2023-08-25 05:20:50,980 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3855 transitions. [2023-08-25 05:20:50,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3855 transitions. [2023-08-25 05:20:50,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:20:50,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3855 transitions. [2023-08-25 05:20:50,982 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) [2023-08-25 05:20:50,986 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) [2023-08-25 05:20:50,987 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) [2023-08-25 05:20:50,987 INFO L175 Difference]: Start difference. First operand has 559 places, 1298 transitions, 37087 flow. Second operand 13 states and 3855 transitions. [2023-08-25 05:20:50,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 1376 transitions, 41365 flow [2023-08-25 05:20:55,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 1376 transitions, 40894 flow, removed 21 selfloop flow, removed 10 redundant places. [2023-08-25 05:20:55,576 INFO L231 Difference]: Finished difference. Result has 565 places, 1309 transitions, 37490 flow [2023-08-25 05:20:55,577 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} [2023-08-25 05:20:55,577 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 507 predicate places. [2023-08-25 05:20:55,577 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 1309 transitions, 37490 flow [2023-08-25 05:20:55,578 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) [2023-08-25 05:20:55,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:20:55,578 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] [2023-08-25 05:20:55,583 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-08-25 05:20:55,778 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 [2023-08-25 05:20:55,779 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:20:55,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:20:55,779 INFO L85 PathProgramCache]: Analyzing trace with hash 449119170, now seen corresponding path program 50 times [2023-08-25 05:20:55,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:20:55,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090465185] [2023-08-25 05:20:55,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:20:55,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:20:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:20:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:56,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:20:56,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090465185] [2023-08-25 05:20:56,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090465185] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:20:56,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826876419] [2023-08-25 05:20:56,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:20:56,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:20:56,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:20:56,125 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) [2023-08-25 05:20:56,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-08-25 05:20:56,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:20:56,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:20:56,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:20:56,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:20:56,480 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 05:20:56,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:20:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:20:56,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826876419] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:20:56,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:20:56,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 20 [2023-08-25 05:20:56,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496406924] [2023-08-25 05:20:56,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:20:56,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:20:56,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:20:56,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:20:56,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:20:56,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:20:56,798 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) [2023-08-25 05:20:56,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:20:56,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:20:56,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:01,969 INFO L124 PetriNetUnfolderBase]: 4976/9545 cut-off events. [2023-08-25 05:21:01,969 INFO L125 PetriNetUnfolderBase]: For 451372/451389 co-relation queries the response was YES. [2023-08-25 05:21:02,093 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. [2023-08-25 05:21:02,143 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1317 selfloop transitions, 107 changer transitions 18/1459 dead transitions. [2023-08-25 05:21:02,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1459 transitions, 43637 flow [2023-08-25 05:21:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 05:21:02,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 05:21:02,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4449 transitions. [2023-08-25 05:21:02,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3887287024901704 [2023-08-25 05:21:02,146 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4449 transitions. [2023-08-25 05:21:02,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4449 transitions. [2023-08-25 05:21:02,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:02,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4449 transitions. [2023-08-25 05:21:02,148 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) [2023-08-25 05:21:02,153 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) [2023-08-25 05:21:02,154 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) [2023-08-25 05:21:02,154 INFO L175 Difference]: Start difference. First operand has 565 places, 1309 transitions, 37490 flow. Second operand 15 states and 4449 transitions. [2023-08-25 05:21:02,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 1459 transitions, 43637 flow [2023-08-25 05:21:07,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 1459 transitions, 43387 flow, removed 38 selfloop flow, removed 6 redundant places. [2023-08-25 05:21:07,581 INFO L231 Difference]: Finished difference. Result has 579 places, 1362 transitions, 39193 flow [2023-08-25 05:21:07,582 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} [2023-08-25 05:21:07,582 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 521 predicate places. [2023-08-25 05:21:07,582 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 1362 transitions, 39193 flow [2023-08-25 05:21:07,583 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) [2023-08-25 05:21:07,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:07,583 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] [2023-08-25 05:21:07,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2023-08-25 05:21:07,783 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 [2023-08-25 05:21:07,784 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:21:07,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:07,784 INFO L85 PathProgramCache]: Analyzing trace with hash -856153900, now seen corresponding path program 51 times [2023-08-25 05:21:07,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:07,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152975115] [2023-08-25 05:21:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:07,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:08,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:08,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152975115] [2023-08-25 05:21:08,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152975115] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:21:08,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329212915] [2023-08-25 05:21:08,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:21:08,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:21:08,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:08,201 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) [2023-08-25 05:21:08,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-08-25 05:21:08,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 05:21:08,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:21:08,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:21:08,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:21:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 05:21:08,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:21:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:08,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329212915] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:21:08,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:21:08,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 20 [2023-08-25 05:21:08,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301667402] [2023-08-25 05:21:08,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:21:08,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:21:08,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:08,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:21:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:21:08,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:21:08,827 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) [2023-08-25 05:21:08,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:08,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:21:08,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:14,330 INFO L124 PetriNetUnfolderBase]: 5051/9660 cut-off events. [2023-08-25 05:21:14,330 INFO L125 PetriNetUnfolderBase]: For 469436/469453 co-relation queries the response was YES. [2023-08-25 05:21:14,511 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. [2023-08-25 05:21:14,599 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1320 selfloop transitions, 91 changer transitions 18/1446 dead transitions. [2023-08-25 05:21:14,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 1446 transitions, 43607 flow [2023-08-25 05:21:14,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 05:21:14,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 05:21:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3555 transitions. [2023-08-25 05:21:14,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3882699868938401 [2023-08-25 05:21:14,602 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3555 transitions. [2023-08-25 05:21:14,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3555 transitions. [2023-08-25 05:21:14,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:14,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3555 transitions. [2023-08-25 05:21:14,605 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) [2023-08-25 05:21:14,610 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) [2023-08-25 05:21:14,611 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) [2023-08-25 05:21:14,611 INFO L175 Difference]: Start difference. First operand has 579 places, 1362 transitions, 39193 flow. Second operand 12 states and 3555 transitions. [2023-08-25 05:21:14,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 1446 transitions, 43607 flow [2023-08-25 05:21:20,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 1446 transitions, 43415 flow, removed 92 selfloop flow, removed 3 redundant places. [2023-08-25 05:21:20,300 INFO L231 Difference]: Finished difference. Result has 591 places, 1388 transitions, 39927 flow [2023-08-25 05:21:20,301 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} [2023-08-25 05:21:20,301 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 533 predicate places. [2023-08-25 05:21:20,302 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 1388 transitions, 39927 flow [2023-08-25 05:21:20,302 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) [2023-08-25 05:21:20,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:20,302 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] [2023-08-25 05:21:20,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2023-08-25 05:21:20,503 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 [2023-08-25 05:21:20,503 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:21:20,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:20,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1170528624, now seen corresponding path program 52 times [2023-08-25 05:21:20,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:20,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49729248] [2023-08-25 05:21:20,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:20,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:20,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:20,937 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:20,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:20,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49729248] [2023-08-25 05:21:20,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49729248] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:21:20,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904093920] [2023-08-25 05:21:20,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:21:20,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:21:20,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:20,939 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) [2023-08-25 05:21:20,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-08-25 05:21:21,122 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:21:21,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:21:21,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:21:21,126 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:21:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 05:21:21,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:21:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:21,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904093920] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:21:21,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:21:21,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2023-08-25 05:21:21,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235481298] [2023-08-25 05:21:21,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:21:21,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 05:21:21,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:21,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 05:21:21,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2023-08-25 05:21:21,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:21:21,530 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) [2023-08-25 05:21:21,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:21,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:21:21,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:27,193 INFO L124 PetriNetUnfolderBase]: 5049/9665 cut-off events. [2023-08-25 05:21:27,193 INFO L125 PetriNetUnfolderBase]: For 472150/472163 co-relation queries the response was YES. [2023-08-25 05:21:27,312 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. [2023-08-25 05:21:27,358 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1325 selfloop transitions, 106 changer transitions 19/1467 dead transitions. [2023-08-25 05:21:27,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 1467 transitions, 44519 flow [2023-08-25 05:21:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 05:21:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 05:21:27,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3856 transitions. [2023-08-25 05:21:27,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.388748865813086 [2023-08-25 05:21:27,361 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3856 transitions. [2023-08-25 05:21:27,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3856 transitions. [2023-08-25 05:21:27,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:27,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3856 transitions. [2023-08-25 05:21:27,363 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) [2023-08-25 05:21:27,367 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) [2023-08-25 05:21:27,368 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) [2023-08-25 05:21:27,368 INFO L175 Difference]: Start difference. First operand has 591 places, 1388 transitions, 39927 flow. Second operand 13 states and 3856 transitions. [2023-08-25 05:21:27,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 1467 transitions, 44519 flow [2023-08-25 05:21:33,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 1467 transitions, 44340 flow, removed 79 selfloop flow, removed 3 redundant places. [2023-08-25 05:21:33,089 INFO L231 Difference]: Finished difference. Result has 601 places, 1390 transitions, 40054 flow [2023-08-25 05:21:33,090 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} [2023-08-25 05:21:33,090 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 543 predicate places. [2023-08-25 05:21:33,090 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 1390 transitions, 40054 flow [2023-08-25 05:21:33,091 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) [2023-08-25 05:21:33,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:33,091 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] [2023-08-25 05:21:33,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2023-08-25 05:21:33,291 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 [2023-08-25 05:21:33,292 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:21:33,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1591357800, now seen corresponding path program 53 times [2023-08-25 05:21:33,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:33,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974899613] [2023-08-25 05:21:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:33,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:33,739 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:33,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:33,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974899613] [2023-08-25 05:21:33,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974899613] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:21:33,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265835604] [2023-08-25 05:21:33,739 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:21:33,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:21:33,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:33,740 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) [2023-08-25 05:21:33,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-08-25 05:21:33,920 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 05:21:33,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:21:33,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:21:33,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:21:34,086 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 05:21:34,086 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:21:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:34,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265835604] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:21:34,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:21:34,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 23 [2023-08-25 05:21:34,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719757489] [2023-08-25 05:21:34,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:21:34,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 05:21:34,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 05:21:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2023-08-25 05:21:34,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:21:34,383 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) [2023-08-25 05:21:34,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:34,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:21:34,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:40,457 INFO L124 PetriNetUnfolderBase]: 5167/9873 cut-off events. [2023-08-25 05:21:40,457 INFO L125 PetriNetUnfolderBase]: For 488931/488944 co-relation queries the response was YES. [2023-08-25 05:21:40,590 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. [2023-08-25 05:21:40,646 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1334 selfloop transitions, 125 changer transitions 16/1492 dead transitions. [2023-08-25 05:21:40,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 1492 transitions, 45196 flow [2023-08-25 05:21:40,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 05:21:40,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 05:21:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4148 transitions. [2023-08-25 05:21:40,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38831679460775137 [2023-08-25 05:21:40,650 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4148 transitions. [2023-08-25 05:21:40,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4148 transitions. [2023-08-25 05:21:40,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:40,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4148 transitions. [2023-08-25 05:21:40,653 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) [2023-08-25 05:21:40,657 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) [2023-08-25 05:21:40,658 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) [2023-08-25 05:21:40,658 INFO L175 Difference]: Start difference. First operand has 601 places, 1390 transitions, 40054 flow. Second operand 14 states and 4148 transitions. [2023-08-25 05:21:40,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 1492 transitions, 45196 flow [2023-08-25 05:21:46,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 1492 transitions, 44987 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-08-25 05:21:46,745 INFO L231 Difference]: Finished difference. Result has 607 places, 1406 transitions, 40686 flow [2023-08-25 05:21:46,746 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} [2023-08-25 05:21:46,746 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 549 predicate places. [2023-08-25 05:21:46,746 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 1406 transitions, 40686 flow [2023-08-25 05:21:46,747 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) [2023-08-25 05:21:46,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:46,747 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] [2023-08-25 05:21:46,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2023-08-25 05:21:46,947 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 [2023-08-25 05:21:46,948 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:21:46,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:46,948 INFO L85 PathProgramCache]: Analyzing trace with hash -195608674, now seen corresponding path program 54 times [2023-08-25 05:21:46,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:46,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786463413] [2023-08-25 05:21:46,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:46,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:47,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:47,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786463413] [2023-08-25 05:21:47,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786463413] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:21:47,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44661062] [2023-08-25 05:21:47,350 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:21:47,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:21:47,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:47,352 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) [2023-08-25 05:21:47,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-08-25 05:21:47,556 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-25 05:21:47,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:21:47,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:21:47,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:21:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 05:21:47,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:21:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:47,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44661062] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:21:47,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:21:47,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 19 [2023-08-25 05:21:47,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588550192] [2023-08-25 05:21:47,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:21:47,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 05:21:47,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:47,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 05:21:47,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-08-25 05:21:47,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:21:47,965 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) [2023-08-25 05:21:47,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:47,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:21:47,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:53,893 INFO L124 PetriNetUnfolderBase]: 5168/9883 cut-off events. [2023-08-25 05:21:53,894 INFO L125 PetriNetUnfolderBase]: For 500908/500921 co-relation queries the response was YES. [2023-08-25 05:21:54,018 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. [2023-08-25 05:21:54,066 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1352 selfloop transitions, 72 changer transitions 54/1495 dead transitions. [2023-08-25 05:21:54,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 1495 transitions, 45540 flow [2023-08-25 05:21:54,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 05:21:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 05:21:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4138 transitions. [2023-08-25 05:21:54,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3873806403295263 [2023-08-25 05:21:54,069 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4138 transitions. [2023-08-25 05:21:54,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4138 transitions. [2023-08-25 05:21:54,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:54,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4138 transitions. [2023-08-25 05:21:54,072 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) [2023-08-25 05:21:54,076 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) [2023-08-25 05:21:54,077 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) [2023-08-25 05:21:54,077 INFO L175 Difference]: Start difference. First operand has 607 places, 1406 transitions, 40686 flow. Second operand 14 states and 4138 transitions. [2023-08-25 05:21:54,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 1495 transitions, 45540 flow [2023-08-25 05:22:00,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 1495 transitions, 45335 flow, removed 30 selfloop flow, removed 8 redundant places. [2023-08-25 05:22:00,121 INFO L231 Difference]: Finished difference. Result has 618 places, 1403 transitions, 40602 flow [2023-08-25 05:22:00,122 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} [2023-08-25 05:22:00,122 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 560 predicate places. [2023-08-25 05:22:00,122 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 1403 transitions, 40602 flow [2023-08-25 05:22:00,123 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) [2023-08-25 05:22:00,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:22:00,123 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] [2023-08-25 05:22:00,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-08-25 05:22:00,324 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 [2023-08-25 05:22:00,324 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:22:00,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:22:00,324 INFO L85 PathProgramCache]: Analyzing trace with hash 737122890, now seen corresponding path program 55 times [2023-08-25 05:22:00,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:22:00,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438314837] [2023-08-25 05:22:00,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:22:00,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:22:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:22:00,712 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:00,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:22:00,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438314837] [2023-08-25 05:22:00,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438314837] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:22:00,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524808691] [2023-08-25 05:22:00,713 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:22:00,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:22:00,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:22:00,714 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) [2023-08-25 05:22:00,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-08-25 05:22:00,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:22:00,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:22:00,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:22:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 05:22:01,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:22:01,347 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:01,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524808691] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:22:01,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:22:01,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 21 [2023-08-25 05:22:01,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763163048] [2023-08-25 05:22:01,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:22:01,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 05:22:01,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:22:01,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 05:22:01,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2023-08-25 05:22:01,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:22:01,352 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) [2023-08-25 05:22:01,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:22:01,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:22:01,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:22:06,656 INFO L124 PetriNetUnfolderBase]: 5108/9752 cut-off events. [2023-08-25 05:22:06,656 INFO L125 PetriNetUnfolderBase]: For 498879/498892 co-relation queries the response was YES. [2023-08-25 05:22:06,768 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. [2023-08-25 05:22:06,811 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1315 selfloop transitions, 120 changer transitions 26/1478 dead transitions. [2023-08-25 05:22:06,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 1478 transitions, 45188 flow [2023-08-25 05:22:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 05:22:06,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 05:22:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3264 transitions. [2023-08-25 05:22:06,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888955081615632 [2023-08-25 05:22:06,814 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3264 transitions. [2023-08-25 05:22:06,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3264 transitions. [2023-08-25 05:22:06,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:22:06,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3264 transitions. [2023-08-25 05:22:06,816 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) [2023-08-25 05:22:06,819 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) [2023-08-25 05:22:06,819 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) [2023-08-25 05:22:06,819 INFO L175 Difference]: Start difference. First operand has 618 places, 1403 transitions, 40602 flow. Second operand 11 states and 3264 transitions. [2023-08-25 05:22:06,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 1478 transitions, 45188 flow [2023-08-25 05:22:12,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 1478 transitions, 45043 flow, removed 21 selfloop flow, removed 8 redundant places. [2023-08-25 05:22:12,865 INFO L231 Difference]: Finished difference. Result has 617 places, 1405 transitions, 40825 flow [2023-08-25 05:22:12,866 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} [2023-08-25 05:22:12,866 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 559 predicate places. [2023-08-25 05:22:12,866 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 1405 transitions, 40825 flow [2023-08-25 05:22:12,867 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) [2023-08-25 05:22:12,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:22:12,867 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] [2023-08-25 05:22:12,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2023-08-25 05:22:13,073 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 [2023-08-25 05:22:13,073 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:22:13,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:22:13,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1893943718, now seen corresponding path program 56 times [2023-08-25 05:22:13,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:22:13,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377164815] [2023-08-25 05:22:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:22:13,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:22:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:22:13,419 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:13,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:22:13,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377164815] [2023-08-25 05:22:13,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377164815] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:22:13,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033404933] [2023-08-25 05:22:13,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:22:13,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:22:13,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:22:13,421 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) [2023-08-25 05:22:13,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2023-08-25 05:22:13,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:22:13,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:22:13,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:22:13,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:22:13,784 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 05:22:13,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:22:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:14,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033404933] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:22:14,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:22:14,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 21 [2023-08-25 05:22:14,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317873161] [2023-08-25 05:22:14,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:22:14,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 05:22:14,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:22:14,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 05:22:14,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2023-08-25 05:22:14,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:22:14,090 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) [2023-08-25 05:22:14,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:22:14,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:22:14,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:22:20,001 INFO L124 PetriNetUnfolderBase]: 5109/9757 cut-off events. [2023-08-25 05:22:20,001 INFO L125 PetriNetUnfolderBase]: For 496630/496643 co-relation queries the response was YES. [2023-08-25 05:22:20,120 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. [2023-08-25 05:22:20,167 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1332 selfloop transitions, 87 changer transitions 40/1476 dead transitions. [2023-08-25 05:22:20,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 1476 transitions, 45148 flow [2023-08-25 05:22:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 05:22:20,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 05:22:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4431 transitions. [2023-08-25 05:22:20,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871559633027523 [2023-08-25 05:22:20,170 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4431 transitions. [2023-08-25 05:22:20,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4431 transitions. [2023-08-25 05:22:20,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:22:20,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4431 transitions. [2023-08-25 05:22:20,173 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) [2023-08-25 05:22:20,177 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) [2023-08-25 05:22:20,177 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) [2023-08-25 05:22:20,177 INFO L175 Difference]: Start difference. First operand has 617 places, 1405 transitions, 40825 flow. Second operand 15 states and 4431 transitions. [2023-08-25 05:22:20,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 1476 transitions, 45148 flow [2023-08-25 05:22:26,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 1476 transitions, 44922 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-08-25 05:22:26,067 INFO L231 Difference]: Finished difference. Result has 624 places, 1397 transitions, 40521 flow [2023-08-25 05:22:26,068 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} [2023-08-25 05:22:26,068 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 566 predicate places. [2023-08-25 05:22:26,068 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 1397 transitions, 40521 flow [2023-08-25 05:22:26,069 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) [2023-08-25 05:22:26,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:22:26,069 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] [2023-08-25 05:22:26,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2023-08-25 05:22:26,269 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 [2023-08-25 05:22:26,269 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:22:26,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:22:26,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1974144734, now seen corresponding path program 57 times [2023-08-25 05:22:26,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:22:26,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417097927] [2023-08-25 05:22:26,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:22:26,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:22:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:22:26,561 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:26,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:22:26,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417097927] [2023-08-25 05:22:26,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417097927] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:22:26,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172115519] [2023-08-25 05:22:26,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:22:26,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:22:26,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:22:26,563 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) [2023-08-25 05:22:26,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2023-08-25 05:22:26,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-25 05:22:26,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:22:26,764 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:22:26,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:22:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:26,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:22:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:27,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172115519] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:22:27,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:22:27,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-25 05:22:27,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828454641] [2023-08-25 05:22:27,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:22:27,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 05:22:27,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:22:27,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 05:22:27,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-08-25 05:22:27,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:22:27,143 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) [2023-08-25 05:22:27,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:22:27,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:22:27,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:22:33,146 INFO L124 PetriNetUnfolderBase]: 5278/10098 cut-off events. [2023-08-25 05:22:33,146 INFO L125 PetriNetUnfolderBase]: For 522978/522991 co-relation queries the response was YES. [2023-08-25 05:22:33,282 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. [2023-08-25 05:22:33,331 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1379 selfloop transitions, 116 changer transitions 21/1533 dead transitions. [2023-08-25 05:22:33,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 1533 transitions, 46933 flow [2023-08-25 05:22:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 05:22:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 05:22:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3847 transitions. [2023-08-25 05:22:33,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38784151628188324 [2023-08-25 05:22:33,333 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3847 transitions. [2023-08-25 05:22:33,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3847 transitions. [2023-08-25 05:22:33,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:22:33,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3847 transitions. [2023-08-25 05:22:33,336 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) [2023-08-25 05:22:33,340 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) [2023-08-25 05:22:33,340 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) [2023-08-25 05:22:33,340 INFO L175 Difference]: Start difference. First operand has 624 places, 1397 transitions, 40521 flow. Second operand 13 states and 3847 transitions. [2023-08-25 05:22:33,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 1533 transitions, 46933 flow [2023-08-25 05:22:39,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 1533 transitions, 46812 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-08-25 05:22:39,463 INFO L231 Difference]: Finished difference. Result has 630 places, 1445 transitions, 42251 flow [2023-08-25 05:22:39,464 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} [2023-08-25 05:22:39,464 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 572 predicate places. [2023-08-25 05:22:39,464 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 1445 transitions, 42251 flow [2023-08-25 05:22:39,464 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) [2023-08-25 05:22:39,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:22:39,465 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] [2023-08-25 05:22:39,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2023-08-25 05:22:39,665 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 [2023-08-25 05:22:39,665 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:22:39,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:22:39,665 INFO L85 PathProgramCache]: Analyzing trace with hash 659780008, now seen corresponding path program 58 times [2023-08-25 05:22:39,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:22:39,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917548944] [2023-08-25 05:22:39,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:22:39,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:22:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:22:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:39,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:22:39,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917548944] [2023-08-25 05:22:39,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917548944] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:22:39,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980256411] [2023-08-25 05:22:39,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:22:39,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:22:39,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:22:39,975 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) [2023-08-25 05:22:39,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-08-25 05:22:40,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:22:40,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:22:40,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:22:40,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:22:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:40,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:22:40,583 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:40,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980256411] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:22:40,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:22:40,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-25 05:22:40,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272207539] [2023-08-25 05:22:40,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:22:40,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:22:40,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:22:40,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:22:40,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:22:40,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:22:40,587 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) [2023-08-25 05:22:40,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:22:40,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:22:40,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:22:46,574 INFO L124 PetriNetUnfolderBase]: 5368/10266 cut-off events. [2023-08-25 05:22:46,574 INFO L125 PetriNetUnfolderBase]: For 552851/552868 co-relation queries the response was YES. [2023-08-25 05:22:46,695 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. [2023-08-25 05:22:46,741 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1360 selfloop transitions, 173 changer transitions 27/1577 dead transitions. [2023-08-25 05:22:46,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 1577 transitions, 48570 flow [2023-08-25 05:22:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 05:22:46,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 05:22:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4736 transitions. [2023-08-25 05:22:46,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38794233289646135 [2023-08-25 05:22:46,744 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4736 transitions. [2023-08-25 05:22:46,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4736 transitions. [2023-08-25 05:22:46,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:22:46,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4736 transitions. [2023-08-25 05:22:46,747 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) [2023-08-25 05:22:46,751 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) [2023-08-25 05:22:46,752 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) [2023-08-25 05:22:46,752 INFO L175 Difference]: Start difference. First operand has 630 places, 1445 transitions, 42251 flow. Second operand 16 states and 4736 transitions. [2023-08-25 05:22:46,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 1577 transitions, 48570 flow [2023-08-25 05:22:53,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 1577 transitions, 48266 flow, removed 115 selfloop flow, removed 5 redundant places. [2023-08-25 05:22:53,220 INFO L231 Difference]: Finished difference. Result has 644 places, 1474 transitions, 43469 flow [2023-08-25 05:22:53,221 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} [2023-08-25 05:22:53,221 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 586 predicate places. [2023-08-25 05:22:53,221 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 1474 transitions, 43469 flow [2023-08-25 05:22:53,222 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) [2023-08-25 05:22:53,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:22:53,222 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] [2023-08-25 05:22:53,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2023-08-25 05:22:53,422 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 [2023-08-25 05:22:53,422 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:22:53,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:22:53,423 INFO L85 PathProgramCache]: Analyzing trace with hash 382637218, now seen corresponding path program 59 times [2023-08-25 05:22:53,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:22:53,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417349956] [2023-08-25 05:22:53,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:22:53,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:22:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:22:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:53,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:22:53,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417349956] [2023-08-25 05:22:53,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417349956] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:22:53,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787462090] [2023-08-25 05:22:53,728 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:22:53,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:22:53,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:22:53,729 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) [2023-08-25 05:22:53,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2023-08-25 05:22:53,936 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-25 05:22:53,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:22:53,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:22:53,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:22:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:54,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:22:54,348 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:54,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787462090] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:22:54,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:22:54,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-25 05:22:54,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825310181] [2023-08-25 05:22:54,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:22:54,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 05:22:54,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:22:54,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 05:22:54,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2023-08-25 05:22:54,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:22:54,354 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) [2023-08-25 05:22:54,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:22:54,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:22:54,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:00,447 INFO L124 PetriNetUnfolderBase]: 5367/10259 cut-off events. [2023-08-25 05:23:00,447 INFO L125 PetriNetUnfolderBase]: For 560309/560326 co-relation queries the response was YES. [2023-08-25 05:23:00,585 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. [2023-08-25 05:23:00,634 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1358 selfloop transitions, 170 changer transitions 26/1571 dead transitions. [2023-08-25 05:23:00,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 1571 transitions, 48894 flow [2023-08-25 05:23:00,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 05:23:00,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 05:23:00,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4150 transitions. [2023-08-25 05:23:00,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38850402546339635 [2023-08-25 05:23:00,637 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4150 transitions. [2023-08-25 05:23:00,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4150 transitions. [2023-08-25 05:23:00,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:00,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4150 transitions. [2023-08-25 05:23:00,640 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) [2023-08-25 05:23:00,644 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) [2023-08-25 05:23:00,645 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) [2023-08-25 05:23:00,645 INFO L175 Difference]: Start difference. First operand has 644 places, 1474 transitions, 43469 flow. Second operand 14 states and 4150 transitions. [2023-08-25 05:23:00,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 656 places, 1571 transitions, 48894 flow [2023-08-25 05:23:07,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 1571 transitions, 48535 flow, removed 137 selfloop flow, removed 6 redundant places. [2023-08-25 05:23:07,678 INFO L231 Difference]: Finished difference. Result has 653 places, 1476 transitions, 43615 flow [2023-08-25 05:23:07,679 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} [2023-08-25 05:23:07,680 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 595 predicate places. [2023-08-25 05:23:07,680 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 1476 transitions, 43615 flow [2023-08-25 05:23:07,680 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) [2023-08-25 05:23:07,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:07,681 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] [2023-08-25 05:23:07,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2023-08-25 05:23:07,881 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 [2023-08-25 05:23:07,881 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:23:07,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:07,882 INFO L85 PathProgramCache]: Analyzing trace with hash -702004276, now seen corresponding path program 60 times [2023-08-25 05:23:07,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:07,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394201639] [2023-08-25 05:23:07,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:07,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:08,206 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:08,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:08,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394201639] [2023-08-25 05:23:08,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394201639] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:23:08,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364589461] [2023-08-25 05:23:08,207 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:23:08,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:23:08,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:23:08,208 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) [2023-08-25 05:23:08,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2023-08-25 05:23:08,421 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-25 05:23:08,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:23:08,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:23:08,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:23:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:08,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:23:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:08,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364589461] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:23:08,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:23:08,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-25 05:23:08,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28098437] [2023-08-25 05:23:08,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:23:08,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 05:23:08,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:08,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 05:23:08,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-08-25 05:23:08,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:23:08,856 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) [2023-08-25 05:23:08,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:08,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:23:08,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:14,970 INFO L124 PetriNetUnfolderBase]: 5368/10272 cut-off events. [2023-08-25 05:23:14,970 INFO L125 PetriNetUnfolderBase]: For 560927/560940 co-relation queries the response was YES. [2023-08-25 05:23:15,112 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. [2023-08-25 05:23:15,319 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1373 selfloop transitions, 157 changer transitions 28/1575 dead transitions. [2023-08-25 05:23:15,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 1575 transitions, 48965 flow [2023-08-25 05:23:15,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 05:23:15,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 05:23:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5022 transitions. [2023-08-25 05:23:15,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38717138231439363 [2023-08-25 05:23:15,324 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5022 transitions. [2023-08-25 05:23:15,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5022 transitions. [2023-08-25 05:23:15,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:15,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5022 transitions. [2023-08-25 05:23:15,328 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) [2023-08-25 05:23:15,334 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) [2023-08-25 05:23:15,335 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) [2023-08-25 05:23:15,336 INFO L175 Difference]: Start difference. First operand has 653 places, 1476 transitions, 43615 flow. Second operand 17 states and 5022 transitions. [2023-08-25 05:23:15,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 1575 transitions, 48965 flow [2023-08-25 05:23:22,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 660 places, 1575 transitions, 48698 flow, removed 30 selfloop flow, removed 8 redundant places. [2023-08-25 05:23:22,181 INFO L231 Difference]: Finished difference. Result has 664 places, 1479 transitions, 43855 flow [2023-08-25 05:23:22,182 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} [2023-08-25 05:23:22,183 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 606 predicate places. [2023-08-25 05:23:22,183 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 1479 transitions, 43855 flow [2023-08-25 05:23:22,184 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) [2023-08-25 05:23:22,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:22,184 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] [2023-08-25 05:23:22,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2023-08-25 05:23:22,391 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 [2023-08-25 05:23:22,391 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:23:22,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:22,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1639442768, now seen corresponding path program 61 times [2023-08-25 05:23:22,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:22,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748451913] [2023-08-25 05:23:22,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:22,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:22,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:22,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748451913] [2023-08-25 05:23:22,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748451913] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:23:22,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133810684] [2023-08-25 05:23:22,785 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:23:22,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:23:22,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:23:22,786 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) [2023-08-25 05:23:22,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2023-08-25 05:23:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:22,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:23:22,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:23:23,146 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:23,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:23:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:23,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133810684] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:23:23,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:23:23,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-25 05:23:23,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158274233] [2023-08-25 05:23:23,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:23:23,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 05:23:23,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:23,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 05:23:23,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-08-25 05:23:23,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:23:23,353 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) [2023-08-25 05:23:23,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:23,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:23:23,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:29,551 INFO L124 PetriNetUnfolderBase]: 5363/10249 cut-off events. [2023-08-25 05:23:29,551 INFO L125 PetriNetUnfolderBase]: For 553894/553911 co-relation queries the response was YES. [2023-08-25 05:23:29,681 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. [2023-08-25 05:23:29,729 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1434 selfloop transitions, 77 changer transitions 17/1545 dead transitions. [2023-08-25 05:23:29,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 1545 transitions, 48426 flow [2023-08-25 05:23:29,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 05:23:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 05:23:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3836 transitions. [2023-08-25 05:23:29,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38673253352152437 [2023-08-25 05:23:29,732 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3836 transitions. [2023-08-25 05:23:29,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3836 transitions. [2023-08-25 05:23:29,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:29,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3836 transitions. [2023-08-25 05:23:29,734 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) [2023-08-25 05:23:29,738 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) [2023-08-25 05:23:29,738 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) [2023-08-25 05:23:29,738 INFO L175 Difference]: Start difference. First operand has 664 places, 1479 transitions, 43855 flow. Second operand 13 states and 3836 transitions. [2023-08-25 05:23:29,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 1545 transitions, 48426 flow [2023-08-25 05:23:36,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 1545 transitions, 47999 flow, removed 16 selfloop flow, removed 12 redundant places. [2023-08-25 05:23:36,446 INFO L231 Difference]: Finished difference. Result has 669 places, 1495 transitions, 44307 flow [2023-08-25 05:23:36,447 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} [2023-08-25 05:23:36,447 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 611 predicate places. [2023-08-25 05:23:36,447 INFO L495 AbstractCegarLoop]: Abstraction has has 669 places, 1495 transitions, 44307 flow [2023-08-25 05:23:36,448 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) [2023-08-25 05:23:36,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:36,448 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] [2023-08-25 05:23:36,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2023-08-25 05:23:36,648 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 [2023-08-25 05:23:36,648 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:23:36,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:36,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1917559960, now seen corresponding path program 62 times [2023-08-25 05:23:36,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:36,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602822530] [2023-08-25 05:23:36,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:36,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:36,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:36,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602822530] [2023-08-25 05:23:36,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602822530] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:23:36,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195439048] [2023-08-25 05:23:36,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:23:36,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:23:36,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:23:36,993 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) [2023-08-25 05:23:37,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2023-08-25 05:23:37,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:23:37,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:23:37,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:23:37,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:23:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 05:23:37,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:23:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:37,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195439048] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:23:37,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:23:37,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2023-08-25 05:23:37,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636411167] [2023-08-25 05:23:37,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:23:37,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 05:23:37,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:37,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 05:23:37,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2023-08-25 05:23:37,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:23:37,615 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) [2023-08-25 05:23:37,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:37,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:23:37,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:43,810 INFO L124 PetriNetUnfolderBase]: 5634/10788 cut-off events. [2023-08-25 05:23:43,810 INFO L125 PetriNetUnfolderBase]: For 605364/605377 co-relation queries the response was YES. [2023-08-25 05:23:43,941 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. [2023-08-25 05:23:43,989 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1485 selfloop transitions, 111 changer transitions 13/1626 dead transitions. [2023-08-25 05:23:43,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 1626 transitions, 51012 flow [2023-08-25 05:23:43,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 05:23:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 05:23:43,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2677 transitions. [2023-08-25 05:23:43,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38983544488131644 [2023-08-25 05:23:43,992 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2677 transitions. [2023-08-25 05:23:43,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2677 transitions. [2023-08-25 05:23:43,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:43,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2677 transitions. [2023-08-25 05:23:43,993 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) [2023-08-25 05:23:43,996 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) [2023-08-25 05:23:43,996 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) [2023-08-25 05:23:43,996 INFO L175 Difference]: Start difference. First operand has 669 places, 1495 transitions, 44307 flow. Second operand 9 states and 2677 transitions. [2023-08-25 05:23:43,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 676 places, 1626 transitions, 51012 flow [2023-08-25 05:23:51,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 669 places, 1626 transitions, 50777 flow, removed 46 selfloop flow, removed 7 redundant places. [2023-08-25 05:23:51,572 INFO L231 Difference]: Finished difference. Result has 674 places, 1554 transitions, 46418 flow [2023-08-25 05:23:51,573 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} [2023-08-25 05:23:51,573 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 616 predicate places. [2023-08-25 05:23:51,574 INFO L495 AbstractCegarLoop]: Abstraction has has 674 places, 1554 transitions, 46418 flow [2023-08-25 05:23:51,574 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) [2023-08-25 05:23:51,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:51,574 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] [2023-08-25 05:23:51,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2023-08-25 05:23:51,775 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 [2023-08-25 05:23:51,775 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:23:51,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:51,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1062442608, now seen corresponding path program 63 times [2023-08-25 05:23:51,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:51,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095402237] [2023-08-25 05:23:51,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:51,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:52,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:52,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095402237] [2023-08-25 05:23:52,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095402237] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:23:52,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133696856] [2023-08-25 05:23:52,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:23:52,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:23:52,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:23:52,232 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) [2023-08-25 05:23:52,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2023-08-25 05:23:52,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 05:23:52,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:23:52,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:23:52,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:23:52,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:52,686 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:23:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:52,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133696856] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:23:52,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:23:52,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-25 05:23:52,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493259736] [2023-08-25 05:23:52,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:23:52,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:23:52,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:52,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:23:52,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:23:52,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:23:52,909 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) [2023-08-25 05:23:52,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:52,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:23:52,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:24:00,313 INFO L124 PetriNetUnfolderBase]: 5905/11315 cut-off events. [2023-08-25 05:24:00,313 INFO L125 PetriNetUnfolderBase]: For 672989/673002 co-relation queries the response was YES. [2023-08-25 05:24:00,488 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. [2023-08-25 05:24:00,546 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1550 selfloop transitions, 186 changer transitions 30/1783 dead transitions. [2023-08-25 05:24:00,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 1783 transitions, 55967 flow [2023-08-25 05:24:00,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 05:24:00,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 05:24:00,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5040 transitions. [2023-08-25 05:24:00,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38855909336211547 [2023-08-25 05:24:00,550 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5040 transitions. [2023-08-25 05:24:00,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5040 transitions. [2023-08-25 05:24:00,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:24:00,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5040 transitions. [2023-08-25 05:24:00,553 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) [2023-08-25 05:24:00,558 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) [2023-08-25 05:24:00,559 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) [2023-08-25 05:24:00,559 INFO L175 Difference]: Start difference. First operand has 674 places, 1554 transitions, 46418 flow. Second operand 17 states and 5040 transitions. [2023-08-25 05:24:00,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 1783 transitions, 55967 flow [2023-08-25 05:24:08,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 1783 transitions, 55729 flow, removed 119 selfloop flow, removed 1 redundant places. [2023-08-25 05:24:09,001 INFO L231 Difference]: Finished difference. Result has 695 places, 1637 transitions, 49528 flow [2023-08-25 05:24:09,003 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} [2023-08-25 05:24:09,003 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 637 predicate places. [2023-08-25 05:24:09,003 INFO L495 AbstractCegarLoop]: Abstraction has has 695 places, 1637 transitions, 49528 flow [2023-08-25 05:24:09,004 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) [2023-08-25 05:24:09,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:24:09,004 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] [2023-08-25 05:24:09,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2023-08-25 05:24:09,210 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 [2023-08-25 05:24:09,210 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:24:09,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:24:09,210 INFO L85 PathProgramCache]: Analyzing trace with hash -562509874, now seen corresponding path program 64 times [2023-08-25 05:24:09,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:24:09,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994832354] [2023-08-25 05:24:09,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:24:09,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:24:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:24:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:09,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:24:09,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994832354] [2023-08-25 05:24:09,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994832354] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:24:09,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283339717] [2023-08-25 05:24:09,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:24:09,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:24:09,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:24:09,783 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) [2023-08-25 05:24:09,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2023-08-25 05:24:10,030 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:24:10,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:24:10,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:24:10,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:24:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:10,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:24:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:10,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283339717] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:24:10,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:24:10,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-25 05:24:10,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113811229] [2023-08-25 05:24:10,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:24:10,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 05:24:10,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:24:10,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 05:24:10,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2023-08-25 05:24:10,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:24:10,462 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) [2023-08-25 05:24:10,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:24:10,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:24:10,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:24:18,019 INFO L124 PetriNetUnfolderBase]: 5978/11456 cut-off events. [2023-08-25 05:24:18,019 INFO L125 PetriNetUnfolderBase]: For 701439/701452 co-relation queries the response was YES. [2023-08-25 05:24:18,187 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. [2023-08-25 05:24:18,242 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1542 selfloop transitions, 223 changer transitions 14/1796 dead transitions. [2023-08-25 05:24:18,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 1796 transitions, 57021 flow [2023-08-25 05:24:18,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 05:24:18,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 05:24:18,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4751 transitions. [2023-08-25 05:24:18,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891710353866317 [2023-08-25 05:24:18,245 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4751 transitions. [2023-08-25 05:24:18,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4751 transitions. [2023-08-25 05:24:18,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:24:18,246 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4751 transitions. [2023-08-25 05:24:18,249 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) [2023-08-25 05:24:18,253 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) [2023-08-25 05:24:18,254 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) [2023-08-25 05:24:18,254 INFO L175 Difference]: Start difference. First operand has 695 places, 1637 transitions, 49528 flow. Second operand 16 states and 4751 transitions. [2023-08-25 05:24:18,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 1796 transitions, 57021 flow [2023-08-25 05:24:27,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 1796 transitions, 56262 flow, removed 323 selfloop flow, removed 4 redundant places. [2023-08-25 05:24:27,994 INFO L231 Difference]: Finished difference. Result has 709 places, 1670 transitions, 50618 flow [2023-08-25 05:24:27,995 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} [2023-08-25 05:24:27,995 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 651 predicate places. [2023-08-25 05:24:27,995 INFO L495 AbstractCegarLoop]: Abstraction has has 709 places, 1670 transitions, 50618 flow [2023-08-25 05:24:27,996 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) [2023-08-25 05:24:27,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:24:27,996 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] [2023-08-25 05:24:28,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2023-08-25 05:24:28,197 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 [2023-08-25 05:24:28,197 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:24:28,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:24:28,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1686108970, now seen corresponding path program 65 times [2023-08-25 05:24:28,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:24:28,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753632093] [2023-08-25 05:24:28,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:24:28,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:24:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:24:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:24:28,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753632093] [2023-08-25 05:24:28,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753632093] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:24:28,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699619537] [2023-08-25 05:24:28,578 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:24:28,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:24:28,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:24:28,581 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) [2023-08-25 05:24:28,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2023-08-25 05:24:28,837 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 05:24:28,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:24:28,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:24:28,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:24:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 05:24:29,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:24:29,321 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:29,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699619537] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:24:29,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:24:29,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2023-08-25 05:24:29,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711920634] [2023-08-25 05:24:29,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:24:29,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 05:24:29,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:24:29,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 05:24:29,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2023-08-25 05:24:29,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:24:29,327 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) [2023-08-25 05:24:29,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:24:29,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:24:29,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:24:37,039 INFO L124 PetriNetUnfolderBase]: 6325/12167 cut-off events. [2023-08-25 05:24:37,039 INFO L125 PetriNetUnfolderBase]: For 754289/754302 co-relation queries the response was YES. [2023-08-25 05:24:37,194 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. [2023-08-25 05:24:37,248 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1507 selfloop transitions, 281 changer transitions 11/1816 dead transitions. [2023-08-25 05:24:37,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 720 places, 1816 transitions, 57878 flow [2023-08-25 05:24:37,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 05:24:37,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 05:24:37,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3865 transitions. [2023-08-25 05:24:37,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38965621534428874 [2023-08-25 05:24:37,251 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3865 transitions. [2023-08-25 05:24:37,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3865 transitions. [2023-08-25 05:24:37,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:24:37,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3865 transitions. [2023-08-25 05:24:37,254 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) [2023-08-25 05:24:37,258 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) [2023-08-25 05:24:37,258 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) [2023-08-25 05:24:37,258 INFO L175 Difference]: Start difference. First operand has 709 places, 1670 transitions, 50618 flow. Second operand 13 states and 3865 transitions. [2023-08-25 05:24:37,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 720 places, 1816 transitions, 57878 flow [2023-08-25 05:24:46,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 713 places, 1816 transitions, 57220 flow, removed 237 selfloop flow, removed 7 redundant places. [2023-08-25 05:24:46,669 INFO L231 Difference]: Finished difference. Result has 721 places, 1721 transitions, 52810 flow [2023-08-25 05:24:46,671 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} [2023-08-25 05:24:46,671 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 663 predicate places. [2023-08-25 05:24:46,671 INFO L495 AbstractCegarLoop]: Abstraction has has 721 places, 1721 transitions, 52810 flow [2023-08-25 05:24:46,672 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) [2023-08-25 05:24:46,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:24:46,672 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] [2023-08-25 05:24:46,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2023-08-25 05:24:46,878 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 [2023-08-25 05:24:46,879 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:24:46,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:24:46,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1226283890, now seen corresponding path program 66 times [2023-08-25 05:24:46,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:24:46,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543204187] [2023-08-25 05:24:46,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:24:46,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:24:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:24:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:47,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:24:47,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543204187] [2023-08-25 05:24:47,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543204187] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:24:47,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857251015] [2023-08-25 05:24:47,345 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:24:47,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:24:47,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:24:47,346 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) [2023-08-25 05:24:47,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2023-08-25 05:24:47,618 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 05:24:47,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:24:47,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:24:47,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:24:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:47,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:24:48,071 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:48,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857251015] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:24:48,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:24:48,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-25 05:24:48,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717167025] [2023-08-25 05:24:48,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:24:48,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 05:24:48,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:24:48,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 05:24:48,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2023-08-25 05:24:48,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:24:48,076 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) [2023-08-25 05:24:48,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:24:48,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:24:48,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:24:56,283 INFO L124 PetriNetUnfolderBase]: 6333/12189 cut-off events. [2023-08-25 05:24:56,283 INFO L125 PetriNetUnfolderBase]: For 788972/788985 co-relation queries the response was YES. [2023-08-25 05:24:56,447 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. [2023-08-25 05:24:56,504 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1599 selfloop transitions, 222 changer transitions 15/1853 dead transitions. [2023-08-25 05:24:56,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 737 places, 1853 transitions, 59391 flow [2023-08-25 05:24:56,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 05:24:56,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 05:24:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5333 transitions. [2023-08-25 05:24:56,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38830639289354885 [2023-08-25 05:24:56,507 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5333 transitions. [2023-08-25 05:24:56,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5333 transitions. [2023-08-25 05:24:56,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:24:56,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5333 transitions. [2023-08-25 05:24:56,511 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) [2023-08-25 05:24:56,515 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) [2023-08-25 05:24:56,516 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) [2023-08-25 05:24:56,516 INFO L175 Difference]: Start difference. First operand has 721 places, 1721 transitions, 52810 flow. Second operand 18 states and 5333 transitions. [2023-08-25 05:24:56,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 737 places, 1853 transitions, 59391 flow [2023-08-25 05:25:06,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 1853 transitions, 59000 flow, removed 190 selfloop flow, removed 3 redundant places. [2023-08-25 05:25:06,862 INFO L231 Difference]: Finished difference. Result has 738 places, 1728 transitions, 53197 flow [2023-08-25 05:25:06,863 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} [2023-08-25 05:25:06,863 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 680 predicate places. [2023-08-25 05:25:06,863 INFO L495 AbstractCegarLoop]: Abstraction has has 738 places, 1728 transitions, 53197 flow [2023-08-25 05:25:06,864 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) [2023-08-25 05:25:06,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:25:06,864 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] [2023-08-25 05:25:06,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2023-08-25 05:25:07,064 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 [2023-08-25 05:25:07,064 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:25:07,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:25:07,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1230586440, now seen corresponding path program 67 times [2023-08-25 05:25:07,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:25:07,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359567627] [2023-08-25 05:25:07,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:25:07,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:25:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:25:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:07,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:25:07,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359567627] [2023-08-25 05:25:07,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359567627] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:25:07,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270112452] [2023-08-25 05:25:07,468 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:25:07,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:25:07,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:25:07,469 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) [2023-08-25 05:25:07,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2023-08-25 05:25:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:25:07,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:25:07,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:25:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:07,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:25:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:08,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270112452] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:25:08,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:25:08,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-25 05:25:08,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896658333] [2023-08-25 05:25:08,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:25:08,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 05:25:08,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:25:08,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 05:25:08,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2023-08-25 05:25:08,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:25:08,147 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) [2023-08-25 05:25:08,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:25:08,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:25:08,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:25:16,148 INFO L124 PetriNetUnfolderBase]: 6332/12177 cut-off events. [2023-08-25 05:25:16,148 INFO L125 PetriNetUnfolderBase]: For 774180/774193 co-relation queries the response was YES. [2023-08-25 05:25:16,322 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. [2023-08-25 05:25:16,379 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1571 selfloop transitions, 220 changer transitions 39/1847 dead transitions. [2023-08-25 05:25:16,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 751 places, 1847 transitions, 59570 flow [2023-08-25 05:25:16,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 05:25:16,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 05:25:16,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4455 transitions. [2023-08-25 05:25:16,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3892529488859764 [2023-08-25 05:25:16,383 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4455 transitions. [2023-08-25 05:25:16,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4455 transitions. [2023-08-25 05:25:16,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:25:16,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4455 transitions. [2023-08-25 05:25:16,386 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) [2023-08-25 05:25:16,390 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) [2023-08-25 05:25:16,391 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) [2023-08-25 05:25:16,391 INFO L175 Difference]: Start difference. First operand has 738 places, 1728 transitions, 53197 flow. Second operand 15 states and 4455 transitions. [2023-08-25 05:25:16,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 751 places, 1847 transitions, 59570 flow [2023-08-25 05:25:26,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 742 places, 1847 transitions, 59189 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-08-25 05:25:26,183 INFO L231 Difference]: Finished difference. Result has 748 places, 1724 transitions, 53155 flow [2023-08-25 05:25:26,184 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} [2023-08-25 05:25:26,185 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 690 predicate places. [2023-08-25 05:25:26,185 INFO L495 AbstractCegarLoop]: Abstraction has has 748 places, 1724 transitions, 53155 flow [2023-08-25 05:25:26,185 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) [2023-08-25 05:25:26,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:25:26,186 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] [2023-08-25 05:25:26,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2023-08-25 05:25:26,386 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 [2023-08-25 05:25:26,386 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:25:26,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:25:26,386 INFO L85 PathProgramCache]: Analyzing trace with hash -813619742, now seen corresponding path program 68 times [2023-08-25 05:25:26,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:25:26,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699239966] [2023-08-25 05:25:26,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:25:26,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:25:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:25:26,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:26,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:25:26,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699239966] [2023-08-25 05:25:26,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699239966] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:25:26,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883500724] [2023-08-25 05:25:26,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:25:26,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:25:26,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:25:26,783 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) [2023-08-25 05:25:26,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2023-08-25 05:25:26,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:25:26,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:25:26,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:25:26,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:25:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:27,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:25:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:27,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883500724] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:25:27,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:25:27,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-25 05:25:27,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495873602] [2023-08-25 05:25:27,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:25:27,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 05:25:27,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:25:27,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 05:25:27,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-08-25 05:25:27,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:25:27,382 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) [2023-08-25 05:25:27,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:25:27,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:25:27,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:25:35,626 INFO L124 PetriNetUnfolderBase]: 6296/12109 cut-off events. [2023-08-25 05:25:35,626 INFO L125 PetriNetUnfolderBase]: For 764541/764554 co-relation queries the response was YES. [2023-08-25 05:25:35,806 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. [2023-08-25 05:25:35,864 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1629 selfloop transitions, 158 changer transitions 26/1830 dead transitions. [2023-08-25 05:25:35,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 761 places, 1830 transitions, 59420 flow [2023-08-25 05:25:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 05:25:35,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 05:25:35,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4729 transitions. [2023-08-25 05:25:35,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38736893840104847 [2023-08-25 05:25:35,867 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4729 transitions. [2023-08-25 05:25:35,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4729 transitions. [2023-08-25 05:25:35,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:25:35,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4729 transitions. [2023-08-25 05:25:35,870 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) [2023-08-25 05:25:35,874 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) [2023-08-25 05:25:35,875 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) [2023-08-25 05:25:35,875 INFO L175 Difference]: Start difference. First operand has 748 places, 1724 transitions, 53155 flow. Second operand 16 states and 4729 transitions. [2023-08-25 05:25:35,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 761 places, 1830 transitions, 59420 flow [2023-08-25 05:25:46,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 1830 transitions, 58906 flow, removed 57 selfloop flow, removed 10 redundant places. [2023-08-25 05:25:46,416 INFO L231 Difference]: Finished difference. Result has 756 places, 1743 transitions, 53794 flow [2023-08-25 05:25:46,417 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} [2023-08-25 05:25:46,417 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 698 predicate places. [2023-08-25 05:25:46,417 INFO L495 AbstractCegarLoop]: Abstraction has has 756 places, 1743 transitions, 53794 flow [2023-08-25 05:25:46,418 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) [2023-08-25 05:25:46,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:25:46,418 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] [2023-08-25 05:25:46,422 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2023-08-25 05:25:46,618 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 [2023-08-25 05:25:46,618 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:25:46,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:25:46,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1548062352, now seen corresponding path program 69 times [2023-08-25 05:25:46,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:25:46,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260922100] [2023-08-25 05:25:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:25:46,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:25:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:25:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:46,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:25:46,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260922100] [2023-08-25 05:25:46,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260922100] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:25:46,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462876065] [2023-08-25 05:25:46,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:25:46,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:25:46,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:25:46,917 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) [2023-08-25 05:25:46,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2023-08-25 05:25:47,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 05:25:47,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:25:47,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:25:47,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:25:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 05:25:47,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:25:47,531 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:47,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462876065] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:25:47,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:25:47,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 19 [2023-08-25 05:25:47,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015920416] [2023-08-25 05:25:47,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:25:47,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 05:25:47,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:25:47,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 05:25:47,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2023-08-25 05:25:47,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:25:47,536 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) [2023-08-25 05:25:47,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:25:47,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:25:47,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:25:55,677 INFO L124 PetriNetUnfolderBase]: 6311/12115 cut-off events. [2023-08-25 05:25:55,677 INFO L125 PetriNetUnfolderBase]: For 767469/767482 co-relation queries the response was YES. [2023-08-25 05:25:55,842 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. [2023-08-25 05:25:55,894 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1505 selfloop transitions, 286 changer transitions 26/1834 dead transitions. [2023-08-25 05:25:55,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 767 places, 1834 transitions, 59260 flow [2023-08-25 05:25:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 05:25:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 05:25:55,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3862 transitions. [2023-08-25 05:25:55,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3893537655005545 [2023-08-25 05:25:55,897 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3862 transitions. [2023-08-25 05:25:55,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3862 transitions. [2023-08-25 05:25:55,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:25:55,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3862 transitions. [2023-08-25 05:25:55,900 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) [2023-08-25 05:25:55,904 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) [2023-08-25 05:25:55,904 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) [2023-08-25 05:25:55,904 INFO L175 Difference]: Start difference. First operand has 756 places, 1743 transitions, 53794 flow. Second operand 13 states and 3862 transitions. [2023-08-25 05:25:55,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 767 places, 1834 transitions, 59260 flow [2023-08-25 05:26:05,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 759 places, 1834 transitions, 59035 flow, removed 25 selfloop flow, removed 8 redundant places. [2023-08-25 05:26:05,670 INFO L231 Difference]: Finished difference. Result has 766 places, 1754 transitions, 54609 flow [2023-08-25 05:26:05,672 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} [2023-08-25 05:26:05,672 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 708 predicate places. [2023-08-25 05:26:05,672 INFO L495 AbstractCegarLoop]: Abstraction has has 766 places, 1754 transitions, 54609 flow [2023-08-25 05:26:05,673 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) [2023-08-25 05:26:05,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:26:05,673 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] [2023-08-25 05:26:05,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2023-08-25 05:26:05,877 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 [2023-08-25 05:26:05,877 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:26:05,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:26:05,877 INFO L85 PathProgramCache]: Analyzing trace with hash -429276736, now seen corresponding path program 70 times [2023-08-25 05:26:05,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:26:05,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345631062] [2023-08-25 05:26:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:26:05,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:26:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:26:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:26:06,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:26:06,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345631062] [2023-08-25 05:26:06,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345631062] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:26:06,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114151404] [2023-08-25 05:26:06,179 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:26:06,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:26:06,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:26:06,180 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) [2023-08-25 05:26:06,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2023-08-25 05:26:06,392 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:26:06,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:26:06,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:26:06,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:26:06,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 05:26:06,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:26:06,799 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:26:06,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114151404] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:26:06,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:26:06,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2023-08-25 05:26:06,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225126924] [2023-08-25 05:26:06,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:26:06,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 05:26:06,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:26:06,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 05:26:06,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-08-25 05:26:06,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:26:06,805 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) [2023-08-25 05:26:06,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:26:06,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:26:06,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:26:15,186 INFO L124 PetriNetUnfolderBase]: 6285/12078 cut-off events. [2023-08-25 05:26:15,187 INFO L125 PetriNetUnfolderBase]: For 780745/780762 co-relation queries the response was YES. [2023-08-25 05:26:15,384 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. [2023-08-25 05:26:15,447 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1489 selfloop transitions, 344 changer transitions 18/1868 dead transitions. [2023-08-25 05:26:15,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 776 places, 1868 transitions, 61044 flow [2023-08-25 05:26:15,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 05:26:15,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 05:26:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3868 transitions. [2023-08-25 05:26:15,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38995866518802297 [2023-08-25 05:26:15,450 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3868 transitions. [2023-08-25 05:26:15,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3868 transitions. [2023-08-25 05:26:15,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:26:15,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3868 transitions. [2023-08-25 05:26:15,452 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) [2023-08-25 05:26:15,456 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) [2023-08-25 05:26:15,457 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) [2023-08-25 05:26:15,457 INFO L175 Difference]: Start difference. First operand has 766 places, 1754 transitions, 54609 flow. Second operand 13 states and 3868 transitions. [2023-08-25 05:26:15,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 776 places, 1868 transitions, 61044 flow [2023-08-25 05:26:26,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 769 places, 1868 transitions, 60481 flow, removed 85 selfloop flow, removed 7 redundant places. [2023-08-25 05:26:26,047 INFO L231 Difference]: Finished difference. Result has 772 places, 1769 transitions, 55472 flow [2023-08-25 05:26:26,049 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} [2023-08-25 05:26:26,049 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 714 predicate places. [2023-08-25 05:26:26,049 INFO L495 AbstractCegarLoop]: Abstraction has has 772 places, 1769 transitions, 55472 flow [2023-08-25 05:26:26,050 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) [2023-08-25 05:26:26,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:26:26,051 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] [2023-08-25 05:26:26,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2023-08-25 05:26:26,256 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 [2023-08-25 05:26:26,256 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:26:26,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:26:26,257 INFO L85 PathProgramCache]: Analyzing trace with hash 234991752, now seen corresponding path program 71 times [2023-08-25 05:26:26,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:26:26,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583923973] [2023-08-25 05:26:26,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:26:26,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:26:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:26:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:26:26,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:26:26,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583923973] [2023-08-25 05:26:26,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583923973] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:26:26,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896576565] [2023-08-25 05:26:26,636 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:26:26,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:26:26,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:26:26,637 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) [2023-08-25 05:26:26,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2023-08-25 05:26:26,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 05:26:26,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:26:26,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:26:26,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:26:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 05:26:27,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:26:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:26:27,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896576565] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:26:27,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:26:27,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 22 [2023-08-25 05:26:27,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274607510] [2023-08-25 05:26:27,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:26:27,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 05:26:27,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:26:27,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 05:26:27,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-08-25 05:26:27,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:26:27,297 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) [2023-08-25 05:26:27,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:26:27,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:26:27,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:26:35,612 INFO L124 PetriNetUnfolderBase]: 6284/12071 cut-off events. [2023-08-25 05:26:35,612 INFO L125 PetriNetUnfolderBase]: For 795892/795905 co-relation queries the response was YES. [2023-08-25 05:26:35,781 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. [2023-08-25 05:26:35,836 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1482 selfloop transitions, 340 changer transitions 21/1860 dead transitions. [2023-08-25 05:26:35,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 782 places, 1860 transitions, 61242 flow [2023-08-25 05:26:35,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 05:26:35,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 05:26:35,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3573 transitions. [2023-08-25 05:26:35,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3902359108781127 [2023-08-25 05:26:35,838 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3573 transitions. [2023-08-25 05:26:35,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3573 transitions. [2023-08-25 05:26:35,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:26:35,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3573 transitions. [2023-08-25 05:26:35,840 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) [2023-08-25 05:26:35,844 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) [2023-08-25 05:26:35,844 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) [2023-08-25 05:26:35,844 INFO L175 Difference]: Start difference. First operand has 772 places, 1769 transitions, 55472 flow. Second operand 12 states and 3573 transitions. [2023-08-25 05:26:35,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 782 places, 1860 transitions, 61242 flow [2023-08-25 05:26:46,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 773 places, 1860 transitions, 60591 flow, removed 91 selfloop flow, removed 9 redundant places. [2023-08-25 05:26:46,240 INFO L231 Difference]: Finished difference. Result has 776 places, 1771 transitions, 55758 flow [2023-08-25 05:26:46,241 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} [2023-08-25 05:26:46,241 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 718 predicate places. [2023-08-25 05:26:46,241 INFO L495 AbstractCegarLoop]: Abstraction has has 776 places, 1771 transitions, 55758 flow [2023-08-25 05:26:46,242 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) [2023-08-25 05:26:46,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:26:46,242 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] [2023-08-25 05:26:46,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2023-08-25 05:26:46,442 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 [2023-08-25 05:26:46,443 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:26:46,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:26:46,443 INFO L85 PathProgramCache]: Analyzing trace with hash -700721266, now seen corresponding path program 72 times [2023-08-25 05:26:46,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:26:46,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58737129] [2023-08-25 05:26:46,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:26:46,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:26:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:26:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:26:46,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:26:46,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58737129] [2023-08-25 05:26:46,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58737129] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:26:46,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884474826] [2023-08-25 05:26:46,748 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:26:46,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:26:46,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:26:46,749 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) [2023-08-25 05:26:46,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2023-08-25 05:26:46,977 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-25 05:26:46,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:26:46,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:26:46,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:26:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 05:26:47,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:26:47,376 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:26:47,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884474826] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:26:47,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:26:47,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 20 [2023-08-25 05:26:47,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156274019] [2023-08-25 05:26:47,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:26:47,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:26:47,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:26:47,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:26:47,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:26:47,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:26:47,381 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) [2023-08-25 05:26:47,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:26:47,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:26:47,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:26:55,646 INFO L124 PetriNetUnfolderBase]: 6305/12149 cut-off events. [2023-08-25 05:26:55,646 INFO L125 PetriNetUnfolderBase]: For 774320/774333 co-relation queries the response was YES. [2023-08-25 05:26:55,849 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. [2023-08-25 05:26:55,912 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1524 selfloop transitions, 289 changer transitions 36/1866 dead transitions. [2023-08-25 05:26:55,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 1866 transitions, 61618 flow [2023-08-25 05:26:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 05:26:55,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 05:26:55,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4444 transitions. [2023-08-25 05:26:55,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38829183049366534 [2023-08-25 05:26:55,915 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4444 transitions. [2023-08-25 05:26:55,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4444 transitions. [2023-08-25 05:26:55,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:26:55,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4444 transitions. [2023-08-25 05:26:55,918 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) [2023-08-25 05:26:55,923 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) [2023-08-25 05:26:55,923 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) [2023-08-25 05:26:55,923 INFO L175 Difference]: Start difference. First operand has 776 places, 1771 transitions, 55758 flow. Second operand 15 states and 4444 transitions. [2023-08-25 05:26:55,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 789 places, 1866 transitions, 61618 flow [2023-08-25 05:27:06,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 781 places, 1866 transitions, 61064 flow, removed 21 selfloop flow, removed 8 redundant places. [2023-08-25 05:27:06,228 INFO L231 Difference]: Finished difference. Result has 785 places, 1772 transitions, 56036 flow [2023-08-25 05:27:06,228 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} [2023-08-25 05:27:06,229 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 727 predicate places. [2023-08-25 05:27:06,229 INFO L495 AbstractCegarLoop]: Abstraction has has 785 places, 1772 transitions, 56036 flow [2023-08-25 05:27:06,229 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) [2023-08-25 05:27:06,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:27:06,230 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] [2023-08-25 05:27:06,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2023-08-25 05:27:06,430 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 [2023-08-25 05:27:06,430 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:27:06,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:27:06,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1211025270, now seen corresponding path program 73 times [2023-08-25 05:27:06,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:27:06,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011410278] [2023-08-25 05:27:06,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:27:06,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:27:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:27:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:27:06,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:27:06,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011410278] [2023-08-25 05:27:06,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011410278] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:27:06,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140933412] [2023-08-25 05:27:06,758 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:27:06,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:27:06,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:27:06,761 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) [2023-08-25 05:27:06,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2023-08-25 05:27:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:27:07,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:27:07,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:27:07,196 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:27:07,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:27:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:27:07,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140933412] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:27:07,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:27:07,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-25 05:27:07,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210216843] [2023-08-25 05:27:07,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:27:07,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 05:27:07,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:27:07,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 05:27:07,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-08-25 05:27:07,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:27:07,398 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) [2023-08-25 05:27:07,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:27:07,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:27:07,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:27:16,110 INFO L124 PetriNetUnfolderBase]: 6362/12264 cut-off events. [2023-08-25 05:27:16,110 INFO L125 PetriNetUnfolderBase]: For 797440/797453 co-relation queries the response was YES. [2023-08-25 05:27:16,284 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. [2023-08-25 05:27:16,341 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1732 selfloop transitions, 87 changer transitions 6/1842 dead transitions. [2023-08-25 05:27:16,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 797 places, 1842 transitions, 61210 flow [2023-08-25 05:27:16,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 05:27:16,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 05:27:16,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4120 transitions. [2023-08-25 05:27:16,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38569556262872123 [2023-08-25 05:27:16,343 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4120 transitions. [2023-08-25 05:27:16,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4120 transitions. [2023-08-25 05:27:16,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:27:16,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4120 transitions. [2023-08-25 05:27:16,346 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) [2023-08-25 05:27:16,350 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) [2023-08-25 05:27:16,350 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) [2023-08-25 05:27:16,350 INFO L175 Difference]: Start difference. First operand has 785 places, 1772 transitions, 56036 flow. Second operand 14 states and 4120 transitions. [2023-08-25 05:27:16,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 797 places, 1842 transitions, 61210 flow [2023-08-25 05:27:26,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 787 places, 1842 transitions, 60502 flow, removed 61 selfloop flow, removed 10 redundant places. [2023-08-25 05:27:27,010 INFO L231 Difference]: Finished difference. Result has 794 places, 1810 transitions, 56773 flow [2023-08-25 05:27:27,011 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} [2023-08-25 05:27:27,011 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 736 predicate places. [2023-08-25 05:27:27,011 INFO L495 AbstractCegarLoop]: Abstraction has has 794 places, 1810 transitions, 56773 flow [2023-08-25 05:27:27,012 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) [2023-08-25 05:27:27,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:27:27,012 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] [2023-08-25 05:27:27,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2023-08-25 05:27:27,212 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 [2023-08-25 05:27:27,212 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:27:27,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:27:27,213 INFO L85 PathProgramCache]: Analyzing trace with hash -292151728, now seen corresponding path program 74 times [2023-08-25 05:27:27,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:27:27,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593752244] [2023-08-25 05:27:27,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:27:27,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:27:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:27:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:27:27,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:27:27,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593752244] [2023-08-25 05:27:27,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593752244] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:27:27,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853914747] [2023-08-25 05:27:27,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:27:27,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:27:27,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:27:27,543 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) [2023-08-25 05:27:27,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2023-08-25 05:27:27,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:27:27,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:27:27,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:27:27,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:27:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:27:27,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:27:28,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:27:28,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853914747] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:27:28,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:27:28,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-25 05:27:28,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853923370] [2023-08-25 05:27:28,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:27:28,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 05:27:28,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:27:28,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 05:27:28,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-08-25 05:27:28,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:27:28,257 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) [2023-08-25 05:27:28,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:27:28,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:27:28,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:27:38,564 INFO L124 PetriNetUnfolderBase]: 6829/13155 cut-off events. [2023-08-25 05:27:38,564 INFO L125 PetriNetUnfolderBase]: For 894114/894131 co-relation queries the response was YES. [2023-08-25 05:27:38,787 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. [2023-08-25 05:27:38,853 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1633 selfloop transitions, 378 changer transitions 17/2045 dead transitions. [2023-08-25 05:27:38,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 811 places, 2045 transitions, 67228 flow [2023-08-25 05:27:38,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-25 05:27:38,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-25 05:27:38,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5631 transitions. [2023-08-25 05:27:38,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38842519141891424 [2023-08-25 05:27:38,857 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5631 transitions. [2023-08-25 05:27:38,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5631 transitions. [2023-08-25 05:27:38,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:27:38,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5631 transitions. [2023-08-25 05:27:38,860 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) [2023-08-25 05:27:38,865 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) [2023-08-25 05:27:38,866 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) [2023-08-25 05:27:38,866 INFO L175 Difference]: Start difference. First operand has 794 places, 1810 transitions, 56773 flow. Second operand 19 states and 5631 transitions. [2023-08-25 05:27:38,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 811 places, 2045 transitions, 67228 flow [2023-08-25 05:27:51,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 809 places, 2045 transitions, 66944 flow, removed 136 selfloop flow, removed 2 redundant places. [2023-08-25 05:27:51,486 INFO L231 Difference]: Finished difference. Result has 815 places, 1910 transitions, 61187 flow [2023-08-25 05:27:51,487 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} [2023-08-25 05:27:51,487 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 757 predicate places. [2023-08-25 05:27:51,487 INFO L495 AbstractCegarLoop]: Abstraction has has 815 places, 1910 transitions, 61187 flow [2023-08-25 05:27:51,488 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) [2023-08-25 05:27:51,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:27:51,488 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] [2023-08-25 05:27:51,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2023-08-25 05:27:51,695 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 [2023-08-25 05:27:51,695 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:27:51,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:27:51,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1376601324, now seen corresponding path program 75 times [2023-08-25 05:27:51,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:27:51,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576067648] [2023-08-25 05:27:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:27:51,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:27:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:27:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:27:51,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:27:51,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576067648] [2023-08-25 05:27:51,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576067648] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:27:51,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650692090] [2023-08-25 05:27:51,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:27:51,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:27:51,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:27:51,997 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) [2023-08-25 05:27:51,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2023-08-25 05:27:52,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 05:27:52,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:27:52,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:27:52,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:27:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:27:52,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:27:52,628 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:27:52,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650692090] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:27:52,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:27:52,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-08-25 05:27:52,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066137530] [2023-08-25 05:27:52,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:27:52,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 05:27:52,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:27:52,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 05:27:52,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-08-25 05:27:52,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:27:52,632 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) [2023-08-25 05:27:52,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:27:52,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:27:52,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:28:02,373 INFO L124 PetriNetUnfolderBase]: 6839/13189 cut-off events. [2023-08-25 05:28:02,373 INFO L125 PetriNetUnfolderBase]: For 932412/932429 co-relation queries the response was YES. [2023-08-25 05:28:02,588 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. [2023-08-25 05:28:02,652 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1823 selfloop transitions, 120 changer transitions 6/1966 dead transitions. [2023-08-25 05:28:02,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 827 places, 1966 transitions, 66372 flow [2023-08-25 05:28:02,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 05:28:02,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 05:28:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4125 transitions. [2023-08-25 05:28:02,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38616363976783374 [2023-08-25 05:28:02,655 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4125 transitions. [2023-08-25 05:28:02,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4125 transitions. [2023-08-25 05:28:02,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:28:02,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4125 transitions. [2023-08-25 05:28:02,658 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) [2023-08-25 05:28:02,662 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) [2023-08-25 05:28:02,662 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) [2023-08-25 05:28:02,662 INFO L175 Difference]: Start difference. First operand has 815 places, 1910 transitions, 61187 flow. Second operand 14 states and 4125 transitions. [2023-08-25 05:28:02,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 827 places, 1966 transitions, 66372 flow [2023-08-25 05:28:16,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 819 places, 1966 transitions, 65181 flow, removed 507 selfloop flow, removed 8 redundant places. [2023-08-25 05:28:16,619 INFO L231 Difference]: Finished difference. Result has 824 places, 1926 transitions, 61018 flow [2023-08-25 05:28:16,620 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} [2023-08-25 05:28:16,620 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 766 predicate places. [2023-08-25 05:28:16,620 INFO L495 AbstractCegarLoop]: Abstraction has has 824 places, 1926 transitions, 61018 flow [2023-08-25 05:28:16,621 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) [2023-08-25 05:28:16,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:28:16,621 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] [2023-08-25 05:28:16,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2023-08-25 05:28:16,821 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 [2023-08-25 05:28:16,822 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:28:16,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:28:16,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1021807694, now seen corresponding path program 76 times [2023-08-25 05:28:16,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:28:16,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339337671] [2023-08-25 05:28:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:28:16,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:28:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:28:17,163 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:28:17,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:28:17,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339337671] [2023-08-25 05:28:17,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339337671] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:28:17,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422806353] [2023-08-25 05:28:17,164 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:28:17,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:28:17,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:28:17,169 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) [2023-08-25 05:28:17,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2023-08-25 05:28:17,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:28:17,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:28:17,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:28:17,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:28:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:28:17,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:28:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:28:17,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422806353] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:28:17,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:28:17,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-25 05:28:17,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693914395] [2023-08-25 05:28:17,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:28:17,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-25 05:28:17,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:28:17,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-25 05:28:17,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2023-08-25 05:28:17,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:28:17,804 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) [2023-08-25 05:28:17,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:28:17,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:28:17,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:28:28,076 INFO L124 PetriNetUnfolderBase]: 6852/13220 cut-off events. [2023-08-25 05:28:28,076 INFO L125 PetriNetUnfolderBase]: For 924863/924880 co-relation queries the response was YES. [2023-08-25 05:28:28,305 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. [2023-08-25 05:28:28,602 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1624 selfloop transitions, 405 changer transitions 14/2060 dead transitions. [2023-08-25 05:28:28,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 837 places, 2060 transitions, 68357 flow [2023-08-25 05:28:28,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-25 05:28:28,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-25 05:28:28,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4460 transitions. [2023-08-25 05:28:28,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38968982088248144 [2023-08-25 05:28:28,605 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4460 transitions. [2023-08-25 05:28:28,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4460 transitions. [2023-08-25 05:28:28,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:28:28,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4460 transitions. [2023-08-25 05:28:28,607 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) [2023-08-25 05:28:28,612 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) [2023-08-25 05:28:28,612 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) [2023-08-25 05:28:28,612 INFO L175 Difference]: Start difference. First operand has 824 places, 1926 transitions, 61018 flow. Second operand 15 states and 4460 transitions. [2023-08-25 05:28:28,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 837 places, 2060 transitions, 68357 flow [2023-08-25 05:28:42,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 831 places, 2060 transitions, 67968 flow, removed 111 selfloop flow, removed 6 redundant places. [2023-08-25 05:28:42,387 INFO L231 Difference]: Finished difference. Result has 835 places, 1935 transitions, 61923 flow [2023-08-25 05:28:42,388 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} [2023-08-25 05:28:42,388 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 777 predicate places. [2023-08-25 05:28:42,388 INFO L495 AbstractCegarLoop]: Abstraction has has 835 places, 1935 transitions, 61923 flow [2023-08-25 05:28:42,389 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) [2023-08-25 05:28:42,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:28:42,389 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] [2023-08-25 05:28:42,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2023-08-25 05:28:42,589 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 [2023-08-25 05:28:42,590 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:28:42,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:28:42,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1824350442, now seen corresponding path program 77 times [2023-08-25 05:28:42,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:28:42,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287585438] [2023-08-25 05:28:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:28:42,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:28:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:28:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:28:42,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:28:42,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287585438] [2023-08-25 05:28:42,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287585438] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:28:42,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454102843] [2023-08-25 05:28:42,869 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:28:42,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:28:42,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:28:42,870 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) [2023-08-25 05:28:42,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2023-08-25 05:28:43,099 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 05:28:43,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:28:43,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:28:43,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:28:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:28:43,227 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:28:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:28:43,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454102843] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:28:43,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:28:43,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-08-25 05:28:43,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354984339] [2023-08-25 05:28:43,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:28:43,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 05:28:43,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:28:43,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 05:28:43,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-08-25 05:28:43,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:28:43,470 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) [2023-08-25 05:28:43,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:28:43,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:28:43,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:28:53,507 INFO L124 PetriNetUnfolderBase]: 6850/13210 cut-off events. [2023-08-25 05:28:53,507 INFO L125 PetriNetUnfolderBase]: For 929326/929343 co-relation queries the response was YES. [2023-08-25 05:28:53,741 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. [2023-08-25 05:28:53,812 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1621 selfloop transitions, 411 changer transitions 17/2066 dead transitions. [2023-08-25 05:28:53,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 850 places, 2066 transitions, 69101 flow [2023-08-25 05:28:53,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-25 05:28:53,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-25 05:28:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5044 transitions. [2023-08-25 05:28:53,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38886747359494256 [2023-08-25 05:28:53,815 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5044 transitions. [2023-08-25 05:28:53,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5044 transitions. [2023-08-25 05:28:53,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:28:53,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5044 transitions. [2023-08-25 05:28:53,818 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) [2023-08-25 05:28:53,823 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) [2023-08-25 05:28:53,824 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) [2023-08-25 05:28:53,824 INFO L175 Difference]: Start difference. First operand has 835 places, 1935 transitions, 61923 flow. Second operand 17 states and 5044 transitions. [2023-08-25 05:28:53,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 850 places, 2066 transitions, 69101 flow [2023-08-25 05:29:07,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 842 places, 2066 transitions, 68392 flow, removed 105 selfloop flow, removed 8 redundant places. [2023-08-25 05:29:07,652 INFO L231 Difference]: Finished difference. Result has 845 places, 1937 transitions, 62260 flow [2023-08-25 05:29:07,653 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} [2023-08-25 05:29:07,653 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 787 predicate places. [2023-08-25 05:29:07,653 INFO L495 AbstractCegarLoop]: Abstraction has has 845 places, 1937 transitions, 62260 flow [2023-08-25 05:29:07,654 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) [2023-08-25 05:29:07,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:29:07,654 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] [2023-08-25 05:29:07,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2023-08-25 05:29:07,854 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 [2023-08-25 05:29:07,854 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:29:07,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:29:07,855 INFO L85 PathProgramCache]: Analyzing trace with hash -638872134, now seen corresponding path program 78 times [2023-08-25 05:29:07,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:29:07,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909918876] [2023-08-25 05:29:07,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:29:07,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:29:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:29:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:29:08,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:29:08,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909918876] [2023-08-25 05:29:08,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909918876] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:29:08,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555481550] [2023-08-25 05:29:08,217 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:29:08,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:29:08,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:29:08,218 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) [2023-08-25 05:29:08,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2023-08-25 05:29:08,473 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 05:29:08,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:29:08,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-25 05:29:08,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:29:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:29:08,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:29:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:29:08,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555481550] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:29:08,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:29:08,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-25 05:29:08,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111432945] [2023-08-25 05:29:08,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:29:08,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 05:29:08,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:29:08,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 05:29:08,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-08-25 05:29:08,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 763 [2023-08-25 05:29:08,838 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) [2023-08-25 05:29:08,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:29:08,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 763 [2023-08-25 05:29:08,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:29:18,881 INFO L124 PetriNetUnfolderBase]: 6852/13216 cut-off events. [2023-08-25 05:29:18,882 INFO L125 PetriNetUnfolderBase]: For 929999/930016 co-relation queries the response was YES. [2023-08-25 05:29:19,097 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. [2023-08-25 05:29:19,160 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1871 selfloop transitions, 90 changer transitions 6/1984 dead transitions. [2023-08-25 05:29:19,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 857 places, 1984 transitions, 67281 flow [2023-08-25 05:29:19,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 05:29:19,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 05:29:19,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4118 transitions. [2023-08-25 05:29:19,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3855083317730762 [2023-08-25 05:29:19,163 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4118 transitions. [2023-08-25 05:29:19,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4118 transitions. [2023-08-25 05:29:19,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:29:19,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4118 transitions. [2023-08-25 05:29:19,166 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) [2023-08-25 05:29:19,170 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) [2023-08-25 05:29:19,170 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) [2023-08-25 05:29:19,170 INFO L175 Difference]: Start difference. First operand has 845 places, 1937 transitions, 62260 flow. Second operand 14 states and 4118 transitions. [2023-08-25 05:29:19,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 857 places, 1984 transitions, 67281 flow [2023-08-25 05:29:32,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 842 places, 1984 transitions, 66325 flow, removed 51 selfloop flow, removed 15 redundant places. [2023-08-25 05:29:32,951 INFO L231 Difference]: Finished difference. Result has 849 places, 1958 transitions, 62415 flow [2023-08-25 05:29:32,951 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} [2023-08-25 05:29:32,952 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 791 predicate places. [2023-08-25 05:29:32,952 INFO L495 AbstractCegarLoop]: Abstraction has has 849 places, 1958 transitions, 62415 flow [2023-08-25 05:29:32,952 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) [2023-08-25 05:29:32,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:29:32,952 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] [2023-08-25 05:29:32,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2023-08-25 05:29:33,153 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 [2023-08-25 05:29:33,153 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:29:33,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:29:33,153 INFO L85 PathProgramCache]: Analyzing trace with hash 43753420, now seen corresponding path program 79 times [2023-08-25 05:29:33,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:29:33,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486707077] [2023-08-25 05:29:33,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:29:33,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:29:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:29:33,224 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:29:33,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:29:33,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486707077] [2023-08-25 05:29:33,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486707077] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:29:33,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662617751] [2023-08-25 05:29:33,225 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:29:33,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:29:33,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:29:33,226 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) [2023-08-25 05:29:33,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2023-08-25 05:29:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:29:33,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 05:29:33,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:29:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:29:33,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:29:33,556 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:29:33,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662617751] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:29:33,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:29:33,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-25 05:29:33,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27918725] [2023-08-25 05:29:33,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:29:33,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 05:29:33,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:29:33,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 05:29:33,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-25 05:29:33,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:29:33,560 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) [2023-08-25 05:29:33,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:29:33,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:29:33,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:29:47,389 INFO L124 PetriNetUnfolderBase]: 9212/17405 cut-off events. [2023-08-25 05:29:47,389 INFO L125 PetriNetUnfolderBase]: For 1289564/1289575 co-relation queries the response was YES. [2023-08-25 05:29:47,787 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. [2023-08-25 05:29:47,886 INFO L140 encePairwiseOnDemand]: 756/763 looper letters, 1256 selfloop transitions, 1678 changer transitions 14/2952 dead transitions. [2023-08-25 05:29:47,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 884 places, 2952 transitions, 99145 flow [2023-08-25 05:29:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-25 05:29:47,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-25 05:29:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 11448 transitions. [2023-08-25 05:29:47,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055116715667174 [2023-08-25 05:29:47,892 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 11448 transitions. [2023-08-25 05:29:47,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 11448 transitions. [2023-08-25 05:29:47,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:29:47,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 11448 transitions. [2023-08-25 05:29:47,899 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) [2023-08-25 05:29:47,910 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) [2023-08-25 05:29:47,912 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) [2023-08-25 05:29:47,912 INFO L175 Difference]: Start difference. First operand has 849 places, 1958 transitions, 62415 flow. Second operand 37 states and 11448 transitions. [2023-08-25 05:29:47,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 884 places, 2952 transitions, 99145 flow [2023-08-25 05:30:08,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 880 places, 2952 transitions, 98833 flow, removed 113 selfloop flow, removed 4 redundant places. [2023-08-25 05:30:09,056 INFO L231 Difference]: Finished difference. Result has 893 places, 2606 transitions, 91351 flow [2023-08-25 05:30:09,057 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} [2023-08-25 05:30:09,057 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 835 predicate places. [2023-08-25 05:30:09,058 INFO L495 AbstractCegarLoop]: Abstraction has has 893 places, 2606 transitions, 91351 flow [2023-08-25 05:30:09,058 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) [2023-08-25 05:30:09,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:30:09,058 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] [2023-08-25 05:30:09,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2023-08-25 05:30:09,258 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 [2023-08-25 05:30:09,259 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err7ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE (and 50 more)] === [2023-08-25 05:30:09,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:30:09,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1770625864, now seen corresponding path program 80 times [2023-08-25 05:30:09,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:30:09,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465477505] [2023-08-25 05:30:09,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:30:09,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:30:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:30:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:30:09,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:30:09,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465477505] [2023-08-25 05:30:09,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465477505] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:30:09,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952858957] [2023-08-25 05:30:09,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:30:09,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:30:09,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:30:09,349 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) [2023-08-25 05:30:09,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2023-08-25 05:30:09,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:30:09,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:30:09,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 05:30:09,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:30:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:30:09,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:30:09,700 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:30:09,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952858957] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:30:09,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:30:09,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-08-25 05:30:09,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829984500] [2023-08-25 05:30:09,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:30:09,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 05:30:09,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:30:09,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 05:30:09,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-25 05:30:09,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 763 [2023-08-25 05:30:09,704 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) [2023-08-25 05:30:09,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:30:09,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 763 [2023-08-25 05:30:09,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-25 05:30:22,770 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 [2023-08-25 05:30:22,779 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 05:30:23,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 05:30:23,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15ASSERT_VIOLATIONASSERT (53 of 54 remaining) [2023-08-25 05:30:23,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2023-08-25 05:30:23,229 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 [2023-08-25 05:30:23,229 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 conditions per place.). [2023-08-25 05:30:23,231 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (52 of 54 remaining) [2023-08-25 05:30:23,231 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONDATA_RACE (51 of 54 remaining) [2023-08-25 05:30:23,231 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (50 of 54 remaining) [2023-08-25 05:30:23,231 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (49 of 54 remaining) [2023-08-25 05:30:23,231 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONDATA_RACE (48 of 54 remaining) [2023-08-25 05:30:23,231 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (47 of 54 remaining) [2023-08-25 05:30:23,231 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (46 of 54 remaining) [2023-08-25 05:30:23,231 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONDATA_RACE (45 of 54 remaining) [2023-08-25 05:30:23,231 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONDATA_RACE (44 of 54 remaining) [2023-08-25 05:30:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (43 of 54 remaining) [2023-08-25 05:30:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONDATA_RACE (42 of 54 remaining) [2023-08-25 05:30:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (41 of 54 remaining) [2023-08-25 05:30:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (40 of 54 remaining) [2023-08-25 05:30:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONDATA_RACE (39 of 54 remaining) [2023-08-25 05:30:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (38 of 54 remaining) [2023-08-25 05:30:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (37 of 54 remaining) [2023-08-25 05:30:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONDATA_RACE (36 of 54 remaining) [2023-08-25 05:30:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONDATA_RACE (35 of 54 remaining) [2023-08-25 05:30:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (34 of 54 remaining) [2023-08-25 05:30:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (33 of 54 remaining) [2023-08-25 05:30:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (32 of 54 remaining) [2023-08-25 05:30:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (31 of 54 remaining) [2023-08-25 05:30:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (30 of 54 remaining) [2023-08-25 05:30:23,232 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (29 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (28 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (27 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (26 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (25 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (24 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (23 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (22 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE (21 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE (20 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (17 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7ASSERT_VIOLATIONDATA_RACE (16 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (15 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (14 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err8ASSERT_VIOLATIONDATA_RACE (13 of 54 remaining) [2023-08-25 05:30:23,233 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (12 of 54 remaining) [2023-08-25 05:30:23,234 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONDATA_RACE (11 of 54 remaining) [2023-08-25 05:30:23,234 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONDATA_RACE (10 of 54 remaining) [2023-08-25 05:30:23,234 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6ASSERT_VIOLATIONDATA_RACE (9 of 54 remaining) [2023-08-25 05:30:23,234 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (8 of 54 remaining) [2023-08-25 05:30:23,234 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7ASSERT_VIOLATIONDATA_RACE (7 of 54 remaining) [2023-08-25 05:30:23,234 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (6 of 54 remaining) [2023-08-25 05:30:23,234 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (5 of 54 remaining) [2023-08-25 05:30:23,234 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err8ASSERT_VIOLATIONDATA_RACE (4 of 54 remaining) [2023-08-25 05:30:23,234 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (3 of 54 remaining) [2023-08-25 05:30:23,234 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (2 of 54 remaining) [2023-08-25 05:30:23,234 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5ASSERT_VIOLATIONDATA_RACE (1 of 54 remaining) [2023-08-25 05:30:23,235 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6ASSERT_VIOLATIONDATA_RACE (0 of 54 remaining) [2023-08-25 05:30:23,235 INFO L445 BasicCegarLoop]: Path program histogram: [80, 6, 6, 2, 1, 1] [2023-08-25 05:30:23,239 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 05:30:23,239 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 05:30:23,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 05:30:23 BasicIcfg [2023-08-25 05:30:23,242 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 05:30:23,242 INFO L158 Benchmark]: Toolchain (without parser) took 773043.11ms. Allocated memory was 360.7MB in the beginning and 14.4GB in the end (delta: 14.0GB). Free memory was 335.9MB in the beginning and 8.4GB in the end (delta: -8.1GB). Peak memory consumption was 6.3GB. Max. memory is 16.0GB. [2023-08-25 05:30:23,242 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 360.7MB. Free memory is still 338.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 05:30:23,242 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.43ms. Allocated memory is still 360.7MB. Free memory was 335.9MB in the beginning and 323.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-25 05:30:23,243 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.47ms. Allocated memory is still 360.7MB. Free memory was 323.9MB in the beginning and 321.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 05:30:23,243 INFO L158 Benchmark]: Boogie Preprocessor took 53.18ms. Allocated memory is still 360.7MB. Free memory was 321.2MB in the beginning and 319.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 05:30:23,243 INFO L158 Benchmark]: RCFGBuilder took 557.78ms. Allocated memory is still 360.7MB. Free memory was 319.7MB in the beginning and 295.3MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-25 05:30:23,243 INFO L158 Benchmark]: TraceAbstraction took 772181.27ms. Allocated memory was 360.7MB in the beginning and 14.4GB in the end (delta: 14.0GB). Free memory was 294.5MB in the beginning and 8.4GB in the end (delta: -8.1GB). Peak memory consumption was 6.3GB. Max. memory is 16.0GB. [2023-08-25 05:30:23,244 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 360.7MB. Free memory is still 338.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 205.43ms. Allocated memory is still 360.7MB. Free memory was 335.9MB in the beginning and 323.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.47ms. Allocated memory is still 360.7MB. Free memory was 323.9MB in the beginning and 321.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 53.18ms. Allocated memory is still 360.7MB. Free memory was 321.2MB in the beginning and 319.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 557.78ms. Allocated memory is still 360.7MB. Free memory was 319.7MB in the beginning and 295.3MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 772181.27ms. Allocated memory was 360.7MB in the beginning and 14.4GB in the end (delta: 14.0GB). Free memory was 294.5MB in the beginning and 8.4GB in the end (delta: -8.1GB). Peak memory consumption was 6.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.1s, 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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 (14states, 304/763 universal loopers) in iteration 96,while PetriNetUnfolder was constructing finite prefix that currently has 168441 conditions, 13567 events (6977/13566 cut-off events. For 1135161/1135172 co-relation queries the response was YES. Maximal size of possible extension queue 994. Compared 129532 event pairs, 1648 based on Foata normal form. 17/13740 useless extension candidates. Maximal degree in co-relation 168119. Up to 4425 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: 772.0s, OverallIterations: 96, TraceHistogramMax: 4, PathProgramHistogramMax: 80, EmptinessCheckTime: 0.0s, AutomataDifference: 683.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7097 SdHoareTripleChecker+Valid, 23.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7097 mSDsluCounter, 429 SdHoareTripleChecker+Invalid, 20.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 273 mSDsCounter, 399 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47049 IncrementalHoareTripleChecker+Invalid, 47448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 399 mSolverCounterUnsat, 156 mSDtfsCounter, 47049 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5437 GetRequests, 3249 SyntacticMatches, 247 SemanticMatches, 1941 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9500 ImplicationChecksByTransitivity, 21.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91351occurred in iteration=95, InterpolantAutomatonStates: 1259, 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, 4.8s SatisfiabilityAnalysisTime, 44.9s InterpolantComputationTime, 4442 NumberOfCodeBlocks, 4442 NumberOfCodeBlocksAsserted, 314 NumberOfCheckSat, 6301 ConstructedInterpolants, 0 QuantifiedInterpolants, 64677 SizeOfPredicates, 1599 NumberOfNonLiveVariables, 27068 ConjunctsInSsa, 3970 ConjunctsInUnsatCore, 264 InterpolantComputations, 12 PerfectInterpolantSequences, 414/2551 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