/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 07:02:00,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 07:02:00,718 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 07:02:00,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 07:02:00,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 07:02:00,759 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 07:02:00,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 07:02:00,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 07:02:00,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 07:02:00,764 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 07:02:00,765 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 07:02:00,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 07:02:00,765 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 07:02:00,766 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 07:02:00,767 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 07:02:00,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 07:02:00,767 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 07:02:00,767 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 07:02:00,767 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 07:02:00,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 07:02:00,768 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 07:02:00,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 07:02:00,769 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 07:02:00,769 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 07:02:00,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 07:02:00,770 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 07:02:00,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 07:02:00,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:02:00,770 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 07:02:00,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 07:02:00,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 07:02:00,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 07:02:00,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 07:02:00,772 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 07:02:00,772 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 07:02:00,773 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 07:02:01,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 07:02:01,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 07:02:01,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 07:02:01,075 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 07:02:01,076 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 07:02:01,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-08-25 07:02:02,315 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 07:02:02,547 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 07:02:02,549 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-08-25 07:02:02,555 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/931b455c3/213cdd1a116841e2a73134b26de12887/FLAGab62ca597 [2023-08-25 07:02:02,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/931b455c3/213cdd1a116841e2a73134b26de12887 [2023-08-25 07:02:02,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 07:02:02,568 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 07:02:02,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 07:02:02,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 07:02:02,571 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 07:02:02,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:02:02" (1/1) ... [2023-08-25 07:02:02,572 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d8654bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:02:02, skipping insertion in model container [2023-08-25 07:02:02,573 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:02:02" (1/1) ... [2023-08-25 07:02:02,592 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 07:02:02,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:02:02,751 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 07:02:02,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:02:02,804 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 07:02:02,804 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 07:02:02,810 INFO L206 MainTranslator]: Completed translation [2023-08-25 07:02:02,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:02:02 WrapperNode [2023-08-25 07:02:02,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 07:02:02,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 07:02:02,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 07:02:02,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 07:02:02,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:02:02" (1/1) ... [2023-08-25 07:02:02,840 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:02:02" (1/1) ... [2023-08-25 07:02:02,882 INFO L138 Inliner]: procedures = 25, calls = 56, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 491 [2023-08-25 07:02:02,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 07:02:02,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 07:02:02,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 07:02:02,883 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 07:02:02,892 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:02:02" (1/1) ... [2023-08-25 07:02:02,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:02:02" (1/1) ... [2023-08-25 07:02:02,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:02:02" (1/1) ... [2023-08-25 07:02:02,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:02:02" (1/1) ... [2023-08-25 07:02:02,936 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:02:02" (1/1) ... [2023-08-25 07:02:02,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:02:02" (1/1) ... [2023-08-25 07:02:02,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:02:02" (1/1) ... [2023-08-25 07:02:02,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:02:02" (1/1) ... [2023-08-25 07:02:02,948 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 07:02:02,949 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 07:02:02,949 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 07:02:02,949 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 07:02:02,950 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:02:02" (1/1) ... [2023-08-25 07:02:02,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:02:02,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:02:02,986 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 07:02:03,010 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 07:02:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 07:02:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 07:02:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 07:02:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 07:02:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 07:02:03,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 07:02:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 07:02:03,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 07:02:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-25 07:02:03,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-25 07:02:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 07:02:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 07:02:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 07:02:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-25 07:02:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 07:02:03,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 07:02:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 07:02:03,028 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 07:02:03,174 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 07:02:03,175 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 07:02:03,847 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 07:02:04,223 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 07:02:04,224 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-25 07:02:04,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:02:04 BoogieIcfgContainer [2023-08-25 07:02:04,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 07:02:04,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 07:02:04,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 07:02:04,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 07:02:04,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:02:02" (1/3) ... [2023-08-25 07:02:04,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30083bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:02:04, skipping insertion in model container [2023-08-25 07:02:04,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:02:02" (2/3) ... [2023-08-25 07:02:04,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30083bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:02:04, skipping insertion in model container [2023-08-25 07:02:04,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:02:04" (3/3) ... [2023-08-25 07:02:04,235 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2023-08-25 07:02:04,251 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 07:02:04,252 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2023-08-25 07:02:04,252 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 07:02:04,393 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 07:02:04,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 360 places, 368 transitions, 760 flow [2023-08-25 07:02:04,602 INFO L124 PetriNetUnfolderBase]: 18/365 cut-off events. [2023-08-25 07:02:04,602 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 07:02:04,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 365 events. 18/365 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 529 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 286. Up to 3 conditions per place. [2023-08-25 07:02:04,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 360 places, 368 transitions, 760 flow [2023-08-25 07:02:04,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 346 places, 354 transitions, 726 flow [2023-08-25 07:02:04,621 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 07:02:04,633 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 346 places, 354 transitions, 726 flow [2023-08-25 07:02:04,637 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 346 places, 354 transitions, 726 flow [2023-08-25 07:02:04,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 354 transitions, 726 flow [2023-08-25 07:02:04,701 INFO L124 PetriNetUnfolderBase]: 18/354 cut-off events. [2023-08-25 07:02:04,701 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 07:02:04,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 354 events. 18/354 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 525 event pairs, 0 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 286. Up to 3 conditions per place. [2023-08-25 07:02:04,712 INFO L119 LiptonReduction]: Number of co-enabled transitions 10692 [2023-08-25 07:02:17,119 INFO L134 LiptonReduction]: Checked pairs total: 38557 [2023-08-25 07:02:17,119 INFO L136 LiptonReduction]: Total number of compositions: 391 [2023-08-25 07:02:17,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 07:02:17,141 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;@6479f40f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 07:02:17,142 INFO L358 AbstractCegarLoop]: Starting to check reachability of 123 error locations. [2023-08-25 07:02:17,143 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 07:02:17,143 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 07:02:17,143 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:02:17,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:17,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 07:02:17,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:02:17,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:17,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1946, now seen corresponding path program 1 times [2023-08-25 07:02:17,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:17,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581173469] [2023-08-25 07:02:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:17,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:17,242 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 07:02:17,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:17,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581173469] [2023-08-25 07:02:17,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581173469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:02:17,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:02:17,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 07:02:17,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234205129] [2023-08-25 07:02:17,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:02:17,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 07:02:17,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:17,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 07:02:17,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 07:02:17,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 759 [2023-08-25 07:02:17,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 238 flow. Second operand has 2 states, 2 states have (on average 299.5) internal successors, (599), 2 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:17,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:17,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 759 [2023-08-25 07:02:17,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:17,480 INFO L124 PetriNetUnfolderBase]: 324/656 cut-off events. [2023-08-25 07:02:17,480 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-08-25 07:02:17,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161 conditions, 656 events. 324/656 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2972 event pairs, 167 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 859. Up to 453 conditions per place. [2023-08-25 07:02:17,485 INFO L140 encePairwiseOnDemand]: 691/759 looper letters, 24 selfloop transitions, 0 changer transitions 0/42 dead transitions. [2023-08-25 07:02:17,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 150 flow [2023-08-25 07:02:17,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 07:02:17,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 07:02:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 690 transitions. [2023-08-25 07:02:17,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-08-25 07:02:17,505 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 690 transitions. [2023-08-25 07:02:17,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 690 transitions. [2023-08-25 07:02:17,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:17,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 690 transitions. [2023-08-25 07:02:17,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 345.0) internal successors, (690), 2 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:17,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 759.0) internal successors, (2277), 3 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:17,525 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 759.0) internal successors, (2277), 3 states have internal predecessors, (2277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:17,526 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 238 flow. Second operand 2 states and 690 transitions. [2023-08-25 07:02:17,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 150 flow [2023-08-25 07:02:17,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 138 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-25 07:02:17,532 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 90 flow [2023-08-25 07:02:17,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2023-08-25 07:02:17,537 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -72 predicate places. [2023-08-25 07:02:17,537 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 90 flow [2023-08-25 07:02:17,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 299.5) internal successors, (599), 2 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:17,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:17,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:02:17,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 07:02:17,539 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:02:17,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:17,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1501596184, now seen corresponding path program 1 times [2023-08-25 07:02:17,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:17,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126885927] [2023-08-25 07:02:17,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:17,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:18,239 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 07:02:18,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:18,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126885927] [2023-08-25 07:02:18,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126885927] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:02:18,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:02:18,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:02:18,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985032411] [2023-08-25 07:02:18,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:02:18,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:02:18,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:18,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:02:18,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:02:18,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 759 [2023-08-25 07:02:18,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 90 flow. Second operand has 6 states, 6 states have (on average 265.1666666666667) internal successors, (1591), 6 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:18,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:18,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 759 [2023-08-25 07:02:18,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:18,717 INFO L124 PetriNetUnfolderBase]: 1012/1368 cut-off events. [2023-08-25 07:02:18,718 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:02:18,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2746 conditions, 1368 events. 1012/1368 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4733 event pairs, 60 based on Foata normal form. 0/900 useless extension candidates. Maximal degree in co-relation 2743. Up to 667 conditions per place. [2023-08-25 07:02:18,725 INFO L140 encePairwiseOnDemand]: 754/759 looper letters, 62 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-08-25 07:02:18,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 69 transitions, 276 flow [2023-08-25 07:02:18,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:02:18,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:02:18,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1645 transitions. [2023-08-25 07:02:18,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36122090469916557 [2023-08-25 07:02:18,730 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1645 transitions. [2023-08-25 07:02:18,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1645 transitions. [2023-08-25 07:02:18,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:18,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1645 transitions. [2023-08-25 07:02:18,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 274.1666666666667) internal successors, (1645), 6 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:18,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:18,744 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:18,744 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 90 flow. Second operand 6 states and 1645 transitions. [2023-08-25 07:02:18,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 69 transitions, 276 flow [2023-08-25 07:02:18,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 69 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:02:18,746 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 96 flow [2023-08-25 07:02:18,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-08-25 07:02:18,747 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -68 predicate places. [2023-08-25 07:02:18,747 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 96 flow [2023-08-25 07:02:18,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 265.1666666666667) internal successors, (1591), 6 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:18,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:18,748 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] [2023-08-25 07:02:18,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 07:02:18,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:02:18,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:18,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1528549441, now seen corresponding path program 1 times [2023-08-25 07:02:18,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:18,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29267798] [2023-08-25 07:02:18,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:18,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:18,888 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 07:02:18,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:18,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29267798] [2023-08-25 07:02:18,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29267798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:02:18,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:02:18,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:02:18,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234927429] [2023-08-25 07:02:18,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:02:18,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 07:02:18,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:18,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 07:02:18,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 07:02:18,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 759 [2023-08-25 07:02:18,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:18,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:18,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 759 [2023-08-25 07:02:18,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:19,049 INFO L124 PetriNetUnfolderBase]: 326/657 cut-off events. [2023-08-25 07:02:19,049 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-25 07:02:19,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 657 events. 326/657 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2838 event pairs, 167 based on Foata normal form. 15/496 useless extension candidates. Maximal degree in co-relation 1251. Up to 449 conditions per place. [2023-08-25 07:02:19,053 INFO L140 encePairwiseOnDemand]: 753/759 looper letters, 23 selfloop transitions, 2 changer transitions 11/53 dead transitions. [2023-08-25 07:02:19,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 53 transitions, 197 flow [2023-08-25 07:02:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 07:02:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 07:02:19,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1079 transitions. [2023-08-25 07:02:19,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3554018445322793 [2023-08-25 07:02:19,056 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1079 transitions. [2023-08-25 07:02:19,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1079 transitions. [2023-08-25 07:02:19,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:19,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1079 transitions. [2023-08-25 07:02:19,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 269.75) internal successors, (1079), 4 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:19,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:19,065 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:19,066 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 96 flow. Second operand 4 states and 1079 transitions. [2023-08-25 07:02:19,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 53 transitions, 197 flow [2023-08-25 07:02:19,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 07:02:19,068 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 107 flow [2023-08-25 07:02:19,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-08-25 07:02:19,070 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -67 predicate places. [2023-08-25 07:02:19,070 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 107 flow [2023-08-25 07:02:19,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:19,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:19,071 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] [2023-08-25 07:02:19,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 07:02:19,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:02:19,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:19,074 INFO L85 PathProgramCache]: Analyzing trace with hash -946383144, now seen corresponding path program 1 times [2023-08-25 07:02:19,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:19,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718971935] [2023-08-25 07:02:19,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:19,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:19,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:19,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718971935] [2023-08-25 07:02:19,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718971935] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:02:19,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:02:19,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:02:19,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874738993] [2023-08-25 07:02:19,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:02:19,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:02:19,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:19,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:02:19,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:02:19,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 759 [2023-08-25 07:02:19,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 107 flow. Second operand has 6 states, 6 states have (on average 266.5) internal successors, (1599), 6 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:19,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:19,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 759 [2023-08-25 07:02:19,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:19,938 INFO L124 PetriNetUnfolderBase]: 984/1329 cut-off events. [2023-08-25 07:02:19,939 INFO L125 PetriNetUnfolderBase]: For 294/294 co-relation queries the response was YES. [2023-08-25 07:02:19,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3179 conditions, 1329 events. 984/1329 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4564 event pairs, 446 based on Foata normal form. 0/878 useless extension candidates. Maximal degree in co-relation 3173. Up to 1070 conditions per place. [2023-08-25 07:02:19,945 INFO L140 encePairwiseOnDemand]: 754/759 looper letters, 54 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2023-08-25 07:02:19,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 269 flow [2023-08-25 07:02:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:02:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:02:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1636 transitions. [2023-08-25 07:02:19,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35924462011418534 [2023-08-25 07:02:19,950 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1636 transitions. [2023-08-25 07:02:19,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1636 transitions. [2023-08-25 07:02:19,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:19,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1636 transitions. [2023-08-25 07:02:19,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 272.6666666666667) internal successors, (1636), 6 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:19,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:19,963 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:19,963 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 107 flow. Second operand 6 states and 1636 transitions. [2023-08-25 07:02:19,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 269 flow [2023-08-25 07:02:19,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 265 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 07:02:19,965 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 109 flow [2023-08-25 07:02:19,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-08-25 07:02:19,966 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -65 predicate places. [2023-08-25 07:02:19,966 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 109 flow [2023-08-25 07:02:19,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 266.5) internal successors, (1599), 6 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:19,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:19,967 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] [2023-08-25 07:02:19,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 07:02:19,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:02:19,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1572493821, now seen corresponding path program 1 times [2023-08-25 07:02:19,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:19,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412606027] [2023-08-25 07:02:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:19,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:20,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:20,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412606027] [2023-08-25 07:02:20,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412606027] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:02:20,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:02:20,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:02:20,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974546856] [2023-08-25 07:02:20,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:02:20,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 07:02:20,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:20,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 07:02:20,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 07:02:20,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 759 [2023-08-25 07:02:20,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 264.25) internal successors, (1057), 4 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:20,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:20,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 759 [2023-08-25 07:02:20,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:20,251 INFO L124 PetriNetUnfolderBase]: 368/741 cut-off events. [2023-08-25 07:02:20,252 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2023-08-25 07:02:20,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 741 events. 368/741 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3441 event pairs, 194 based on Foata normal form. 24/585 useless extension candidates. Maximal degree in co-relation 1615. Up to 450 conditions per place. [2023-08-25 07:02:20,256 INFO L140 encePairwiseOnDemand]: 752/759 looper letters, 24 selfloop transitions, 2 changer transitions 12/54 dead transitions. [2023-08-25 07:02:20,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 54 transitions, 223 flow [2023-08-25 07:02:20,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 07:02:20,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 07:02:20,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1081 transitions. [2023-08-25 07:02:20,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2023-08-25 07:02:20,259 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1081 transitions. [2023-08-25 07:02:20,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1081 transitions. [2023-08-25 07:02:20,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:20,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1081 transitions. [2023-08-25 07:02:20,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 270.25) internal successors, (1081), 4 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:20,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:20,267 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:20,267 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 109 flow. Second operand 4 states and 1081 transitions. [2023-08-25 07:02:20,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 54 transitions, 223 flow [2023-08-25 07:02:20,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 07:02:20,269 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 122 flow [2023-08-25 07:02:20,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-08-25 07:02:20,270 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -64 predicate places. [2023-08-25 07:02:20,270 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 122 flow [2023-08-25 07:02:20,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 264.25) internal successors, (1057), 4 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:20,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:20,271 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] [2023-08-25 07:02:20,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 07:02:20,271 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:02:20,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:20,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1646170910, now seen corresponding path program 1 times [2023-08-25 07:02:20,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:20,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027161237] [2023-08-25 07:02:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:20,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 07:02:20,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:20,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027161237] [2023-08-25 07:02:20,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027161237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:02:20,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:02:20,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:02:20,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970917318] [2023-08-25 07:02:20,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:02:20,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 07:02:20,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:20,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 07:02:20,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 07:02:20,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 759 [2023-08-25 07:02:20,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 122 flow. Second operand has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:20,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:20,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 759 [2023-08-25 07:02:20,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:21,045 INFO L124 PetriNetUnfolderBase]: 980/1323 cut-off events. [2023-08-25 07:02:21,046 INFO L125 PetriNetUnfolderBase]: For 529/553 co-relation queries the response was YES. [2023-08-25 07:02:21,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3730 conditions, 1323 events. 980/1323 cut-off events. For 529/553 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4501 event pairs, 533 based on Foata normal form. 0/878 useless extension candidates. Maximal degree in co-relation 3722. Up to 1278 conditions per place. [2023-08-25 07:02:21,055 INFO L140 encePairwiseOnDemand]: 754/759 looper letters, 42 selfloop transitions, 4 changer transitions 0/49 dead transitions. [2023-08-25 07:02:21,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 244 flow [2023-08-25 07:02:21,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:02:21,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:02:21,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1623 transitions. [2023-08-25 07:02:21,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3563899868247694 [2023-08-25 07:02:21,060 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1623 transitions. [2023-08-25 07:02:21,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1623 transitions. [2023-08-25 07:02:21,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:21,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1623 transitions. [2023-08-25 07:02:21,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.5) internal successors, (1623), 6 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:21,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:21,072 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:21,072 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 122 flow. Second operand 6 states and 1623 transitions. [2023-08-25 07:02:21,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 244 flow [2023-08-25 07:02:21,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 49 transitions, 240 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 07:02:21,075 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 124 flow [2023-08-25 07:02:21,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=124, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-08-25 07:02:21,078 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -62 predicate places. [2023-08-25 07:02:21,078 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 124 flow [2023-08-25 07:02:21,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:21,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:21,079 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] [2023-08-25 07:02:21,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 07:02:21,079 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:02:21,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:21,080 INFO L85 PathProgramCache]: Analyzing trace with hash 311490001, now seen corresponding path program 1 times [2023-08-25 07:02:21,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:21,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320669217] [2023-08-25 07:02:21,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:21,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 07:02:21,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:21,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320669217] [2023-08-25 07:02:21,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320669217] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:02:21,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:02:21,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:02:21,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121548829] [2023-08-25 07:02:21,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:02:21,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:02:21,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:21,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:02:21,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:02:21,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 759 [2023-08-25 07:02:21,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:21,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:21,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 759 [2023-08-25 07:02:21,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:21,334 INFO L124 PetriNetUnfolderBase]: 340/529 cut-off events. [2023-08-25 07:02:21,335 INFO L125 PetriNetUnfolderBase]: For 147/178 co-relation queries the response was YES. [2023-08-25 07:02:21,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1428 conditions, 529 events. 340/529 cut-off events. For 147/178 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1709 event pairs, 48 based on Foata normal form. 11/362 useless extension candidates. Maximal degree in co-relation 1420. Up to 390 conditions per place. [2023-08-25 07:02:21,339 INFO L140 encePairwiseOnDemand]: 754/759 looper letters, 33 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-25 07:02:21,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 51 transitions, 228 flow [2023-08-25 07:02:21,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:02:21,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:02:21,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 921 transitions. [2023-08-25 07:02:21,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4044795783926219 [2023-08-25 07:02:21,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 921 transitions. [2023-08-25 07:02:21,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 921 transitions. [2023-08-25 07:02:21,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:21,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 921 transitions. [2023-08-25 07:02:21,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 307.0) internal successors, (921), 3 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:21,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 759.0) internal successors, (3036), 4 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:21,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 759.0) internal successors, (3036), 4 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:21,348 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 124 flow. Second operand 3 states and 921 transitions. [2023-08-25 07:02:21,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 51 transitions, 228 flow [2023-08-25 07:02:21,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 51 transitions, 221 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 07:02:21,352 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 142 flow [2023-08-25 07:02:21,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-08-25 07:02:21,355 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -63 predicate places. [2023-08-25 07:02:21,355 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 142 flow [2023-08-25 07:02:21,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.0) internal successors, (906), 3 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:21,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:21,361 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] [2023-08-25 07:02:21,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 07:02:21,361 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:02:21,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:21,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1178469717, now seen corresponding path program 2 times [2023-08-25 07:02:21,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:21,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396100627] [2023-08-25 07:02:21,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:21,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:21,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 07:02:21,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:21,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396100627] [2023-08-25 07:02:21,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396100627] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:02:21,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:02:21,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:02:21,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149576218] [2023-08-25 07:02:21,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:02:21,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 07:02:21,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:21,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 07:02:21,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-25 07:02:21,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 759 [2023-08-25 07:02:21,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 290.14285714285717) internal successors, (2031), 7 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:21,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:21,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 759 [2023-08-25 07:02:21,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:22,215 INFO L124 PetriNetUnfolderBase]: 499/897 cut-off events. [2023-08-25 07:02:22,215 INFO L125 PetriNetUnfolderBase]: For 417/524 co-relation queries the response was YES. [2023-08-25 07:02:22,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2584 conditions, 897 events. 499/897 cut-off events. For 417/524 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3922 event pairs, 125 based on Foata normal form. 12/680 useless extension candidates. Maximal degree in co-relation 2575. Up to 302 conditions per place. [2023-08-25 07:02:22,221 INFO L140 encePairwiseOnDemand]: 752/759 looper letters, 65 selfloop transitions, 8 changer transitions 2/89 dead transitions. [2023-08-25 07:02:22,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 476 flow [2023-08-25 07:02:22,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:02:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:02:22,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1790 transitions. [2023-08-25 07:02:22,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3930610452349583 [2023-08-25 07:02:22,227 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1790 transitions. [2023-08-25 07:02:22,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1790 transitions. [2023-08-25 07:02:22,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:22,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1790 transitions. [2023-08-25 07:02:22,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 298.3333333333333) internal successors, (1790), 6 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:22,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:22,248 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:22,248 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 142 flow. Second operand 6 states and 1790 transitions. [2023-08-25 07:02:22,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 476 flow [2023-08-25 07:02:22,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 89 transitions, 425 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-25 07:02:22,251 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 185 flow [2023-08-25 07:02:22,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-08-25 07:02:22,251 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -57 predicate places. [2023-08-25 07:02:22,252 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 185 flow [2023-08-25 07:02:22,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 290.14285714285717) internal successors, (2031), 7 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:22,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:22,253 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 07:02:22,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 07:02:22,253 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:02:22,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:22,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2139107826, now seen corresponding path program 1 times [2023-08-25 07:02:22,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:22,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506663551] [2023-08-25 07:02:22,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:22,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 07:02:22,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:22,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506663551] [2023-08-25 07:02:22,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506663551] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:02:22,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:02:22,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 07:02:22,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584553521] [2023-08-25 07:02:22,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:02:22,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 07:02:22,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:22,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 07:02:22,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 07:02:22,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 759 [2023-08-25 07:02:22,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:22,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:22,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 759 [2023-08-25 07:02:22,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:22,457 INFO L124 PetriNetUnfolderBase]: 328/627 cut-off events. [2023-08-25 07:02:22,458 INFO L125 PetriNetUnfolderBase]: For 334/347 co-relation queries the response was YES. [2023-08-25 07:02:22,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1763 conditions, 627 events. 328/627 cut-off events. For 334/347 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2520 event pairs, 92 based on Foata normal form. 9/538 useless extension candidates. Maximal degree in co-relation 1752. Up to 496 conditions per place. [2023-08-25 07:02:22,462 INFO L140 encePairwiseOnDemand]: 755/759 looper letters, 34 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-08-25 07:02:22,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 260 flow [2023-08-25 07:02:22,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 07:02:22,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 07:02:22,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 917 transitions. [2023-08-25 07:02:22,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40272288098375053 [2023-08-25 07:02:22,464 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 917 transitions. [2023-08-25 07:02:22,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 917 transitions. [2023-08-25 07:02:22,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:22,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 917 transitions. [2023-08-25 07:02:22,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 305.6666666666667) internal successors, (917), 3 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:22,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 759.0) internal successors, (3036), 4 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:22,469 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 759.0) internal successors, (3036), 4 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:22,470 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 185 flow. Second operand 3 states and 917 transitions. [2023-08-25 07:02:22,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 260 flow [2023-08-25 07:02:22,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 248 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-25 07:02:22,471 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 173 flow [2023-08-25 07:02:22,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2023-08-25 07:02:22,472 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -56 predicate places. [2023-08-25 07:02:22,473 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 173 flow [2023-08-25 07:02:22,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 302.3333333333333) internal successors, (907), 3 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:22,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:22,473 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 07:02:22,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 07:02:22,473 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:02:22,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:22,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1959147371, now seen corresponding path program 1 times [2023-08-25 07:02:22,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:22,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978256816] [2023-08-25 07:02:22,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:22,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:22,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:22,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:22,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978256816] [2023-08-25 07:02:22,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978256816] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:02:22,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647930210] [2023-08-25 07:02:22,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:22,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:02:22,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:02:22,673 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 07:02:22,694 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 07:02:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:22,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 07:02:22,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:02:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:23,008 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:02:23,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:23,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647930210] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:02:23,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:02:23,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-25 07:02:23,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2166032] [2023-08-25 07:02:23,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:02:23,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 07:02:23,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:23,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 07:02:23,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-08-25 07:02:23,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 759 [2023-08-25 07:02:23,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 173 flow. Second operand has 11 states, 11 states have (on average 260.72727272727275) internal successors, (2868), 11 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:23,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:23,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 759 [2023-08-25 07:02:23,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:23,402 INFO L124 PetriNetUnfolderBase]: 507/1046 cut-off events. [2023-08-25 07:02:23,402 INFO L125 PetriNetUnfolderBase]: For 762/774 co-relation queries the response was YES. [2023-08-25 07:02:23,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2906 conditions, 1046 events. 507/1046 cut-off events. For 762/774 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5314 event pairs, 214 based on Foata normal form. 50/942 useless extension candidates. Maximal degree in co-relation 2894. Up to 508 conditions per place. [2023-08-25 07:02:23,409 INFO L140 encePairwiseOnDemand]: 754/759 looper letters, 58 selfloop transitions, 5 changer transitions 2/80 dead transitions. [2023-08-25 07:02:23,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 80 transitions, 428 flow [2023-08-25 07:02:23,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:02:23,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:02:23,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1603 transitions. [2023-08-25 07:02:23,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519982433025911 [2023-08-25 07:02:23,414 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1603 transitions. [2023-08-25 07:02:23,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1603 transitions. [2023-08-25 07:02:23,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:23,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1603 transitions. [2023-08-25 07:02:23,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.1666666666667) internal successors, (1603), 6 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:23,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:23,426 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:23,427 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 173 flow. Second operand 6 states and 1603 transitions. [2023-08-25 07:02:23,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 80 transitions, 428 flow [2023-08-25 07:02:23,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 07:02:23,431 INFO L231 Difference]: Finished difference. Result has 64 places, 50 transitions, 212 flow [2023-08-25 07:02:23,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=64, PETRI_TRANSITIONS=50} [2023-08-25 07:02:23,432 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -50 predicate places. [2023-08-25 07:02:23,432 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 50 transitions, 212 flow [2023-08-25 07:02:23,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 260.72727272727275) internal successors, (2868), 11 states have internal predecessors, (2868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:23,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:23,434 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 07:02:23,444 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 07:02:23,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-25 07:02:23,641 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:02:23,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:23,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1457213602, now seen corresponding path program 2 times [2023-08-25 07:02:23,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:23,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773507532] [2023-08-25 07:02:23,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:23,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:23,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:23,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773507532] [2023-08-25 07:02:23,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773507532] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:02:23,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675045645] [2023-08-25 07:02:23,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:02:23,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:02:23,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:02:23,831 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 07:02:23,835 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 07:02:24,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:02:24,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:02:24,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 07:02:24,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:02:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:24,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:02:24,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:24,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675045645] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:02:24,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:02:24,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2023-08-25 07:02:24,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936321139] [2023-08-25 07:02:24,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:02:24,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 07:02:24,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:24,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 07:02:24,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-25 07:02:24,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 759 [2023-08-25 07:02:24,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 50 transitions, 212 flow. Second operand has 13 states, 13 states have (on average 258.53846153846155) internal successors, (3361), 13 states have internal predecessors, (3361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:24,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:24,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 759 [2023-08-25 07:02:24,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:25,258 INFO L124 PetriNetUnfolderBase]: 794/1503 cut-off events. [2023-08-25 07:02:25,259 INFO L125 PetriNetUnfolderBase]: For 1384/1447 co-relation queries the response was YES. [2023-08-25 07:02:25,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4566 conditions, 1503 events. 794/1503 cut-off events. For 1384/1447 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8072 event pairs, 132 based on Foata normal form. 95/1319 useless extension candidates. Maximal degree in co-relation 4551. Up to 591 conditions per place. [2023-08-25 07:02:25,269 INFO L140 encePairwiseOnDemand]: 751/759 looper letters, 73 selfloop transitions, 11 changer transitions 4/103 dead transitions. [2023-08-25 07:02:25,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 103 transitions, 620 flow [2023-08-25 07:02:25,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 07:02:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 07:02:25,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2126 transitions. [2023-08-25 07:02:25,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35013175230566534 [2023-08-25 07:02:25,276 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2126 transitions. [2023-08-25 07:02:25,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2126 transitions. [2023-08-25 07:02:25,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:25,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2126 transitions. [2023-08-25 07:02:25,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 265.75) internal successors, (2126), 8 states have internal predecessors, (2126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:25,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 759.0) internal successors, (6831), 9 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:25,288 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 759.0) internal successors, (6831), 9 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:25,288 INFO L175 Difference]: Start difference. First operand has 64 places, 50 transitions, 212 flow. Second operand 8 states and 2126 transitions. [2023-08-25 07:02:25,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 103 transitions, 620 flow [2023-08-25 07:02:25,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 103 transitions, 588 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-08-25 07:02:25,292 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 261 flow [2023-08-25 07:02:25,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=261, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2023-08-25 07:02:25,292 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, -43 predicate places. [2023-08-25 07:02:25,292 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 261 flow [2023-08-25 07:02:25,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 258.53846153846155) internal successors, (3361), 13 states have internal predecessors, (3361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:25,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:25,293 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] [2023-08-25 07:02:25,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 07:02:25,501 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,SelfDestructingSolverStorable10 [2023-08-25 07:02:25,501 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:02:25,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:25,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2035646904, now seen corresponding path program 2 times [2023-08-25 07:02:25,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:25,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421442123] [2023-08-25 07:02:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:25,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:26,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:26,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421442123] [2023-08-25 07:02:26,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421442123] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:02:26,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108477516] [2023-08-25 07:02:26,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:02:26,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:02:26,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:02:26,608 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 07:02:26,611 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 07:02:27,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:02:27,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:02:27,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-25 07:02:27,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:02:27,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:02:27,312 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 07:02:27,361 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2023-08-25 07:02:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:27,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:02:27,566 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:02:27,566 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 37 [2023-08-25 07:02:27,572 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-25 07:02:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:27,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108477516] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:02:27,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:02:27,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2023-08-25 07:02:27,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771035291] [2023-08-25 07:02:27,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:02:27,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 07:02:27,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:27,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 07:02:27,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=456, Unknown=5, NotChecked=0, Total=552 [2023-08-25 07:02:27,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 759 [2023-08-25 07:02:27,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 261 flow. Second operand has 24 states, 24 states have (on average 230.54166666666666) internal successors, (5533), 24 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:27,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:27,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 759 [2023-08-25 07:02:27,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:33,650 INFO L124 PetriNetUnfolderBase]: 6342/11467 cut-off events. [2023-08-25 07:02:33,650 INFO L125 PetriNetUnfolderBase]: For 16102/16923 co-relation queries the response was YES. [2023-08-25 07:02:33,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37384 conditions, 11467 events. 6342/11467 cut-off events. For 16102/16923 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 86654 event pairs, 579 based on Foata normal form. 111/10111 useless extension candidates. Maximal degree in co-relation 37367. Up to 3919 conditions per place. [2023-08-25 07:02:33,745 INFO L140 encePairwiseOnDemand]: 746/759 looper letters, 493 selfloop transitions, 115 changer transitions 1/619 dead transitions. [2023-08-25 07:02:33,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 619 transitions, 3852 flow [2023-08-25 07:02:33,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-25 07:02:33,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-25 07:02:33,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 9418 transitions. [2023-08-25 07:02:33,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.318164926860579 [2023-08-25 07:02:33,768 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 9418 transitions. [2023-08-25 07:02:33,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 9418 transitions. [2023-08-25 07:02:33,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:33,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 9418 transitions. [2023-08-25 07:02:33,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 241.48717948717947) internal successors, (9418), 39 states have internal predecessors, (9418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:33,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 759.0) internal successors, (30360), 40 states have internal predecessors, (30360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:33,824 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 759.0) internal successors, (30360), 40 states have internal predecessors, (30360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:33,824 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 261 flow. Second operand 39 states and 9418 transitions. [2023-08-25 07:02:33,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 619 transitions, 3852 flow [2023-08-25 07:02:33,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 619 transitions, 3659 flow, removed 58 selfloop flow, removed 4 redundant places. [2023-08-25 07:02:33,948 INFO L231 Difference]: Finished difference. Result has 128 places, 188 transitions, 1469 flow [2023-08-25 07:02:33,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1469, PETRI_PLACES=128, PETRI_TRANSITIONS=188} [2023-08-25 07:02:33,950 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 14 predicate places. [2023-08-25 07:02:33,951 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 188 transitions, 1469 flow [2023-08-25 07:02:33,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 230.54166666666666) internal successors, (5533), 24 states have internal predecessors, (5533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:33,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:33,952 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] [2023-08-25 07:02:33,962 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 07:02:34,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:02:34,160 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:02:34,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:34,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2067262521, now seen corresponding path program 3 times [2023-08-25 07:02:34,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:34,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228868465] [2023-08-25 07:02:34,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:34,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:34,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-25 07:02:34,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:34,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228868465] [2023-08-25 07:02:34,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228868465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:02:34,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:02:34,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 07:02:34,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718303442] [2023-08-25 07:02:34,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:02:34,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:02:34,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:34,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:02:34,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:02:34,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 759 [2023-08-25 07:02:34,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 188 transitions, 1469 flow. Second operand has 5 states, 5 states have (on average 299.4) internal successors, (1497), 5 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:34,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:34,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 759 [2023-08-25 07:02:34,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:36,710 INFO L124 PetriNetUnfolderBase]: 6897/15086 cut-off events. [2023-08-25 07:02:36,710 INFO L125 PetriNetUnfolderBase]: For 51952/52542 co-relation queries the response was YES. [2023-08-25 07:02:36,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56732 conditions, 15086 events. 6897/15086 cut-off events. For 51952/52542 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 141948 event pairs, 1254 based on Foata normal form. 524/14598 useless extension candidates. Maximal degree in co-relation 56693. Up to 5140 conditions per place. [2023-08-25 07:02:36,981 INFO L140 encePairwiseOnDemand]: 754/759 looper letters, 252 selfloop transitions, 56 changer transitions 0/329 dead transitions. [2023-08-25 07:02:36,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 329 transitions, 3246 flow [2023-08-25 07:02:36,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 07:02:36,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 07:02:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1236 transitions. [2023-08-25 07:02:36,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40711462450592883 [2023-08-25 07:02:36,985 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1236 transitions. [2023-08-25 07:02:36,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1236 transitions. [2023-08-25 07:02:36,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:36,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1236 transitions. [2023-08-25 07:02:36,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:36,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:36,991 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:36,991 INFO L175 Difference]: Start difference. First operand has 128 places, 188 transitions, 1469 flow. Second operand 4 states and 1236 transitions. [2023-08-25 07:02:36,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 329 transitions, 3246 flow [2023-08-25 07:02:37,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 329 transitions, 2566 flow, removed 335 selfloop flow, removed 5 redundant places. [2023-08-25 07:02:37,244 INFO L231 Difference]: Finished difference. Result has 128 places, 216 transitions, 1597 flow [2023-08-25 07:02:37,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1597, PETRI_PLACES=128, PETRI_TRANSITIONS=216} [2023-08-25 07:02:37,245 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 14 predicate places. [2023-08-25 07:02:37,245 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 216 transitions, 1597 flow [2023-08-25 07:02:37,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 299.4) internal successors, (1497), 5 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:37,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:37,246 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] [2023-08-25 07:02:37,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-25 07:02:37,246 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:02:37,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:37,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1715853280, now seen corresponding path program 3 times [2023-08-25 07:02:37,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:37,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271394691] [2023-08-25 07:02:37,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:37,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:38,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:38,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:38,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271394691] [2023-08-25 07:02:38,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271394691] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:02:38,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227210179] [2023-08-25 07:02:38,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 07:02:38,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:02:38,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:02:38,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:02:38,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 07:02:39,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 07:02:39,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:02:39,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-25 07:02:39,723 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:02:39,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:02:39,963 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 07:02:40,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:02:40,073 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 07:02:40,135 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-25 07:02:40,137 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:02:40,137 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 10 [2023-08-25 07:02:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:40,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:02:40,315 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:02:40,315 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 151 [2023-08-25 07:02:40,323 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 58 [2023-08-25 07:02:40,327 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2023-08-25 07:02:40,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:40,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227210179] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:02:40,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:02:40,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-08-25 07:02:40,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82581935] [2023-08-25 07:02:40,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:02:40,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-25 07:02:40,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:40,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-25 07:02:40,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2023-08-25 07:02:40,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 759 [2023-08-25 07:02:40,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 216 transitions, 1597 flow. Second operand has 28 states, 28 states have (on average 221.32142857142858) internal successors, (6197), 28 states have internal predecessors, (6197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:40,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:40,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 759 [2023-08-25 07:02:40,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:02:43,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 07:02:50,308 INFO L124 PetriNetUnfolderBase]: 21018/35265 cut-off events. [2023-08-25 07:02:50,309 INFO L125 PetriNetUnfolderBase]: For 192972/194077 co-relation queries the response was YES. [2023-08-25 07:02:50,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152927 conditions, 35265 events. 21018/35265 cut-off events. For 192972/194077 co-relation queries the response was YES. Maximal size of possible extension queue 1382. Compared 291865 event pairs, 3175 based on Foata normal form. 1203/33839 useless extension candidates. Maximal degree in co-relation 152888. Up to 12619 conditions per place. [2023-08-25 07:02:50,695 INFO L140 encePairwiseOnDemand]: 747/759 looper letters, 603 selfloop transitions, 315 changer transitions 0/924 dead transitions. [2023-08-25 07:02:50,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 924 transitions, 8874 flow [2023-08-25 07:02:50,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-25 07:02:50,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-25 07:02:50,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 6882 transitions. [2023-08-25 07:02:50,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30223978919631095 [2023-08-25 07:02:50,711 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 6882 transitions. [2023-08-25 07:02:50,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 6882 transitions. [2023-08-25 07:02:50,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:02:50,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 6882 transitions. [2023-08-25 07:02:50,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 229.4) internal successors, (6882), 30 states have internal predecessors, (6882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:50,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 759.0) internal successors, (23529), 31 states have internal predecessors, (23529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:50,753 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 759.0) internal successors, (23529), 31 states have internal predecessors, (23529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:50,753 INFO L175 Difference]: Start difference. First operand has 128 places, 216 transitions, 1597 flow. Second operand 30 states and 6882 transitions. [2023-08-25 07:02:50,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 924 transitions, 8874 flow [2023-08-25 07:02:51,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 924 transitions, 8644 flow, removed 115 selfloop flow, removed 0 redundant places. [2023-08-25 07:02:51,959 INFO L231 Difference]: Finished difference. Result has 173 places, 500 transitions, 4993 flow [2023-08-25 07:02:51,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4993, PETRI_PLACES=173, PETRI_TRANSITIONS=500} [2023-08-25 07:02:51,960 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 59 predicate places. [2023-08-25 07:02:51,960 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 500 transitions, 4993 flow [2023-08-25 07:02:51,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 221.32142857142858) internal successors, (6197), 28 states have internal predecessors, (6197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:51,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:02:51,962 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] [2023-08-25 07:02:51,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 07:02:52,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:02:52,170 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:02:52,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:02:52,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1318232646, now seen corresponding path program 4 times [2023-08-25 07:02:52,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:02:52,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078078475] [2023-08-25 07:02:52,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:02:52,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:02:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:02:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:02:52,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:02:52,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078078475] [2023-08-25 07:02:52,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078078475] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:02:52,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346638354] [2023-08-25 07:02:52,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 07:02:52,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:02:52,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:02:52,985 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:02:52,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 07:02:55,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 07:02:55,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:02:55,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-25 07:02:55,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:02:55,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:02:55,441 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 07:02:55,490 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 07:02:55,490 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-08-25 07:02:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-25 07:02:55,516 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 07:02:55,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346638354] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:02:55,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 07:02:55,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2023-08-25 07:02:55,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250504551] [2023-08-25 07:02:55,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:02:55,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 07:02:55,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:02:55,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 07:02:55,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-08-25 07:02:55,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 759 [2023-08-25 07:02:55,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 500 transitions, 4993 flow. Second operand has 7 states, 7 states have (on average 254.85714285714286) internal successors, (1784), 7 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:02:55,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:02:55,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 759 [2023-08-25 07:02:55,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:03:03,114 INFO L124 PetriNetUnfolderBase]: 20109/37478 cut-off events. [2023-08-25 07:03:03,114 INFO L125 PetriNetUnfolderBase]: For 271595/273124 co-relation queries the response was YES. [2023-08-25 07:03:03,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177546 conditions, 37478 events. 20109/37478 cut-off events. For 271595/273124 co-relation queries the response was YES. Maximal size of possible extension queue 1809. Compared 353399 event pairs, 5996 based on Foata normal form. 872/37694 useless extension candidates. Maximal degree in co-relation 177491. Up to 25005 conditions per place. [2023-08-25 07:03:03,898 INFO L140 encePairwiseOnDemand]: 752/759 looper letters, 660 selfloop transitions, 112 changer transitions 0/782 dead transitions. [2023-08-25 07:03:03,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 782 transitions, 9573 flow [2023-08-25 07:03:03,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 07:03:03,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 07:03:03,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2086 transitions. [2023-08-25 07:03:03,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3435441370223979 [2023-08-25 07:03:03,906 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2086 transitions. [2023-08-25 07:03:03,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2086 transitions. [2023-08-25 07:03:03,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:03:03,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2086 transitions. [2023-08-25 07:03:03,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 260.75) internal successors, (2086), 8 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:03,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 759.0) internal successors, (6831), 9 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:03,923 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 759.0) internal successors, (6831), 9 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:03,923 INFO L175 Difference]: Start difference. First operand has 173 places, 500 transitions, 4993 flow. Second operand 8 states and 2086 transitions. [2023-08-25 07:03:03,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 782 transitions, 9573 flow [2023-08-25 07:03:06,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 782 transitions, 9434 flow, removed 54 selfloop flow, removed 9 redundant places. [2023-08-25 07:03:06,601 INFO L231 Difference]: Finished difference. Result has 175 places, 595 transitions, 6337 flow [2023-08-25 07:03:06,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=4888, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6337, PETRI_PLACES=175, PETRI_TRANSITIONS=595} [2023-08-25 07:03:06,601 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 61 predicate places. [2023-08-25 07:03:06,601 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 595 transitions, 6337 flow [2023-08-25 07:03:06,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 254.85714285714286) internal successors, (1784), 7 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:06,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:03:06,602 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] [2023-08-25 07:03:06,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-25 07:03:06,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-25 07:03:06,803 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:03:06,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:03:06,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1533152700, now seen corresponding path program 5 times [2023-08-25 07:03:06,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:03:06,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19290133] [2023-08-25 07:03:06,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:03:06,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:03:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:03:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:03:09,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:03:09,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19290133] [2023-08-25 07:03:09,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19290133] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:03:09,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129181893] [2023-08-25 07:03:09,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 07:03:09,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:09,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:03:09,455 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:03:09,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 07:03:10,129 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:03:10,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:03:10,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 07:03:10,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:03:10,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:03:10,296 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 07:03:10,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:03:10,366 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 07:03:10,430 INFO L322 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-08-25 07:03:10,431 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2023-08-25 07:03:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-25 07:03:10,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 07:03:10,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129181893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:03:10,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 07:03:10,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 17 [2023-08-25 07:03:10,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114762274] [2023-08-25 07:03:10,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:03:10,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-25 07:03:10,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:03:10,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-25 07:03:10,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2023-08-25 07:03:10,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 759 [2023-08-25 07:03:10,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 595 transitions, 6337 flow. Second operand has 8 states, 8 states have (on average 245.875) internal successors, (1967), 8 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:10,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:03:10,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 759 [2023-08-25 07:03:10,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:03:22,546 INFO L124 PetriNetUnfolderBase]: 33021/54206 cut-off events. [2023-08-25 07:03:22,546 INFO L125 PetriNetUnfolderBase]: For 566043/568007 co-relation queries the response was YES. [2023-08-25 07:03:23,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294757 conditions, 54206 events. 33021/54206 cut-off events. For 566043/568007 co-relation queries the response was YES. Maximal size of possible extension queue 2136. Compared 459045 event pairs, 9043 based on Foata normal form. 1110/54890 useless extension candidates. Maximal degree in co-relation 294697. Up to 34834 conditions per place. [2023-08-25 07:03:23,397 INFO L140 encePairwiseOnDemand]: 753/759 looper letters, 614 selfloop transitions, 205 changer transitions 1/826 dead transitions. [2023-08-25 07:03:23,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 826 transitions, 10531 flow [2023-08-25 07:03:23,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 07:03:23,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 07:03:23,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2022 transitions. [2023-08-25 07:03:23,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33300395256917 [2023-08-25 07:03:23,401 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2022 transitions. [2023-08-25 07:03:23,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2022 transitions. [2023-08-25 07:03:23,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:03:23,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2022 transitions. [2023-08-25 07:03:23,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 252.75) internal successors, (2022), 8 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:23,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 759.0) internal successors, (6831), 9 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:23,409 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 759.0) internal successors, (6831), 9 states have internal predecessors, (6831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:23,410 INFO L175 Difference]: Start difference. First operand has 175 places, 595 transitions, 6337 flow. Second operand 8 states and 2022 transitions. [2023-08-25 07:03:23,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 826 transitions, 10531 flow [2023-08-25 07:03:29,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 826 transitions, 10396 flow, removed 57 selfloop flow, removed 2 redundant places. [2023-08-25 07:03:29,211 INFO L231 Difference]: Finished difference. Result has 184 places, 664 transitions, 7876 flow [2023-08-25 07:03:29,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=6202, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7876, PETRI_PLACES=184, PETRI_TRANSITIONS=664} [2023-08-25 07:03:29,212 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 70 predicate places. [2023-08-25 07:03:29,212 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 664 transitions, 7876 flow [2023-08-25 07:03:29,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 245.875) internal successors, (1967), 8 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:29,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:03:29,213 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 07:03:29,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 07:03:29,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 07:03:29,421 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:03:29,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:03:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1539549323, now seen corresponding path program 6 times [2023-08-25 07:03:29,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:03:29,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088512837] [2023-08-25 07:03:29,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:03:29,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:03:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:03:31,431 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:03:31,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:03:31,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088512837] [2023-08-25 07:03:31,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088512837] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:03:31,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598394617] [2023-08-25 07:03:31,432 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 07:03:31,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:31,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:03:31,437 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:03:31,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 07:03:33,953 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 07:03:33,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:03:33,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 07:03:33,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:03:34,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:03:34,078 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 07:03:34,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-25 07:03:34,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:03:34,201 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1884 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1884) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2023-08-25 07:03:34,212 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:03:34,212 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 37 [2023-08-25 07:03:34,220 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-08-25 07:03:34,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 07:03:34,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598394617] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:03:34,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:03:34,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7, 6] total 24 [2023-08-25 07:03:34,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870133056] [2023-08-25 07:03:34,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:03:34,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 07:03:34,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:03:34,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 07:03:34,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=492, Unknown=1, NotChecked=44, Total=600 [2023-08-25 07:03:34,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 759 [2023-08-25 07:03:34,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 664 transitions, 7876 flow. Second operand has 25 states, 25 states have (on average 221.6) internal successors, (5540), 25 states have internal predecessors, (5540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:34,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:03:34,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 759 [2023-08-25 07:03:34,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:03:46,641 INFO L124 PetriNetUnfolderBase]: 27802/49922 cut-off events. [2023-08-25 07:03:46,641 INFO L125 PetriNetUnfolderBase]: For 474927/477354 co-relation queries the response was YES. [2023-08-25 07:03:47,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275508 conditions, 49922 events. 27802/49922 cut-off events. For 474927/477354 co-relation queries the response was YES. Maximal size of possible extension queue 2362. Compared 466925 event pairs, 5364 based on Foata normal form. 886/50355 useless extension candidates. Maximal degree in co-relation 275443. Up to 22145 conditions per place. [2023-08-25 07:03:47,455 INFO L140 encePairwiseOnDemand]: 746/759 looper letters, 772 selfloop transitions, 467 changer transitions 224/1473 dead transitions. [2023-08-25 07:03:47,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 1473 transitions, 19569 flow [2023-08-25 07:03:47,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-25 07:03:47,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-25 07:03:47,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4304 transitions. [2023-08-25 07:03:47,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29845364399140145 [2023-08-25 07:03:47,463 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4304 transitions. [2023-08-25 07:03:47,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4304 transitions. [2023-08-25 07:03:47,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:03:47,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4304 transitions. [2023-08-25 07:03:47,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 226.52631578947367) internal successors, (4304), 19 states have internal predecessors, (4304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:47,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 759.0) internal successors, (15180), 20 states have internal predecessors, (15180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:47,484 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 759.0) internal successors, (15180), 20 states have internal predecessors, (15180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:47,484 INFO L175 Difference]: Start difference. First operand has 184 places, 664 transitions, 7876 flow. Second operand 19 states and 4304 transitions. [2023-08-25 07:03:47,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 1473 transitions, 19569 flow [2023-08-25 07:03:55,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 1473 transitions, 19320 flow, removed 112 selfloop flow, removed 2 redundant places. [2023-08-25 07:03:56,004 INFO L231 Difference]: Finished difference. Result has 210 places, 888 transitions, 12195 flow [2023-08-25 07:03:56,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=7695, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=12195, PETRI_PLACES=210, PETRI_TRANSITIONS=888} [2023-08-25 07:03:56,005 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 96 predicate places. [2023-08-25 07:03:56,005 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 888 transitions, 12195 flow [2023-08-25 07:03:56,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 221.6) internal successors, (5540), 25 states have internal predecessors, (5540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:56,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:03:56,006 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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 07:03:56,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 07:03:56,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:56,212 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:03:56,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:03:56,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1732174979, now seen corresponding path program 7 times [2023-08-25 07:03:56,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:03:56,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176794552] [2023-08-25 07:03:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:03:56,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:03:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:03:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:03:58,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:03:58,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176794552] [2023-08-25 07:03:58,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176794552] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:03:58,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558062042] [2023-08-25 07:03:58,554 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 07:03:58,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:03:58,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:03:58,555 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:03:58,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 07:03:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:03:58,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-25 07:03:58,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:03:59,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:03:59,038 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 07:03:59,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 07:03:59,074 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-08-25 07:03:59,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 07:03:59,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:03:59,298 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 07:03:59,299 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 77 [2023-08-25 07:03:59,304 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 52 [2023-08-25 07:03:59,308 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2023-08-25 07:03:59,518 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-25 07:03:59,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558062042] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:03:59,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:03:59,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 31 [2023-08-25 07:03:59,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754338843] [2023-08-25 07:03:59,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:03:59,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 07:03:59,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:03:59,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 07:03:59,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=882, Unknown=8, NotChecked=0, Total=992 [2023-08-25 07:03:59,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 759 [2023-08-25 07:03:59,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 888 transitions, 12195 flow. Second operand has 32 states, 32 states have (on average 202.28125) internal successors, (6473), 32 states have internal predecessors, (6473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:03:59,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:03:59,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 759 [2023-08-25 07:03:59,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:04:18,339 INFO L124 PetriNetUnfolderBase]: 37779/62869 cut-off events. [2023-08-25 07:04:18,340 INFO L125 PetriNetUnfolderBase]: For 799913/802752 co-relation queries the response was YES. [2023-08-25 07:04:19,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391362 conditions, 62869 events. 37779/62869 cut-off events. For 799913/802752 co-relation queries the response was YES. Maximal size of possible extension queue 2381. Compared 550147 event pairs, 7184 based on Foata normal form. 1383/63825 useless extension candidates. Maximal degree in co-relation 391287. Up to 26135 conditions per place. [2023-08-25 07:04:19,450 INFO L140 encePairwiseOnDemand]: 746/759 looper letters, 805 selfloop transitions, 603 changer transitions 261/1674 dead transitions. [2023-08-25 07:04:19,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 1674 transitions, 24469 flow [2023-08-25 07:04:19,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-25 07:04:19,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-25 07:04:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4801 transitions. [2023-08-25 07:04:19,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27501861717362663 [2023-08-25 07:04:19,458 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4801 transitions. [2023-08-25 07:04:19,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4801 transitions. [2023-08-25 07:04:19,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:04:19,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4801 transitions. [2023-08-25 07:04:19,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 208.7391304347826) internal successors, (4801), 23 states have internal predecessors, (4801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:19,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 759.0) internal successors, (18216), 24 states have internal predecessors, (18216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:19,477 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 759.0) internal successors, (18216), 24 states have internal predecessors, (18216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:19,477 INFO L175 Difference]: Start difference. First operand has 210 places, 888 transitions, 12195 flow. Second operand 23 states and 4801 transitions. [2023-08-25 07:04:19,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 1674 transitions, 24469 flow [2023-08-25 07:04:32,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 1674 transitions, 24248 flow, removed 105 selfloop flow, removed 4 redundant places. [2023-08-25 07:04:32,236 INFO L231 Difference]: Finished difference. Result has 236 places, 1025 transitions, 16119 flow [2023-08-25 07:04:32,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=11967, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=880, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=444, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=16119, PETRI_PLACES=236, PETRI_TRANSITIONS=1025} [2023-08-25 07:04:32,237 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 122 predicate places. [2023-08-25 07:04:32,237 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 1025 transitions, 16119 flow [2023-08-25 07:04:32,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 202.28125) internal successors, (6473), 32 states have internal predecessors, (6473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:32,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:04:32,238 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:04:32,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-25 07:04:32,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-25 07:04:32,439 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:04:32,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:04:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash 49920021, now seen corresponding path program 1 times [2023-08-25 07:04:32,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:04:32,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46341260] [2023-08-25 07:04:32,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:04:32,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:04:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:04:32,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-25 07:04:32,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:04:32,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46341260] [2023-08-25 07:04:32,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46341260] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:04:32,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865065140] [2023-08-25 07:04:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:04:32,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:04:32,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:04:32,585 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:04:32,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 07:04:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:04:32,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 07:04:32,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:04:32,979 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-25 07:04:32,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:04:33,044 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-25 07:04:33,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865065140] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:04:33,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:04:33,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-25 07:04:33,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713570778] [2023-08-25 07:04:33,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:04:33,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 07:04:33,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:04:33,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 07:04:33,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-08-25 07:04:33,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 759 [2023-08-25 07:04:33,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 1025 transitions, 16119 flow. Second operand has 11 states, 11 states have (on average 261.3636363636364) internal successors, (2875), 11 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:33,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:04:33,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 759 [2023-08-25 07:04:33,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:04:42,889 INFO L124 PetriNetUnfolderBase]: 19567/36652 cut-off events. [2023-08-25 07:04:42,889 INFO L125 PetriNetUnfolderBase]: For 469284/470603 co-relation queries the response was YES. [2023-08-25 07:04:43,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216533 conditions, 36652 events. 19567/36652 cut-off events. For 469284/470603 co-relation queries the response was YES. Maximal size of possible extension queue 1829. Compared 345410 event pairs, 7386 based on Foata normal form. 952/37160 useless extension candidates. Maximal degree in co-relation 216450. Up to 25041 conditions per place. [2023-08-25 07:04:43,522 INFO L140 encePairwiseOnDemand]: 754/759 looper letters, 693 selfloop transitions, 12 changer transitions 372/1098 dead transitions. [2023-08-25 07:04:43,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 1098 transitions, 18000 flow [2023-08-25 07:04:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 07:04:43,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 07:04:43,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1598 transitions. [2023-08-25 07:04:43,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35090030742204653 [2023-08-25 07:04:43,524 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1598 transitions. [2023-08-25 07:04:43,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1598 transitions. [2023-08-25 07:04:43,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:04:43,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1598 transitions. [2023-08-25 07:04:43,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 266.3333333333333) internal successors, (1598), 6 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:43,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:43,530 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 759.0) internal successors, (5313), 7 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:43,530 INFO L175 Difference]: Start difference. First operand has 236 places, 1025 transitions, 16119 flow. Second operand 6 states and 1598 transitions. [2023-08-25 07:04:43,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 1098 transitions, 18000 flow [2023-08-25 07:04:48,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 1098 transitions, 17477 flow, removed 86 selfloop flow, removed 16 redundant places. [2023-08-25 07:04:48,380 INFO L231 Difference]: Finished difference. Result has 224 places, 726 transitions, 10259 flow [2023-08-25 07:04:48,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=12088, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=822, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10259, PETRI_PLACES=224, PETRI_TRANSITIONS=726} [2023-08-25 07:04:48,381 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 110 predicate places. [2023-08-25 07:04:48,381 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 726 transitions, 10259 flow [2023-08-25 07:04:48,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 261.3636363636364) internal successors, (2875), 11 states have internal predecessors, (2875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:48,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:04:48,382 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:04:48,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 07:04:48,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:04:48,586 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:04:48,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:04:48,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1487733356, now seen corresponding path program 1 times [2023-08-25 07:04:48,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:04:48,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028587937] [2023-08-25 07:04:48,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:04:48,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:04:48,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:04:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-25 07:04:48,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:04:48,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028587937] [2023-08-25 07:04:48,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028587937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:04:48,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:04:48,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:04:48,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599064130] [2023-08-25 07:04:48,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:04:48,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 07:04:48,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:04:48,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 07:04:48,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 07:04:48,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 759 [2023-08-25 07:04:48,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 726 transitions, 10259 flow. Second operand has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:48,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:04:48,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 759 [2023-08-25 07:04:48,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:04:55,852 INFO L124 PetriNetUnfolderBase]: 17053/30920 cut-off events. [2023-08-25 07:04:55,853 INFO L125 PetriNetUnfolderBase]: For 359493/360748 co-relation queries the response was YES. [2023-08-25 07:04:56,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181021 conditions, 30920 events. 17053/30920 cut-off events. For 359493/360748 co-relation queries the response was YES. Maximal size of possible extension queue 1615. Compared 275350 event pairs, 3392 based on Foata normal form. 220/30838 useless extension candidates. Maximal degree in co-relation 180942. Up to 20022 conditions per place. [2023-08-25 07:04:56,347 INFO L140 encePairwiseOnDemand]: 755/759 looper letters, 607 selfloop transitions, 174 changer transitions 16/818 dead transitions. [2023-08-25 07:04:56,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 818 transitions, 13319 flow [2023-08-25 07:04:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 07:04:56,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 07:04:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1235 transitions. [2023-08-25 07:04:56,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4067852437417655 [2023-08-25 07:04:56,354 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1235 transitions. [2023-08-25 07:04:56,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1235 transitions. [2023-08-25 07:04:56,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:04:56,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1235 transitions. [2023-08-25 07:04:56,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 308.75) internal successors, (1235), 4 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:56,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:56,357 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 759.0) internal successors, (3795), 5 states have internal predecessors, (3795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:56,357 INFO L175 Difference]: Start difference. First operand has 224 places, 726 transitions, 10259 flow. Second operand 4 states and 1235 transitions. [2023-08-25 07:04:56,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 818 transitions, 13319 flow [2023-08-25 07:04:59,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 818 transitions, 13030 flow, removed 128 selfloop flow, removed 14 redundant places. [2023-08-25 07:04:59,285 INFO L231 Difference]: Finished difference. Result has 199 places, 714 transitions, 10556 flow [2023-08-25 07:04:59,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=759, PETRI_DIFFERENCE_MINUEND_FLOW=10049, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=10556, PETRI_PLACES=199, PETRI_TRANSITIONS=714} [2023-08-25 07:04:59,286 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 85 predicate places. [2023-08-25 07:04:59,286 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 714 transitions, 10556 flow [2023-08-25 07:04:59,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 301.0) internal successors, (1204), 4 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:04:59,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:04:59,286 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2023-08-25 07:04:59,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-25 07:04:59,286 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err9ASSERT_VIOLATIONDATA_RACE, thread1Err10ASSERT_VIOLATIONDATA_RACE, thread1Err11ASSERT_VIOLATIONDATA_RACE (and 119 more)] === [2023-08-25 07:04:59,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:04:59,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1471567866, now seen corresponding path program 2 times [2023-08-25 07:04:59,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:04:59,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860653861] [2023-08-25 07:04:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:04:59,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:04:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:05:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:05:01,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:05:01,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860653861] [2023-08-25 07:05:01,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860653861] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:05:01,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595993892] [2023-08-25 07:05:01,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:05:01,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:05:01,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:05:01,301 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:05:01,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 07:05:02,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:05:02,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:05:02,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-25 07:05:02,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:05:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:05:02,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:05:03,369 INFO L322 Elim1Store]: treesize reduction 23, result has 75.3 percent of original size [2023-08-25 07:05:03,370 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 82 [2023-08-25 07:05:03,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:05:03,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595993892] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:05:03,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:05:03,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 40 [2023-08-25 07:05:03,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266934038] [2023-08-25 07:05:03,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:05:03,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-25 07:05:03,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:05:03,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-25 07:05:03,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1417, Unknown=0, NotChecked=0, Total=1640 [2023-08-25 07:05:03,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 759 [2023-08-25 07:05:03,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 714 transitions, 10556 flow. Second operand has 41 states, 41 states have (on average 200.21951219512195) internal successors, (8209), 41 states have internal predecessors, (8209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:05:03,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:05:03,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 759 [2023-08-25 07:05:03,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:06:11,146 INFO L124 PetriNetUnfolderBase]: 156112/228293 cut-off events. [2023-08-25 07:06:11,146 INFO L125 PetriNetUnfolderBase]: For 2933498/2933502 co-relation queries the response was YES. [2023-08-25 07:06:14,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483231 conditions, 228293 events. 156112/228293 cut-off events. For 2933498/2933502 co-relation queries the response was YES. Maximal size of possible extension queue 7368. Compared 1835078 event pairs, 5976 based on Foata normal form. 5856/233600 useless extension candidates. Maximal degree in co-relation 1483160. Up to 82102 conditions per place. [2023-08-25 07:06:15,422 INFO L140 encePairwiseOnDemand]: 745/759 looper letters, 2572 selfloop transitions, 2434 changer transitions 0/5008 dead transitions. [2023-08-25 07:06:15,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 5008 transitions, 73869 flow [2023-08-25 07:06:15,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-08-25 07:06:15,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-08-25 07:06:15,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 14834 transitions. [2023-08-25 07:06:15,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2832483626434477 [2023-08-25 07:06:15,436 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 14834 transitions. [2023-08-25 07:06:15,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 14834 transitions. [2023-08-25 07:06:15,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:06:15,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 14834 transitions. [2023-08-25 07:06:15,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 214.9855072463768) internal successors, (14834), 69 states have internal predecessors, (14834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:06:15,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 759.0) internal successors, (53130), 70 states have internal predecessors, (53130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:06:15,496 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 759.0) internal successors, (53130), 70 states have internal predecessors, (53130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 07:06:15,496 INFO L175 Difference]: Start difference. First operand has 199 places, 714 transitions, 10556 flow. Second operand 69 states and 14834 transitions. [2023-08-25 07:06:15,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 5008 transitions, 73869 flow