/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 18:52:02,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 18:52:02,331 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 18:52:02,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 18:52:02,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 18:52:02,360 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 18:52:02,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 18:52:02,361 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 18:52:02,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 18:52:02,364 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 18:52:02,365 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 18:52:02,365 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 18:52:02,365 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 18:52:02,366 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 18:52:02,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 18:52:02,366 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 18:52:02,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 18:52:02,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 18:52:02,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 18:52:02,367 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 18:52:02,367 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 18:52:02,368 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 18:52:02,368 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 18:52:02,368 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 18:52:02,368 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 18:52:02,369 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 18:52:02,369 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 18:52:02,369 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 18:52:02,369 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 18:52:02,370 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 18:52:02,370 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 18:52:02,370 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 18:52:02,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 18:52:02,371 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 18:52:02,371 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 18:52:02,371 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 18:52:02,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 18:52:02,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 18:52:02,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 18:52:02,606 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 18:52:02,606 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 18:52:02,607 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2023-08-25 18:52:03,485 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 18:52:03,641 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 18:52:03,642 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2023-08-25 18:52:03,647 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593bd9e8f/a5b87f3f0b9249e8a29f8256f4cc93ab/FLAG089df7830 [2023-08-25 18:52:03,655 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593bd9e8f/a5b87f3f0b9249e8a29f8256f4cc93ab [2023-08-25 18:52:03,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 18:52:03,657 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 18:52:03,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 18:52:03,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 18:52:03,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 18:52:03,660 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:52:03" (1/1) ... [2023-08-25 18:52:03,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c2bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:52:03, skipping insertion in model container [2023-08-25 18:52:03,661 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:52:03" (1/1) ... [2023-08-25 18:52:03,677 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 18:52:03,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 18:52:03,831 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 18:52:03,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 18:52:03,881 INFO L206 MainTranslator]: Completed translation [2023-08-25 18:52:03,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:52:03 WrapperNode [2023-08-25 18:52:03,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 18:52:03,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 18:52:03,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 18:52:03,883 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 18:52:03,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:52:03" (1/1) ... [2023-08-25 18:52:03,909 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:52:03" (1/1) ... [2023-08-25 18:52:03,937 INFO L138 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 250 [2023-08-25 18:52:03,938 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 18:52:03,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 18:52:03,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 18:52:03,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 18:52:03,945 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:52:03" (1/1) ... [2023-08-25 18:52:03,945 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:52:03" (1/1) ... [2023-08-25 18:52:03,954 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:52:03" (1/1) ... [2023-08-25 18:52:03,954 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:52:03" (1/1) ... [2023-08-25 18:52:03,967 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:52:03" (1/1) ... [2023-08-25 18:52:03,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:52:03" (1/1) ... [2023-08-25 18:52:03,971 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:52:03" (1/1) ... [2023-08-25 18:52:03,972 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:52:03" (1/1) ... [2023-08-25 18:52:03,984 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 18:52:03,985 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 18:52:03,985 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 18:52:03,985 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 18:52:03,985 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:52:03" (1/1) ... [2023-08-25 18:52:03,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 18:52:03,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 18:52:04,006 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 18:52:04,028 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 18:52:04,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 18:52:04,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 18:52:04,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 18:52:04,039 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 18:52:04,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 18:52:04,039 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-25 18:52:04,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-25 18:52:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-25 18:52:04,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-25 18:52:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 18:52:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-25 18:52:04,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-25 18:52:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-25 18:52:04,040 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-25 18:52:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 18:52:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 18:52:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 18:52:04,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 18:52:04,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 18:52:04,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 18:52:04,042 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 18:52:04,113 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 18:52:04,114 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 18:52:04,437 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 18:52:04,445 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 18:52:04,445 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-25 18:52:04,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:52:04 BoogieIcfgContainer [2023-08-25 18:52:04,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 18:52:04,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 18:52:04,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 18:52:04,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 18:52:04,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 06:52:03" (1/3) ... [2023-08-25 18:52:04,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9be178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:52:04, skipping insertion in model container [2023-08-25 18:52:04,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:52:03" (2/3) ... [2023-08-25 18:52:04,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9be178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:52:04, skipping insertion in model container [2023-08-25 18:52:04,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:52:04" (3/3) ... [2023-08-25 18:52:04,452 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2023-08-25 18:52:04,463 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 18:52:04,463 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2023-08-25 18:52:04,463 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 18:52:04,571 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-25 18:52:04,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 421 places, 423 transitions, 894 flow [2023-08-25 18:52:04,734 INFO L124 PetriNetUnfolderBase]: 21/417 cut-off events. [2023-08-25 18:52:04,734 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 18:52:04,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 417 events. 21/417 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 663 event pairs, 0 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 294. Up to 2 conditions per place. [2023-08-25 18:52:04,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 421 places, 423 transitions, 894 flow [2023-08-25 18:52:04,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 400 transitions, 836 flow [2023-08-25 18:52:04,753 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:52:04,762 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 398 places, 400 transitions, 836 flow [2023-08-25 18:52:04,765 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 398 places, 400 transitions, 836 flow [2023-08-25 18:52:04,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 398 places, 400 transitions, 836 flow [2023-08-25 18:52:04,816 INFO L124 PetriNetUnfolderBase]: 21/400 cut-off events. [2023-08-25 18:52:04,816 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 18:52:04,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 400 events. 21/400 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 661 event pairs, 0 based on Foata normal form. 0/321 useless extension candidates. Maximal degree in co-relation 294. Up to 2 conditions per place. [2023-08-25 18:52:04,832 INFO L119 LiptonReduction]: Number of co-enabled transitions 28704 [2023-08-25 18:52:17,494 INFO L134 LiptonReduction]: Checked pairs total: 61283 [2023-08-25 18:52:17,495 INFO L136 LiptonReduction]: Total number of compositions: 503 [2023-08-25 18:52:17,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 18:52:17,512 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;@46763bd7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:52:17,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 95 error locations. [2023-08-25 18:52:17,513 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:52:17,514 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 18:52:17,514 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 18:52:17,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:52:17,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 18:52:17,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 91 more)] === [2023-08-25 18:52:17,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:52:17,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1572, now seen corresponding path program 1 times [2023-08-25 18:52:17,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:52:17,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485928892] [2023-08-25 18:52:17,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:52:17,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:52:17,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:52:17,592 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 18:52:17,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:52:17,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485928892] [2023-08-25 18:52:17,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485928892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:52:17,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:52:17,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 18:52:17,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212963637] [2023-08-25 18:52:17,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:52:17,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 18:52:17,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:52:17,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 18:52:17,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 18:52:17,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 926 [2023-08-25 18:52:17,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 107 transitions, 250 flow. Second operand has 2 states, 2 states have (on average 402.5) internal successors, (805), 2 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:17,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:52:17,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 926 [2023-08-25 18:52:17,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:52:18,673 INFO L124 PetriNetUnfolderBase]: 14584/17870 cut-off events. [2023-08-25 18:52:18,673 INFO L125 PetriNetUnfolderBase]: For 656/656 co-relation queries the response was YES. [2023-08-25 18:52:18,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36467 conditions, 17870 events. 14584/17870 cut-off events. For 656/656 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 62257 event pairs, 9480 based on Foata normal form. 0/12766 useless extension candidates. Maximal degree in co-relation 28069. Up to 17498 conditions per place. [2023-08-25 18:52:18,763 INFO L140 encePairwiseOnDemand]: 868/926 looper letters, 43 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2023-08-25 18:52:18,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 49 transitions, 220 flow [2023-08-25 18:52:18,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 18:52:18,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 18:52:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 905 transitions. [2023-08-25 18:52:18,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4886609071274298 [2023-08-25 18:52:18,778 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 905 transitions. [2023-08-25 18:52:18,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 905 transitions. [2023-08-25 18:52:18,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:52:18,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 905 transitions. [2023-08-25 18:52:18,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 452.5) internal successors, (905), 2 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:18,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 926.0) internal successors, (2778), 3 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:18,792 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 926.0) internal successors, (2778), 3 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:18,793 INFO L175 Difference]: Start difference. First operand has 114 places, 107 transitions, 250 flow. Second operand 2 states and 905 transitions. [2023-08-25 18:52:18,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 49 transitions, 220 flow [2023-08-25 18:52:18,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 196 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-25 18:52:18,837 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 110 flow [2023-08-25 18:52:18,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=926, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2023-08-25 18:52:18,843 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -63 predicate places. [2023-08-25 18:52:18,843 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 110 flow [2023-08-25 18:52:18,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 402.5) internal successors, (805), 2 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:18,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:52:18,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-25 18:52:18,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 18:52:18,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 91 more)] === [2023-08-25 18:52:18,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:52:18,850 INFO L85 PathProgramCache]: Analyzing trace with hash 48885541, now seen corresponding path program 1 times [2023-08-25 18:52:18,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:52:18,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975063246] [2023-08-25 18:52:18,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:52:18,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:52:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:52:18,974 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 18:52:18,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:52:18,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975063246] [2023-08-25 18:52:18,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975063246] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:52:18,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:52:18,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 18:52:18,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545341538] [2023-08-25 18:52:18,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:52:18,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 18:52:18,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:52:18,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 18:52:18,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 18:52:18,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 926 [2023-08-25 18:52:18,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 382.3333333333333) internal successors, (1147), 3 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:18,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:52:18,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 926 [2023-08-25 18:52:18,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:52:19,765 INFO L124 PetriNetUnfolderBase]: 14625/17550 cut-off events. [2023-08-25 18:52:19,766 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-25 18:52:19,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35472 conditions, 17550 events. 14625/17550 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 57361 event pairs, 6992 based on Foata normal form. 0/12446 useless extension candidates. Maximal degree in co-relation 35469. Up to 17537 conditions per place. [2023-08-25 18:52:19,822 INFO L140 encePairwiseOnDemand]: 914/926 looper letters, 54 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2023-08-25 18:52:19,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 257 flow [2023-08-25 18:52:19,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 18:52:19,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 18:52:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1209 transitions. [2023-08-25 18:52:19,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4352051835853132 [2023-08-25 18:52:19,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1209 transitions. [2023-08-25 18:52:19,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1209 transitions. [2023-08-25 18:52:19,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:52:19,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1209 transitions. [2023-08-25 18:52:19,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 403.0) internal successors, (1209), 3 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:19,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 926.0) internal successors, (3704), 4 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:19,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 926.0) internal successors, (3704), 4 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:19,834 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 110 flow. Second operand 3 states and 1209 transitions. [2023-08-25 18:52:19,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 257 flow [2023-08-25 18:52:19,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 257 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 18:52:19,836 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 140 flow [2023-08-25 18:52:19,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=926, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2023-08-25 18:52:19,837 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -66 predicate places. [2023-08-25 18:52:19,839 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 140 flow [2023-08-25 18:52:19,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 382.3333333333333) internal successors, (1147), 3 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:19,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:52:19,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:52:19,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 18:52:19,843 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 91 more)] === [2023-08-25 18:52:19,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:52:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1298460808, now seen corresponding path program 1 times [2023-08-25 18:52:19,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:52:19,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199230430] [2023-08-25 18:52:19,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:52:19,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:52:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:52:20,391 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 18:52:20,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:52:20,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199230430] [2023-08-25 18:52:20,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199230430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:52:20,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:52:20,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 18:52:20,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100657926] [2023-08-25 18:52:20,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:52:20,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 18:52:20,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:52:20,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 18:52:20,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 18:52:20,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 926 [2023-08-25 18:52:20,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 375.3333333333333) internal successors, (1126), 3 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:20,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:52:20,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 926 [2023-08-25 18:52:20,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:52:21,790 INFO L124 PetriNetUnfolderBase]: 29167/34991 cut-off events. [2023-08-25 18:52:21,790 INFO L125 PetriNetUnfolderBase]: For 7105/7105 co-relation queries the response was YES. [2023-08-25 18:52:21,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80963 conditions, 34991 events. 29167/34991 cut-off events. For 7105/7105 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 127447 event pairs, 8436 based on Foata normal form. 1/24784 useless extension candidates. Maximal degree in co-relation 80959. Up to 22600 conditions per place. [2023-08-25 18:52:22,046 INFO L140 encePairwiseOnDemand]: 918/926 looper letters, 81 selfloop transitions, 7 changer transitions 1/89 dead transitions. [2023-08-25 18:52:22,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 89 transitions, 421 flow [2023-08-25 18:52:22,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 18:52:22,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 18:52:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1173 transitions. [2023-08-25 18:52:22,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222462203023758 [2023-08-25 18:52:22,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1173 transitions. [2023-08-25 18:52:22,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1173 transitions. [2023-08-25 18:52:22,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:52:22,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1173 transitions. [2023-08-25 18:52:22,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 391.0) internal successors, (1173), 3 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:22,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 926.0) internal successors, (3704), 4 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:22,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 926.0) internal successors, (3704), 4 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:22,056 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 140 flow. Second operand 3 states and 1173 transitions. [2023-08-25 18:52:22,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 89 transitions, 421 flow [2023-08-25 18:52:22,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 89 transitions, 421 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 18:52:22,058 INFO L231 Difference]: Finished difference. Result has 51 places, 55 transitions, 187 flow [2023-08-25 18:52:22,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=926, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=51, PETRI_TRANSITIONS=55} [2023-08-25 18:52:22,060 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -63 predicate places. [2023-08-25 18:52:22,060 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 55 transitions, 187 flow [2023-08-25 18:52:22,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 375.3333333333333) internal successors, (1126), 3 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:22,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:52:22,060 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:52:22,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 18:52:22,063 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 91 more)] === [2023-08-25 18:52:22,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:52:22,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1987640200, now seen corresponding path program 1 times [2023-08-25 18:52:22,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:52:22,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426063743] [2023-08-25 18:52:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:52:22,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:52:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:52:22,169 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 18:52:22,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:52:22,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426063743] [2023-08-25 18:52:22,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426063743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:52:22,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:52:22,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 18:52:22,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138007755] [2023-08-25 18:52:22,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:52:22,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 18:52:22,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:52:22,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 18:52:22,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 18:52:22,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 926 [2023-08-25 18:52:22,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 55 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 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 18:52:22,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:52:22,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 926 [2023-08-25 18:52:22,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:52:24,313 INFO L124 PetriNetUnfolderBase]: 43226/51938 cut-off events. [2023-08-25 18:52:24,313 INFO L125 PetriNetUnfolderBase]: For 26020/26020 co-relation queries the response was YES. [2023-08-25 18:52:24,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139981 conditions, 51938 events. 43226/51938 cut-off events. For 26020/26020 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 203204 event pairs, 5191 based on Foata normal form. 482/52420 useless extension candidates. Maximal degree in co-relation 139975. Up to 21675 conditions per place. [2023-08-25 18:52:24,559 INFO L140 encePairwiseOnDemand]: 921/926 looper letters, 145 selfloop transitions, 10 changer transitions 0/155 dead transitions. [2023-08-25 18:52:24,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 155 transitions, 801 flow [2023-08-25 18:52:24,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 18:52:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 18:52:24,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2034 transitions. [2023-08-25 18:52:24,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43930885529157665 [2023-08-25 18:52:24,564 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2034 transitions. [2023-08-25 18:52:24,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2034 transitions. [2023-08-25 18:52:24,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:52:24,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2034 transitions. [2023-08-25 18:52:24,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 406.8) internal successors, (2034), 5 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:24,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 926.0) internal successors, (5556), 6 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:24,575 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 926.0) internal successors, (5556), 6 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:24,575 INFO L175 Difference]: Start difference. First operand has 51 places, 55 transitions, 187 flow. Second operand 5 states and 2034 transitions. [2023-08-25 18:52:24,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 155 transitions, 801 flow [2023-08-25 18:52:24,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 155 transitions, 789 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 18:52:24,582 INFO L231 Difference]: Finished difference. Result has 56 places, 62 transitions, 245 flow [2023-08-25 18:52:24,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=926, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=56, PETRI_TRANSITIONS=62} [2023-08-25 18:52:24,584 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -58 predicate places. [2023-08-25 18:52:24,585 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 62 transitions, 245 flow [2023-08-25 18:52:24,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 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 18:52:24,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:52:24,585 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:52:24,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 18:52:24,586 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 91 more)] === [2023-08-25 18:52:24,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:52:24,586 INFO L85 PathProgramCache]: Analyzing trace with hash -688528476, now seen corresponding path program 2 times [2023-08-25 18:52:24,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:52:24,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019325170] [2023-08-25 18:52:24,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:52:24,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:52:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:52:24,704 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 18:52:24,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:52:24,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019325170] [2023-08-25 18:52:24,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019325170] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 18:52:24,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126973476] [2023-08-25 18:52:24,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 18:52:24,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 18:52:24,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 18:52:24,706 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 18:52:24,709 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 18:52:24,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 18:52:24,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 18:52:24,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 18:52:24,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 18:52:25,022 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 18:52:25,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 18:52:25,105 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 18:52:25,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126973476] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 18:52:25,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 18:52:25,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-25 18:52:25,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431938671] [2023-08-25 18:52:25,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 18:52:25,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 18:52:25,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:52:25,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 18:52:25,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 18:52:25,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 926 [2023-08-25 18:52:25,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 62 transitions, 245 flow. Second operand has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 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 18:52:25,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:52:25,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 926 [2023-08-25 18:52:25,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:52:27,990 INFO L124 PetriNetUnfolderBase]: 52376/62864 cut-off events. [2023-08-25 18:52:27,990 INFO L125 PetriNetUnfolderBase]: For 49536/49536 co-relation queries the response was YES. [2023-08-25 18:52:28,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182926 conditions, 62864 events. 52376/62864 cut-off events. For 49536/49536 co-relation queries the response was YES. Maximal size of possible extension queue 1269. Compared 247900 event pairs, 17381 based on Foata normal form. 888/63752 useless extension candidates. Maximal degree in co-relation 182918. Up to 31707 conditions per place. [2023-08-25 18:52:28,281 INFO L140 encePairwiseOnDemand]: 921/926 looper letters, 143 selfloop transitions, 10 changer transitions 0/153 dead transitions. [2023-08-25 18:52:28,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 153 transitions, 836 flow [2023-08-25 18:52:28,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 18:52:28,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 18:52:28,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2034 transitions. [2023-08-25 18:52:28,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43930885529157665 [2023-08-25 18:52:28,285 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2034 transitions. [2023-08-25 18:52:28,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2034 transitions. [2023-08-25 18:52:28,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:52:28,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2034 transitions. [2023-08-25 18:52:28,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 406.8) internal successors, (2034), 5 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:28,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 926.0) internal successors, (5556), 6 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:28,297 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 926.0) internal successors, (5556), 6 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:28,297 INFO L175 Difference]: Start difference. First operand has 56 places, 62 transitions, 245 flow. Second operand 5 states and 2034 transitions. [2023-08-25 18:52:28,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 153 transitions, 836 flow [2023-08-25 18:52:28,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 153 transitions, 836 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 18:52:28,346 INFO L231 Difference]: Finished difference. Result has 62 places, 65 transitions, 299 flow [2023-08-25 18:52:28,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=926, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=62, PETRI_TRANSITIONS=65} [2023-08-25 18:52:28,347 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -52 predicate places. [2023-08-25 18:52:28,347 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 65 transitions, 299 flow [2023-08-25 18:52:28,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 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 18:52:28,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:52:28,348 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:52:28,355 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 18:52:28,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 18:52:28,553 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 91 more)] === [2023-08-25 18:52:28,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:52:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash -503172592, now seen corresponding path program 1 times [2023-08-25 18:52:28,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:52:28,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353113185] [2023-08-25 18:52:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:52:28,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:52:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:52:28,676 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 18:52:28,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:52:28,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353113185] [2023-08-25 18:52:28,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353113185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:52:28,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:52:28,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 18:52:28,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802661580] [2023-08-25 18:52:28,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:52:28,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 18:52:28,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:52:28,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 18:52:28,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 18:52:28,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 926 [2023-08-25 18:52:28,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 65 transitions, 299 flow. Second operand has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 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 18:52:28,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:52:28,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 926 [2023-08-25 18:52:28,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:52:31,686 INFO L124 PetriNetUnfolderBase]: 51570/62058 cut-off events. [2023-08-25 18:52:31,686 INFO L125 PetriNetUnfolderBase]: For 76128/76128 co-relation queries the response was YES. [2023-08-25 18:52:31,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188580 conditions, 62058 events. 51570/62058 cut-off events. For 76128/76128 co-relation queries the response was YES. Maximal size of possible extension queue 1269. Compared 252265 event pairs, 5353 based on Foata normal form. 806/62864 useless extension candidates. Maximal degree in co-relation 188569. Up to 23795 conditions per place. [2023-08-25 18:52:31,952 INFO L140 encePairwiseOnDemand]: 921/926 looper letters, 148 selfloop transitions, 8 changer transitions 0/156 dead transitions. [2023-08-25 18:52:31,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 156 transitions, 884 flow [2023-08-25 18:52:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 18:52:31,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 18:52:31,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2033 transitions. [2023-08-25 18:52:31,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43909287257019436 [2023-08-25 18:52:31,956 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2033 transitions. [2023-08-25 18:52:31,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2033 transitions. [2023-08-25 18:52:31,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:52:31,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2033 transitions. [2023-08-25 18:52:31,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 406.6) internal successors, (2033), 5 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:31,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 926.0) internal successors, (5556), 6 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:31,965 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 926.0) internal successors, (5556), 6 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:31,965 INFO L175 Difference]: Start difference. First operand has 62 places, 65 transitions, 299 flow. Second operand 5 states and 2033 transitions. [2023-08-25 18:52:31,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 156 transitions, 884 flow [2023-08-25 18:52:32,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 156 transitions, 875 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-25 18:52:32,491 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 304 flow [2023-08-25 18:52:32,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=926, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2023-08-25 18:52:32,492 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -48 predicate places. [2023-08-25 18:52:32,492 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 304 flow [2023-08-25 18:52:32,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 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 18:52:32,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:52:32,493 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:52:32,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 18:52:32,493 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 91 more)] === [2023-08-25 18:52:32,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:52:32,493 INFO L85 PathProgramCache]: Analyzing trace with hash -719539565, now seen corresponding path program 1 times [2023-08-25 18:52:32,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:52:32,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790541945] [2023-08-25 18:52:32,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:52:32,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:52:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:52:32,560 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 18:52:32,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:52:32,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790541945] [2023-08-25 18:52:32,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790541945] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 18:52:32,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267032383] [2023-08-25 18:52:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:52:32,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 18:52:32,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 18:52:32,562 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 18:52:32,564 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 18:52:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:52:32,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 18:52:32,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 18:52:32,784 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 18:52:32,784 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 18:52:32,834 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 18:52:32,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267032383] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 18:52:32,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 18:52:32,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-25 18:52:32,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898746045] [2023-08-25 18:52:32,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 18:52:32,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 18:52:32,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:52:32,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 18:52:32,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 18:52:32,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 926 [2023-08-25 18:52:32,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 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 18:52:32,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:52:32,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 926 [2023-08-25 18:52:32,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:52:40,243 INFO L124 PetriNetUnfolderBase]: 123072/148280 cut-off events. [2023-08-25 18:52:40,243 INFO L125 PetriNetUnfolderBase]: For 232109/232109 co-relation queries the response was YES. [2023-08-25 18:52:40,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466934 conditions, 148280 events. 123072/148280 cut-off events. For 232109/232109 co-relation queries the response was YES. Maximal size of possible extension queue 2996. Compared 663065 event pairs, 32182 based on Foata normal form. 2448/150728 useless extension candidates. Maximal degree in co-relation 466922. Up to 54426 conditions per place. [2023-08-25 18:52:40,974 INFO L140 encePairwiseOnDemand]: 921/926 looper letters, 179 selfloop transitions, 8 changer transitions 0/187 dead transitions. [2023-08-25 18:52:40,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 187 transitions, 1270 flow [2023-08-25 18:52:40,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 18:52:40,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 18:52:40,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2036 transitions. [2023-08-25 18:52:40,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43974082073434123 [2023-08-25 18:52:40,978 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2036 transitions. [2023-08-25 18:52:40,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2036 transitions. [2023-08-25 18:52:40,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:52:40,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2036 transitions. [2023-08-25 18:52:40,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 407.2) internal successors, (2036), 5 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:40,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 926.0) internal successors, (5556), 6 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:40,987 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 926.0) internal successors, (5556), 6 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:40,987 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 304 flow. Second operand 5 states and 2036 transitions. [2023-08-25 18:52:40,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 187 transitions, 1270 flow [2023-08-25 18:52:41,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 187 transitions, 1243 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-25 18:52:41,042 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 350 flow [2023-08-25 18:52:41,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=926, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2023-08-25 18:52:41,042 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -42 predicate places. [2023-08-25 18:52:41,042 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 350 flow [2023-08-25 18:52:41,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 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 18:52:41,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:52:41,043 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:52:41,050 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-25 18:52:41,247 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,SelfDestructingSolverStorable6 [2023-08-25 18:52:41,248 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 91 more)] === [2023-08-25 18:52:41,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:52:41,248 INFO L85 PathProgramCache]: Analyzing trace with hash 723411833, now seen corresponding path program 2 times [2023-08-25 18:52:41,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:52:41,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439352798] [2023-08-25 18:52:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:52:41,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:52:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:52:41,353 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 18:52:41,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:52:41,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439352798] [2023-08-25 18:52:41,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439352798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:52:41,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:52:41,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 18:52:41,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208795676] [2023-08-25 18:52:41,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:52:41,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 18:52:41,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:52:41,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 18:52:41,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 18:52:41,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 926 [2023-08-25 18:52:41,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 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 18:52:41,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:52:41,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 926 [2023-08-25 18:52:41,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:52:48,038 INFO L124 PetriNetUnfolderBase]: 111990/134698 cut-off events. [2023-08-25 18:52:48,038 INFO L125 PetriNetUnfolderBase]: For 229437/229437 co-relation queries the response was YES. [2023-08-25 18:52:48,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465172 conditions, 134698 events. 111990/134698 cut-off events. For 229437/229437 co-relation queries the response was YES. Maximal size of possible extension queue 2742. Compared 599634 event pairs, 12741 based on Foata normal form. 1092/135790 useless extension candidates. Maximal degree in co-relation 465156. Up to 53653 conditions per place. [2023-08-25 18:52:48,774 INFO L140 encePairwiseOnDemand]: 921/926 looper letters, 179 selfloop transitions, 11 changer transitions 0/190 dead transitions. [2023-08-25 18:52:48,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 190 transitions, 1336 flow [2023-08-25 18:52:48,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 18:52:48,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 18:52:48,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2030 transitions. [2023-08-25 18:52:48,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43844492440604754 [2023-08-25 18:52:48,778 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2030 transitions. [2023-08-25 18:52:48,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2030 transitions. [2023-08-25 18:52:48,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:52:48,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2030 transitions. [2023-08-25 18:52:48,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 406.0) internal successors, (2030), 5 states have internal predecessors, (2030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:48,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 926.0) internal successors, (5556), 6 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:48,786 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 926.0) internal successors, (5556), 6 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:52:48,786 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 350 flow. Second operand 5 states and 2030 transitions. [2023-08-25 18:52:48,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 190 transitions, 1336 flow [2023-08-25 18:52:51,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 190 transitions, 1336 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 18:52:51,320 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 411 flow [2023-08-25 18:52:51,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=926, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=411, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-08-25 18:52:51,320 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -37 predicate places. [2023-08-25 18:52:51,321 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 411 flow [2023-08-25 18:52:51,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 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 18:52:51,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:52:51,321 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:52:51,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 18:52:51,321 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 91 more)] === [2023-08-25 18:52:51,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:52:51,322 INFO L85 PathProgramCache]: Analyzing trace with hash 992628713, now seen corresponding path program 1 times [2023-08-25 18:52:51,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:52:51,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585225266] [2023-08-25 18:52:51,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:52:51,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:52:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:52:51,392 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 18:52:51,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:52:51,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585225266] [2023-08-25 18:52:51,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585225266] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 18:52:51,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145635037] [2023-08-25 18:52:51,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:52:51,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 18:52:51,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 18:52:51,394 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 18:52:51,395 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 18:52:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:52:51,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 18:52:51,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 18:52:51,602 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 18:52:51,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 18:52:51,660 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 18:52:51,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145635037] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 18:52:51,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 18:52:51,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-25 18:52:51,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649309383] [2023-08-25 18:52:51,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 18:52:51,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 18:52:51,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:52:51,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 18:52:51,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 18:52:51,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 926 [2023-08-25 18:52:51,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 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 18:52:51,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:52:51,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 926 [2023-08-25 18:52:51,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:53:08,135 INFO L124 PetriNetUnfolderBase]: 264733/318385 cut-off events. [2023-08-25 18:53:08,136 INFO L125 PetriNetUnfolderBase]: For 681706/681706 co-relation queries the response was YES. [2023-08-25 18:53:09,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1159677 conditions, 318385 events. 264733/318385 cut-off events. For 681706/681706 co-relation queries the response was YES. Maximal size of possible extension queue 6444. Compared 1499214 event pairs, 61043 based on Foata normal form. 5024/323409 useless extension candidates. Maximal degree in co-relation 1159659. Up to 107985 conditions per place. [2023-08-25 18:53:10,304 INFO L140 encePairwiseOnDemand]: 921/926 looper letters, 208 selfloop transitions, 8 changer transitions 0/216 dead transitions. [2023-08-25 18:53:10,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 216 transitions, 1661 flow [2023-08-25 18:53:10,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 18:53:10,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 18:53:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2028 transitions. [2023-08-25 18:53:10,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43801295896328296 [2023-08-25 18:53:10,308 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2028 transitions. [2023-08-25 18:53:10,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2028 transitions. [2023-08-25 18:53:10,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:53:10,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2028 transitions. [2023-08-25 18:53:10,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 405.6) internal successors, (2028), 5 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:53:10,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 926.0) internal successors, (5556), 6 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:53:10,314 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 926.0) internal successors, (5556), 6 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:53:10,315 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 411 flow. Second operand 5 states and 2028 transitions. [2023-08-25 18:53:10,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 216 transitions, 1661 flow [2023-08-25 18:53:11,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 216 transitions, 1621 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-25 18:53:11,483 INFO L231 Difference]: Finished difference. Result has 83 places, 79 transitions, 453 flow [2023-08-25 18:53:11,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=926, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=83, PETRI_TRANSITIONS=79} [2023-08-25 18:53:11,483 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -31 predicate places. [2023-08-25 18:53:11,483 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 79 transitions, 453 flow [2023-08-25 18:53:11,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 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 18:53:11,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:53:11,484 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:53:11,493 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 18:53:11,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 18:53:11,689 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 91 more)] === [2023-08-25 18:53:11,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:53:11,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1581647511, now seen corresponding path program 1 times [2023-08-25 18:53:11,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:53:11,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671923860] [2023-08-25 18:53:11,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:53:11,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:53:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:53:11,778 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 18:53:11,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:53:11,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671923860] [2023-08-25 18:53:11,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671923860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:53:11,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:53:11,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 18:53:11,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622781143] [2023-08-25 18:53:11,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:53:11,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 18:53:11,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:53:11,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 18:53:11,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 18:53:11,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 926 [2023-08-25 18:53:11,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 79 transitions, 453 flow. Second operand has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 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 18:53:11,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:53:11,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 926 [2023-08-25 18:53:11,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:53:29,060 INFO L124 PetriNetUnfolderBase]: 262453/316105 cut-off events. [2023-08-25 18:53:29,060 INFO L125 PetriNetUnfolderBase]: For 699567/699567 co-relation queries the response was YES. [2023-08-25 18:53:30,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1225177 conditions, 316105 events. 262453/316105 cut-off events. For 699567/699567 co-relation queries the response was YES. Maximal size of possible extension queue 6435. Compared 1550202 event pairs, 32163 based on Foata normal form. 2280/318385 useless extension candidates. Maximal degree in co-relation 1225155. Up to 168541 conditions per place. [2023-08-25 18:53:31,285 INFO L140 encePairwiseOnDemand]: 921/926 looper letters, 200 selfloop transitions, 8 changer transitions 0/208 dead transitions. [2023-08-25 18:53:31,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 208 transitions, 1575 flow [2023-08-25 18:53:31,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 18:53:31,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 18:53:31,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2029 transitions. [2023-08-25 18:53:31,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43822894168466525 [2023-08-25 18:53:31,289 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2029 transitions. [2023-08-25 18:53:31,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2029 transitions. [2023-08-25 18:53:31,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:53:31,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2029 transitions. [2023-08-25 18:53:31,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 405.8) internal successors, (2029), 5 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:53:31,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 926.0) internal successors, (5556), 6 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:53:31,296 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 926.0) internal successors, (5556), 6 states have internal predecessors, (5556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:53:31,296 INFO L175 Difference]: Start difference. First operand has 83 places, 79 transitions, 453 flow. Second operand 5 states and 2029 transitions. [2023-08-25 18:53:31,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 208 transitions, 1575 flow [2023-08-25 18:53:49,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 208 transitions, 1575 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 18:53:49,386 INFO L231 Difference]: Finished difference. Result has 88 places, 78 transitions, 469 flow [2023-08-25 18:53:49,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=926, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=469, PETRI_PLACES=88, PETRI_TRANSITIONS=78} [2023-08-25 18:53:49,387 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -26 predicate places. [2023-08-25 18:53:49,387 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 78 transitions, 469 flow [2023-08-25 18:53:49,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 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 18:53:49,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:53:49,387 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:53:49,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 18:53:49,387 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 91 more)] === [2023-08-25 18:53:49,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:53:49,388 INFO L85 PathProgramCache]: Analyzing trace with hash -800985997, now seen corresponding path program 2 times [2023-08-25 18:53:49,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:53:49,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81277178] [2023-08-25 18:53:49,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:53:49,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:53:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:53:49,447 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 18:53:49,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:53:49,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81277178] [2023-08-25 18:53:49,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81277178] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:53:49,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:53:49,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 18:53:49,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259504670] [2023-08-25 18:53:49,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:53:49,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 18:53:49,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:53:49,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 18:53:49,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 18:53:49,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 926 [2023-08-25 18:53:49,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 78 transitions, 469 flow. Second operand has 4 states, 4 states have (on average 388.75) internal successors, (1555), 4 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 18:53:49,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:53:49,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 926 [2023-08-25 18:53:49,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand