/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_02-funloop_norace.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 17:18:00,383 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 17:18:00,475 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 17:18:00,482 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 17:18:00,483 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 17:18:00,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 17:18:00,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 17:18:00,519 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 17:18:00,520 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 17:18:00,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 17:18:00,523 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 17:18:00,523 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 17:18:00,524 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 17:18:00,525 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 17:18:00,525 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 17:18:00,525 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 17:18:00,525 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 17:18:00,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 17:18:00,526 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 17:18:00,526 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 17:18:00,526 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 17:18:00,527 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 17:18:00,527 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 17:18:00,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 17:18:00,528 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 17:18:00,528 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 17:18:00,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 17:18:00,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:18:00,529 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 17:18:00,529 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 17:18:00,530 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 17:18:00,530 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 17:18:00,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 17:18:00,530 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 17:18:00,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 17:18:00,530 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 17:18:00,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 17:18:00,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 17:18:00,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 17:18:00,884 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 17:18:00,884 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 17:18:00,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_02-funloop_norace.i [2023-08-25 17:18:02,019 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 17:18:02,289 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 17:18:02,289 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_02-funloop_norace.i [2023-08-25 17:18:02,309 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5300b90ff/e8251a0841744038842bcc6be252e554/FLAGa72c5bbd9 [2023-08-25 17:18:02,323 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5300b90ff/e8251a0841744038842bcc6be252e554 [2023-08-25 17:18:02,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 17:18:02,326 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 17:18:02,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 17:18:02,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 17:18:02,329 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 17:18:02,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:18:02" (1/1) ... [2023-08-25 17:18:02,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c5c620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:02, skipping insertion in model container [2023-08-25 17:18:02,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:18:02" (1/1) ... [2023-08-25 17:18:02,382 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 17:18:02,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:18:02,789 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 17:18:02,815 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:18:02,817 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 17:18:02,823 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-25 17:18:02,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 17:18:02,884 INFO L206 MainTranslator]: Completed translation [2023-08-25 17:18:02,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:02 WrapperNode [2023-08-25 17:18:02,885 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 17:18:02,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 17:18:02,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 17:18:02,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 17:18:02,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:02" (1/1) ... [2023-08-25 17:18:02,922 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:02" (1/1) ... [2023-08-25 17:18:02,955 INFO L138 Inliner]: procedures = 262, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-08-25 17:18:02,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 17:18:02,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 17:18:02,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 17:18:02,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 17:18:02,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:02" (1/1) ... [2023-08-25 17:18:02,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:02" (1/1) ... [2023-08-25 17:18:02,977 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:02" (1/1) ... [2023-08-25 17:18:02,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:02" (1/1) ... [2023-08-25 17:18:02,988 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:02" (1/1) ... [2023-08-25 17:18:02,991 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:02" (1/1) ... [2023-08-25 17:18:02,992 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:02" (1/1) ... [2023-08-25 17:18:02,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:02" (1/1) ... [2023-08-25 17:18:03,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 17:18:03,009 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 17:18:03,010 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 17:18:03,010 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 17:18:03,010 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:02" (1/1) ... [2023-08-25 17:18:03,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 17:18:03,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:03,038 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 17:18:03,050 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 17:18:03,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 17:18:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 17:18:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 17:18:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 17:18:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 17:18:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 17:18:03,076 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 17:18:03,076 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 17:18:03,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 17:18:03,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 17:18:03,077 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 17:18:03,246 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 17:18:03,249 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 17:18:03,475 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 17:18:03,481 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 17:18:03,481 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-25 17:18:03,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:18:03 BoogieIcfgContainer [2023-08-25 17:18:03,483 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 17:18:03,484 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 17:18:03,485 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 17:18:03,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 17:18:03,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:18:02" (1/3) ... [2023-08-25 17:18:03,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1b38ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:18:03, skipping insertion in model container [2023-08-25 17:18:03,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:18:02" (2/3) ... [2023-08-25 17:18:03,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1b38ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:18:03, skipping insertion in model container [2023-08-25 17:18:03,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:18:03" (3/3) ... [2023-08-25 17:18:03,489 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2023-08-25 17:18:03,503 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 17:18:03,503 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-25 17:18:03,503 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 17:18:03,547 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 17:18:03,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 101 transitions, 207 flow [2023-08-25 17:18:03,608 INFO L124 PetriNetUnfolderBase]: 6/100 cut-off events. [2023-08-25 17:18:03,608 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:18:03,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 100 events. 6/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 125 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2023-08-25 17:18:03,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 101 transitions, 207 flow [2023-08-25 17:18:03,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 100 transitions, 203 flow [2023-08-25 17:18:03,620 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 17:18:03,627 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 100 transitions, 203 flow [2023-08-25 17:18:03,629 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 100 transitions, 203 flow [2023-08-25 17:18:03,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 100 transitions, 203 flow [2023-08-25 17:18:03,651 INFO L124 PetriNetUnfolderBase]: 6/100 cut-off events. [2023-08-25 17:18:03,652 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:18:03,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 100 events. 6/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 125 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2023-08-25 17:18:03,654 INFO L119 LiptonReduction]: Number of co-enabled transitions 2960 [2023-08-25 17:18:05,019 INFO L134 LiptonReduction]: Checked pairs total: 7963 [2023-08-25 17:18:05,019 INFO L136 LiptonReduction]: Total number of compositions: 63 [2023-08-25 17:18:05,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 17:18:05,036 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;@590beb07, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 17:18:05,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-25 17:18:05,045 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 17:18:05,045 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-08-25 17:18:05,046 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:18:05,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:05,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:05,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:18:05,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:05,053 INFO L85 PathProgramCache]: Analyzing trace with hash 94368560, now seen corresponding path program 1 times [2023-08-25 17:18:05,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:05,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979494333] [2023-08-25 17:18:05,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:05,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:05,323 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 17:18:05,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:05,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979494333] [2023-08-25 17:18:05,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979494333] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:05,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:18:05,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 17:18:05,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109276631] [2023-08-25 17:18:05,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:05,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 17:18:05,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:05,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 17:18:05,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 17:18:05,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 164 [2023-08-25 17:18:05,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:05,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:05,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 164 [2023-08-25 17:18:05,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:05,485 INFO L124 PetriNetUnfolderBase]: 66/251 cut-off events. [2023-08-25 17:18:05,485 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:18:05,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 251 events. 66/251 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1089 event pairs, 49 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 374. Up to 133 conditions per place. [2023-08-25 17:18:05,491 INFO L140 encePairwiseOnDemand]: 161/164 looper letters, 19 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-25 17:18:05,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 127 flow [2023-08-25 17:18:05,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 17:18:05,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 17:18:05,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2023-08-25 17:18:05,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5873983739837398 [2023-08-25 17:18:05,511 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2023-08-25 17:18:05,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2023-08-25 17:18:05,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:05,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2023-08-25 17:18:05,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:05,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:05,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:05,529 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 83 flow. Second operand 3 states and 289 transitions. [2023-08-25 17:18:05,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 127 flow [2023-08-25 17:18:05,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 17:18:05,535 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 94 flow [2023-08-25 17:18:05,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-08-25 17:18:05,541 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-25 17:18:05,544 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 94 flow [2023-08-25 17:18:05,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:05,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:05,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:05,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 17:18:05,545 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:18:05,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:05,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1160896221, now seen corresponding path program 1 times [2023-08-25 17:18:05,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:05,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527932036] [2023-08-25 17:18:05,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:05,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:05,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:05,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527932036] [2023-08-25 17:18:05,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527932036] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:05,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339479066] [2023-08-25 17:18:05,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:05,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:05,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:05,679 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 17:18:05,680 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 17:18:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:05,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 17:18:05,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:05,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:05,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:18:05,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:05,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339479066] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:18:05,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:18:05,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 17:18:05,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369839432] [2023-08-25 17:18:05,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:18:05,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 17:18:05,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:05,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 17:18:05,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 17:18:05,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 164 [2023-08-25 17:18:05,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 94 flow. Second operand has 7 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:05,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:05,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 164 [2023-08-25 17:18:05,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:05,924 INFO L124 PetriNetUnfolderBase]: 66/254 cut-off events. [2023-08-25 17:18:05,924 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 17:18:05,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 254 events. 66/254 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1089 event pairs, 49 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 393. Up to 133 conditions per place. [2023-08-25 17:18:05,926 INFO L140 encePairwiseOnDemand]: 161/164 looper letters, 19 selfloop transitions, 5 changer transitions 0/44 dead transitions. [2023-08-25 17:18:05,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 154 flow [2023-08-25 17:18:05,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:05,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:05,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 561 transitions. [2023-08-25 17:18:05,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701219512195121 [2023-08-25 17:18:05,929 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 561 transitions. [2023-08-25 17:18:05,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 561 transitions. [2023-08-25 17:18:05,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:05,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 561 transitions. [2023-08-25 17:18:05,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 93.5) internal successors, (561), 6 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:05,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:05,934 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:05,934 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 94 flow. Second operand 6 states and 561 transitions. [2023-08-25 17:18:05,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 154 flow [2023-08-25 17:18:05,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 150 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 17:18:05,936 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 126 flow [2023-08-25 17:18:05,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=126, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2023-08-25 17:18:05,937 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2023-08-25 17:18:05,937 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 126 flow [2023-08-25 17:18:05,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:05,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:05,938 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:05,947 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 17:18:06,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:06,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:18:06,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:06,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1125665873, now seen corresponding path program 2 times [2023-08-25 17:18:06,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:06,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60750082] [2023-08-25 17:18:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:06,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:06,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:06,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60750082] [2023-08-25 17:18:06,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60750082] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:06,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600848059] [2023-08-25 17:18:06,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:18:06,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:06,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:06,305 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 17:18:06,306 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 17:18:06,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 17:18:06,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:18:06,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 17:18:06,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:06,489 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 17:18:06,513 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 19 treesize of output 18 [2023-08-25 17:18:06,560 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 17:18:06,560 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:18:06,595 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-25 17:18:06,596 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:18:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-25 17:18:06,627 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 17:18:06,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600848059] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:06,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 17:18:06,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-08-25 17:18:06,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409914333] [2023-08-25 17:18:06,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:06,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 17:18:06,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:06,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 17:18:06,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-25 17:18:06,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 164 [2023-08-25 17:18:06,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 126 flow. Second operand has 9 states, 9 states have (on average 58.333333333333336) internal successors, (525), 9 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:06,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:06,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 164 [2023-08-25 17:18:06,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:07,105 INFO L124 PetriNetUnfolderBase]: 751/1506 cut-off events. [2023-08-25 17:18:07,105 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 17:18:07,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3039 conditions, 1506 events. 751/1506 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6889 event pairs, 302 based on Foata normal form. 0/1273 useless extension candidates. Maximal degree in co-relation 3006. Up to 656 conditions per place. [2023-08-25 17:18:07,113 INFO L140 encePairwiseOnDemand]: 148/164 looper letters, 167 selfloop transitions, 27 changer transitions 0/194 dead transitions. [2023-08-25 17:18:07,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 194 transitions, 814 flow [2023-08-25 17:18:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 17:18:07,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 17:18:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 762 transitions. [2023-08-25 17:18:07,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46463414634146344 [2023-08-25 17:18:07,116 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 762 transitions. [2023-08-25 17:18:07,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 762 transitions. [2023-08-25 17:18:07,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:07,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 762 transitions. [2023-08-25 17:18:07,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.2) internal successors, (762), 10 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:07,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 164.0) internal successors, (1804), 11 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:07,123 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 164.0) internal successors, (1804), 11 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:07,123 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 126 flow. Second operand 10 states and 762 transitions. [2023-08-25 17:18:07,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 194 transitions, 814 flow [2023-08-25 17:18:07,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 194 transitions, 800 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-25 17:18:07,127 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 316 flow [2023-08-25 17:18:07,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=316, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2023-08-25 17:18:07,128 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2023-08-25 17:18:07,128 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 316 flow [2023-08-25 17:18:07,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.333333333333336) internal successors, (525), 9 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:07,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:07,128 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:07,137 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 17:18:07,334 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,SelfDestructingSolverStorable2 [2023-08-25 17:18:07,335 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:18:07,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:07,335 INFO L85 PathProgramCache]: Analyzing trace with hash -379523024, now seen corresponding path program 1 times [2023-08-25 17:18:07,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:07,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401560203] [2023-08-25 17:18:07,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:07,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:07,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:07,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:07,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401560203] [2023-08-25 17:18:07,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401560203] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:07,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236958008] [2023-08-25 17:18:07,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:07,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:07,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:07,489 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 17:18:07,491 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 17:18:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:07,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 17:18:07,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:07,589 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:07,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:18:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 17:18:07,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236958008] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:18:07,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:18:07,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-25 17:18:07,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586611875] [2023-08-25 17:18:07,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:18:07,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 17:18:07,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:07,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 17:18:07,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-25 17:18:07,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 164 [2023-08-25 17:18:07,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 316 flow. Second operand has 13 states, 13 states have (on average 90.38461538461539) internal successors, (1175), 13 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:07,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:07,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 164 [2023-08-25 17:18:07,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:07,765 INFO L124 PetriNetUnfolderBase]: 222/720 cut-off events. [2023-08-25 17:18:07,765 INFO L125 PetriNetUnfolderBase]: For 532/538 co-relation queries the response was YES. [2023-08-25 17:18:07,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 720 events. 222/720 cut-off events. For 532/538 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3630 event pairs, 135 based on Foata normal form. 7/684 useless extension candidates. Maximal degree in co-relation 1765. Up to 364 conditions per place. [2023-08-25 17:18:07,770 INFO L140 encePairwiseOnDemand]: 161/164 looper letters, 27 selfloop transitions, 11 changer transitions 0/75 dead transitions. [2023-08-25 17:18:07,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 75 transitions, 428 flow [2023-08-25 17:18:07,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 17:18:07,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 17:18:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1104 transitions. [2023-08-25 17:18:07,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2023-08-25 17:18:07,773 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1104 transitions. [2023-08-25 17:18:07,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1104 transitions. [2023-08-25 17:18:07,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:07,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1104 transitions. [2023-08-25 17:18:07,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:07,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 164.0) internal successors, (2132), 13 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:07,779 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 164.0) internal successors, (2132), 13 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:07,779 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 316 flow. Second operand 12 states and 1104 transitions. [2023-08-25 17:18:07,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 75 transitions, 428 flow [2023-08-25 17:18:07,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 75 transitions, 427 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 17:18:07,784 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 399 flow [2023-08-25 17:18:07,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=399, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2023-08-25 17:18:07,785 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2023-08-25 17:18:07,785 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 399 flow [2023-08-25 17:18:07,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 90.38461538461539) internal successors, (1175), 13 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:07,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:07,786 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:07,793 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 17:18:07,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:07,992 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:18:07,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:07,993 INFO L85 PathProgramCache]: Analyzing trace with hash -833471568, now seen corresponding path program 2 times [2023-08-25 17:18:07,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:07,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70041720] [2023-08-25 17:18:07,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:07,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:08,345 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:08,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:08,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70041720] [2023-08-25 17:18:08,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70041720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:08,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:18:08,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:18:08,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825591912] [2023-08-25 17:18:08,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:08,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:08,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:08,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:08,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:18:08,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 164 [2023-08-25 17:18:08,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 399 flow. Second operand has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:08,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:08,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 164 [2023-08-25 17:18:08,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:08,742 INFO L124 PetriNetUnfolderBase]: 884/1778 cut-off events. [2023-08-25 17:18:08,742 INFO L125 PetriNetUnfolderBase]: For 1654/1654 co-relation queries the response was YES. [2023-08-25 17:18:08,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5036 conditions, 1778 events. 884/1778 cut-off events. For 1654/1654 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 8777 event pairs, 352 based on Foata normal form. 0/1621 useless extension candidates. Maximal degree in co-relation 4954. Up to 1304 conditions per place. [2023-08-25 17:18:08,753 INFO L140 encePairwiseOnDemand]: 153/164 looper letters, 159 selfloop transitions, 30 changer transitions 0/189 dead transitions. [2023-08-25 17:18:08,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 189 transitions, 1237 flow [2023-08-25 17:18:08,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:08,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 521 transitions. [2023-08-25 17:18:08,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294715447154471 [2023-08-25 17:18:08,756 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 521 transitions. [2023-08-25 17:18:08,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 521 transitions. [2023-08-25 17:18:08,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:08,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 521 transitions. [2023-08-25 17:18:08,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:08,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:08,759 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:08,760 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 399 flow. Second operand 6 states and 521 transitions. [2023-08-25 17:18:08,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 189 transitions, 1237 flow [2023-08-25 17:18:08,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 189 transitions, 1189 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-25 17:18:08,769 INFO L231 Difference]: Finished difference. Result has 85 places, 100 transitions, 575 flow [2023-08-25 17:18:08,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=575, PETRI_PLACES=85, PETRI_TRANSITIONS=100} [2023-08-25 17:18:08,771 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2023-08-25 17:18:08,771 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 100 transitions, 575 flow [2023-08-25 17:18:08,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:08,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:08,771 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:08,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 17:18:08,772 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:18:08,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:08,774 INFO L85 PathProgramCache]: Analyzing trace with hash -931623043, now seen corresponding path program 1 times [2023-08-25 17:18:08,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:08,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642049652] [2023-08-25 17:18:08,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:08,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:09,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:09,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642049652] [2023-08-25 17:18:09,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642049652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:09,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:18:09,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:18:09,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707385721] [2023-08-25 17:18:09,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:09,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:09,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:09,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:18:09,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 164 [2023-08-25 17:18:09,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 100 transitions, 575 flow. Second operand has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:09,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:09,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 164 [2023-08-25 17:18:09,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:09,631 INFO L124 PetriNetUnfolderBase]: 1048/2106 cut-off events. [2023-08-25 17:18:09,631 INFO L125 PetriNetUnfolderBase]: For 2872/2872 co-relation queries the response was YES. [2023-08-25 17:18:09,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7104 conditions, 2106 events. 1048/2106 cut-off events. For 2872/2872 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 10776 event pairs, 378 based on Foata normal form. 0/1968 useless extension candidates. Maximal degree in co-relation 7042. Up to 1744 conditions per place. [2023-08-25 17:18:09,646 INFO L140 encePairwiseOnDemand]: 149/164 looper letters, 146 selfloop transitions, 57 changer transitions 4/207 dead transitions. [2023-08-25 17:18:09,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 207 transitions, 1467 flow [2023-08-25 17:18:09,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:09,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 508 transitions. [2023-08-25 17:18:09,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516260162601626 [2023-08-25 17:18:09,648 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 508 transitions. [2023-08-25 17:18:09,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 508 transitions. [2023-08-25 17:18:09,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:09,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 508 transitions. [2023-08-25 17:18:09,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.66666666666667) internal successors, (508), 6 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:09,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:09,652 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:09,652 INFO L175 Difference]: Start difference. First operand has 85 places, 100 transitions, 575 flow. Second operand 6 states and 508 transitions. [2023-08-25 17:18:09,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 207 transitions, 1467 flow [2023-08-25 17:18:09,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 207 transitions, 1467 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 17:18:09,661 INFO L231 Difference]: Finished difference. Result has 95 places, 151 transitions, 1109 flow [2023-08-25 17:18:09,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1109, PETRI_PLACES=95, PETRI_TRANSITIONS=151} [2023-08-25 17:18:09,662 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 54 predicate places. [2023-08-25 17:18:09,662 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 151 transitions, 1109 flow [2023-08-25 17:18:09,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:09,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:09,662 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:09,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 17:18:09,662 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:18:09,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:09,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1117479944, now seen corresponding path program 1 times [2023-08-25 17:18:09,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:09,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992670909] [2023-08-25 17:18:09,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:09,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:09,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992670909] [2023-08-25 17:18:09,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992670909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:09,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:18:09,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:18:09,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91015967] [2023-08-25 17:18:09,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:09,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:09,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:09,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:09,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:18:09,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 164 [2023-08-25 17:18:09,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 151 transitions, 1109 flow. Second operand has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:09,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:09,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 164 [2023-08-25 17:18:09,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:10,449 INFO L124 PetriNetUnfolderBase]: 1242/2494 cut-off events. [2023-08-25 17:18:10,449 INFO L125 PetriNetUnfolderBase]: For 6000/6000 co-relation queries the response was YES. [2023-08-25 17:18:10,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9876 conditions, 2494 events. 1242/2494 cut-off events. For 6000/6000 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 13186 event pairs, 365 based on Foata normal form. 0/2386 useless extension candidates. Maximal degree in co-relation 9809. Up to 2077 conditions per place. [2023-08-25 17:18:10,473 INFO L140 encePairwiseOnDemand]: 149/164 looper letters, 179 selfloop transitions, 72 changer transitions 0/251 dead transitions. [2023-08-25 17:18:10,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 251 transitions, 2262 flow [2023-08-25 17:18:10,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:10,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:10,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 508 transitions. [2023-08-25 17:18:10,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516260162601626 [2023-08-25 17:18:10,475 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 508 transitions. [2023-08-25 17:18:10,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 508 transitions. [2023-08-25 17:18:10,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:10,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 508 transitions. [2023-08-25 17:18:10,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.66666666666667) internal successors, (508), 6 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:10,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:10,479 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:10,479 INFO L175 Difference]: Start difference. First operand has 95 places, 151 transitions, 1109 flow. Second operand 6 states and 508 transitions. [2023-08-25 17:18:10,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 251 transitions, 2262 flow [2023-08-25 17:18:10,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 251 transitions, 2162 flow, removed 50 selfloop flow, removed 0 redundant places. [2023-08-25 17:18:10,497 INFO L231 Difference]: Finished difference. Result has 105 places, 205 transitions, 1836 flow [2023-08-25 17:18:10,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1836, PETRI_PLACES=105, PETRI_TRANSITIONS=205} [2023-08-25 17:18:10,498 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 64 predicate places. [2023-08-25 17:18:10,499 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 205 transitions, 1836 flow [2023-08-25 17:18:10,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:10,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:10,499 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:10,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 17:18:10,499 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:18:10,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:10,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1986599482, now seen corresponding path program 1 times [2023-08-25 17:18:10,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:10,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384448420] [2023-08-25 17:18:10,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:10,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-25 17:18:11,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:11,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384448420] [2023-08-25 17:18:11,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384448420] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:11,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424237912] [2023-08-25 17:18:11,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:11,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:11,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:11,021 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 17:18:11,031 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 17:18:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:11,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 17:18:11,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:11,230 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-25 17:18:11,253 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:11,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 17:18:11,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424237912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:11,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 17:18:11,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-25 17:18:11,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325528966] [2023-08-25 17:18:11,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:11,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:11,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:11,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:11,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-25 17:18:11,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 164 [2023-08-25 17:18:11,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 205 transitions, 1836 flow. Second operand has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:11,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:11,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 164 [2023-08-25 17:18:11,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:11,921 INFO L124 PetriNetUnfolderBase]: 1659/3971 cut-off events. [2023-08-25 17:18:11,922 INFO L125 PetriNetUnfolderBase]: For 14840/15028 co-relation queries the response was YES. [2023-08-25 17:18:11,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16682 conditions, 3971 events. 1659/3971 cut-off events. For 14840/15028 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 26829 event pairs, 218 based on Foata normal form. 12/3898 useless extension candidates. Maximal degree in co-relation 16610. Up to 903 conditions per place. [2023-08-25 17:18:11,960 INFO L140 encePairwiseOnDemand]: 156/164 looper letters, 111 selfloop transitions, 12 changer transitions 0/276 dead transitions. [2023-08-25 17:18:11,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 276 transitions, 2815 flow [2023-08-25 17:18:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:11,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 506 transitions. [2023-08-25 17:18:11,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142276422764228 [2023-08-25 17:18:11,962 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 506 transitions. [2023-08-25 17:18:11,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 506 transitions. [2023-08-25 17:18:11,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:11,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 506 transitions. [2023-08-25 17:18:11,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.33333333333333) internal successors, (506), 6 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:11,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:11,965 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:11,965 INFO L175 Difference]: Start difference. First operand has 105 places, 205 transitions, 1836 flow. Second operand 6 states and 506 transitions. [2023-08-25 17:18:11,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 276 transitions, 2815 flow [2023-08-25 17:18:12,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 276 transitions, 2485 flow, removed 165 selfloop flow, removed 0 redundant places. [2023-08-25 17:18:12,035 INFO L231 Difference]: Finished difference. Result has 113 places, 215 transitions, 1753 flow [2023-08-25 17:18:12,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1753, PETRI_PLACES=113, PETRI_TRANSITIONS=215} [2023-08-25 17:18:12,035 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 72 predicate places. [2023-08-25 17:18:12,036 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 215 transitions, 1753 flow [2023-08-25 17:18:12,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:12,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:12,036 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:12,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-25 17:18:12,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:12,242 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:18:12,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:12,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1546935944, now seen corresponding path program 2 times [2023-08-25 17:18:12,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:12,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638543277] [2023-08-25 17:18:12,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:12,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:12,807 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-25 17:18:12,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:12,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638543277] [2023-08-25 17:18:12,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638543277] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:12,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587567444] [2023-08-25 17:18:12,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:18:12,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:12,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:12,811 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 17:18:12,813 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 17:18:12,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 17:18:12,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:18:12,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 17:18:12,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:12,946 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-25 17:18:12,980 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:12,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 17:18:12,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587567444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:12,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 17:18:12,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-25 17:18:12,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063208776] [2023-08-25 17:18:12,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:12,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:12,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:12,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:12,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-25 17:18:12,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 164 [2023-08-25 17:18:12,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 215 transitions, 1753 flow. Second operand has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:12,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:12,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 164 [2023-08-25 17:18:12,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:13,809 INFO L124 PetriNetUnfolderBase]: 1968/4673 cut-off events. [2023-08-25 17:18:13,809 INFO L125 PetriNetUnfolderBase]: For 15918/16086 co-relation queries the response was YES. [2023-08-25 17:18:13,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19846 conditions, 4673 events. 1968/4673 cut-off events. For 15918/16086 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 32950 event pairs, 220 based on Foata normal form. 6/4634 useless extension candidates. Maximal degree in co-relation 19769. Up to 1128 conditions per place. [2023-08-25 17:18:13,861 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 107 selfloop transitions, 19 changer transitions 0/279 dead transitions. [2023-08-25 17:18:13,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 279 transitions, 2558 flow [2023-08-25 17:18:13,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:13,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 503 transitions. [2023-08-25 17:18:13,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111788617886179 [2023-08-25 17:18:13,863 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 503 transitions. [2023-08-25 17:18:13,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 503 transitions. [2023-08-25 17:18:13,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:13,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 503 transitions. [2023-08-25 17:18:13,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:13,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:13,867 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:13,867 INFO L175 Difference]: Start difference. First operand has 113 places, 215 transitions, 1753 flow. Second operand 6 states and 503 transitions. [2023-08-25 17:18:13,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 279 transitions, 2558 flow [2023-08-25 17:18:13,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 279 transitions, 2557 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 17:18:13,920 INFO L231 Difference]: Finished difference. Result has 119 places, 224 transitions, 1894 flow [2023-08-25 17:18:13,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=1752, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1894, PETRI_PLACES=119, PETRI_TRANSITIONS=224} [2023-08-25 17:18:13,920 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2023-08-25 17:18:13,921 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 224 transitions, 1894 flow [2023-08-25 17:18:13,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:13,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:13,921 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:13,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 17:18:14,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:14,127 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:18:14,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:14,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1241870667, now seen corresponding path program 1 times [2023-08-25 17:18:14,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:14,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487255647] [2023-08-25 17:18:14,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:14,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-25 17:18:14,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:14,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487255647] [2023-08-25 17:18:14,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487255647] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:14,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154152034] [2023-08-25 17:18:14,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:14,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:14,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:14,529 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 17:18:14,556 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 17:18:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:14,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 17:18:14,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:14,702 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-25 17:18:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:14,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 17:18:14,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154152034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:14,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 17:18:14,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-25 17:18:14,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952828848] [2023-08-25 17:18:14,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:14,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:14,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:14,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:14,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-08-25 17:18:14,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 164 [2023-08-25 17:18:14,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 224 transitions, 1894 flow. Second operand has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:14,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:14,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 164 [2023-08-25 17:18:14,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:15,386 INFO L124 PetriNetUnfolderBase]: 1665/4015 cut-off events. [2023-08-25 17:18:15,386 INFO L125 PetriNetUnfolderBase]: For 15046/15197 co-relation queries the response was YES. [2023-08-25 17:18:15,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17546 conditions, 4015 events. 1665/4015 cut-off events. For 15046/15197 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 27643 event pairs, 196 based on Foata normal form. 11/3986 useless extension candidates. Maximal degree in co-relation 17466. Up to 962 conditions per place. [2023-08-25 17:18:15,420 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 109 selfloop transitions, 22 changer transitions 0/284 dead transitions. [2023-08-25 17:18:15,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 284 transitions, 2687 flow [2023-08-25 17:18:15,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 17:18:15,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 17:18:15,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 586 transitions. [2023-08-25 17:18:15,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104529616724739 [2023-08-25 17:18:15,423 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 586 transitions. [2023-08-25 17:18:15,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 586 transitions. [2023-08-25 17:18:15,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:15,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 586 transitions. [2023-08-25 17:18:15,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:15,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:15,427 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 164.0) internal successors, (1312), 8 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:15,427 INFO L175 Difference]: Start difference. First operand has 119 places, 224 transitions, 1894 flow. Second operand 7 states and 586 transitions. [2023-08-25 17:18:15,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 284 transitions, 2687 flow [2023-08-25 17:18:15,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 284 transitions, 2673 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-25 17:18:15,472 INFO L231 Difference]: Finished difference. Result has 126 places, 227 transitions, 1984 flow [2023-08-25 17:18:15,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=1859, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1984, PETRI_PLACES=126, PETRI_TRANSITIONS=227} [2023-08-25 17:18:15,473 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 85 predicate places. [2023-08-25 17:18:15,473 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 227 transitions, 1984 flow [2023-08-25 17:18:15,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:15,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:15,473 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:15,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-25 17:18:15,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:15,677 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:18:15,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:15,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1503292769, now seen corresponding path program 2 times [2023-08-25 17:18:15,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:15,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863208699] [2023-08-25 17:18:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:15,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:16,057 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-25 17:18:16,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:16,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863208699] [2023-08-25 17:18:16,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863208699] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:16,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810287435] [2023-08-25 17:18:16,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:18:16,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:16,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:16,059 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 17:18:16,062 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 17:18:16,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 17:18:16,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:18:16,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-25 17:18:16,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:16,207 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-25 17:18:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:16,245 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 17:18:16,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810287435] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:16,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 17:18:16,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-25 17:18:16,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902233294] [2023-08-25 17:18:16,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:16,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:16,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:16,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:16,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-25 17:18:16,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 164 [2023-08-25 17:18:16,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 227 transitions, 1984 flow. Second operand has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:16,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:16,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 164 [2023-08-25 17:18:16,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:16,834 INFO L124 PetriNetUnfolderBase]: 1610/3917 cut-off events. [2023-08-25 17:18:16,834 INFO L125 PetriNetUnfolderBase]: For 15333/15534 co-relation queries the response was YES. [2023-08-25 17:18:16,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17131 conditions, 3917 events. 1610/3917 cut-off events. For 15333/15534 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 27728 event pairs, 207 based on Foata normal form. 7/3868 useless extension candidates. Maximal degree in co-relation 17048. Up to 1115 conditions per place. [2023-08-25 17:18:16,878 INFO L140 encePairwiseOnDemand]: 157/164 looper letters, 109 selfloop transitions, 17 changer transitions 1/280 dead transitions. [2023-08-25 17:18:16,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 280 transitions, 2670 flow [2023-08-25 17:18:16,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:16,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:16,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 503 transitions. [2023-08-25 17:18:16,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111788617886179 [2023-08-25 17:18:16,880 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 503 transitions. [2023-08-25 17:18:16,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 503 transitions. [2023-08-25 17:18:16,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:16,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 503 transitions. [2023-08-25 17:18:16,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:16,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:16,883 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:16,883 INFO L175 Difference]: Start difference. First operand has 126 places, 227 transitions, 1984 flow. Second operand 6 states and 503 transitions. [2023-08-25 17:18:16,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 280 transitions, 2670 flow [2023-08-25 17:18:16,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 280 transitions, 2630 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-25 17:18:16,927 INFO L231 Difference]: Finished difference. Result has 130 places, 230 transitions, 2028 flow [2023-08-25 17:18:16,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=1905, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2028, PETRI_PLACES=130, PETRI_TRANSITIONS=230} [2023-08-25 17:18:16,927 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2023-08-25 17:18:16,928 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 230 transitions, 2028 flow [2023-08-25 17:18:16,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:16,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:16,928 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:16,937 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 17:18:17,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:17,134 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:18:17,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:17,134 INFO L85 PathProgramCache]: Analyzing trace with hash 405057055, now seen corresponding path program 1 times [2023-08-25 17:18:17,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:17,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102355419] [2023-08-25 17:18:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:17,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-08-25 17:18:17,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:17,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102355419] [2023-08-25 17:18:17,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102355419] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 17:18:17,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 17:18:17,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 17:18:17,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197512415] [2023-08-25 17:18:17,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:18:17,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 17:18:17,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:17,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 17:18:17,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 17:18:17,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 164 [2023-08-25 17:18:17,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 230 transitions, 2028 flow. Second operand has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:17,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:17,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 164 [2023-08-25 17:18:17,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:18,496 INFO L124 PetriNetUnfolderBase]: 2850/5788 cut-off events. [2023-08-25 17:18:18,497 INFO L125 PetriNetUnfolderBase]: For 23165/23165 co-relation queries the response was YES. [2023-08-25 17:18:18,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27964 conditions, 5788 events. 2850/5788 cut-off events. For 23165/23165 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 37854 event pairs, 571 based on Foata normal form. 63/5851 useless extension candidates. Maximal degree in co-relation 27879. Up to 4620 conditions per place. [2023-08-25 17:18:18,549 INFO L140 encePairwiseOnDemand]: 153/164 looper letters, 291 selfloop transitions, 84 changer transitions 4/379 dead transitions. [2023-08-25 17:18:18,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 379 transitions, 4240 flow [2023-08-25 17:18:18,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 17:18:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 17:18:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 521 transitions. [2023-08-25 17:18:18,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294715447154471 [2023-08-25 17:18:18,552 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 521 transitions. [2023-08-25 17:18:18,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 521 transitions. [2023-08-25 17:18:18,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:18,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 521 transitions. [2023-08-25 17:18:18,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:18,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:18,555 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:18,555 INFO L175 Difference]: Start difference. First operand has 130 places, 230 transitions, 2028 flow. Second operand 6 states and 521 transitions. [2023-08-25 17:18:18,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 379 transitions, 4240 flow [2023-08-25 17:18:18,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 379 transitions, 4170 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-25 17:18:18,615 INFO L231 Difference]: Finished difference. Result has 138 places, 269 transitions, 2896 flow [2023-08-25 17:18:18,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=2006, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2896, PETRI_PLACES=138, PETRI_TRANSITIONS=269} [2023-08-25 17:18:18,617 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 97 predicate places. [2023-08-25 17:18:18,617 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 269 transitions, 2896 flow [2023-08-25 17:18:18,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:18,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:18,617 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:18,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 17:18:18,618 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:18:18,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:18,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1007501029, now seen corresponding path program 1 times [2023-08-25 17:18:18,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:18,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497713346] [2023-08-25 17:18:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:18,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:19,760 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:19,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:19,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497713346] [2023-08-25 17:18:19,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497713346] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:19,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038790603] [2023-08-25 17:18:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:19,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:19,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:19,762 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 17:18:19,765 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 17:18:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:19,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-25 17:18:19,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:20,115 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 17:18:20,160 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 19 treesize of output 18 [2023-08-25 17:18:20,209 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:18:20,267 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:18:20,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,403 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:18:20,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,430 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:18:20,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,459 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:18:20,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,490 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:18:20,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:20,546 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:18:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:20,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:18:33,828 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:33,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038790603] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:18:33,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:18:33,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 31 [2023-08-25 17:18:33,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127888723] [2023-08-25 17:18:33,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:18:33,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 17:18:33,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:33,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 17:18:33,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=803, Unknown=3, NotChecked=0, Total=992 [2023-08-25 17:18:33,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 164 [2023-08-25 17:18:33,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 269 transitions, 2896 flow. Second operand has 32 states, 32 states have (on average 46.21875) internal successors, (1479), 32 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:33,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:33,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 164 [2023-08-25 17:18:33,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:40,904 INFO L124 PetriNetUnfolderBase]: 4085/8258 cut-off events. [2023-08-25 17:18:40,904 INFO L125 PetriNetUnfolderBase]: For 42689/42689 co-relation queries the response was YES. [2023-08-25 17:18:40,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43143 conditions, 8258 events. 4085/8258 cut-off events. For 42689/42689 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 58238 event pairs, 633 based on Foata normal form. 20/8278 useless extension candidates. Maximal degree in co-relation 43055. Up to 3386 conditions per place. [2023-08-25 17:18:40,987 INFO L140 encePairwiseOnDemand]: 146/164 looper letters, 683 selfloop transitions, 124 changer transitions 9/816 dead transitions. [2023-08-25 17:18:40,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 816 transitions, 9509 flow [2023-08-25 17:18:40,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 17:18:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 17:18:40,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 972 transitions. [2023-08-25 17:18:40,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3704268292682927 [2023-08-25 17:18:40,991 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 972 transitions. [2023-08-25 17:18:40,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 972 transitions. [2023-08-25 17:18:40,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:40,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 972 transitions. [2023-08-25 17:18:40,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 60.75) internal successors, (972), 16 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:40,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 164.0) internal successors, (2788), 17 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:40,997 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 164.0) internal successors, (2788), 17 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:40,998 INFO L175 Difference]: Start difference. First operand has 138 places, 269 transitions, 2896 flow. Second operand 16 states and 972 transitions. [2023-08-25 17:18:40,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 816 transitions, 9509 flow [2023-08-25 17:18:41,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 816 transitions, 9161 flow, removed 174 selfloop flow, removed 0 redundant places. [2023-08-25 17:18:41,155 INFO L231 Difference]: Finished difference. Result has 164 places, 373 transitions, 4529 flow [2023-08-25 17:18:41,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=2756, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4529, PETRI_PLACES=164, PETRI_TRANSITIONS=373} [2023-08-25 17:18:41,157 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2023-08-25 17:18:41,157 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 373 transitions, 4529 flow [2023-08-25 17:18:41,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 46.21875) internal successors, (1479), 32 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:41,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:41,157 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 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] [2023-08-25 17:18:41,172 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 17:18:41,365 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,SelfDestructingSolverStorable12 [2023-08-25 17:18:41,366 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:18:41,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:41,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1996055755, now seen corresponding path program 1 times [2023-08-25 17:18:41,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:41,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276838790] [2023-08-25 17:18:41,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:41,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:42,381 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:42,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:42,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276838790] [2023-08-25 17:18:42,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276838790] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:42,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153881439] [2023-08-25 17:18:42,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:42,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:42,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:42,383 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 17:18:42,385 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 17:18:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:42,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-25 17:18:42,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:42,743 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 17:18:42,778 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 21 treesize of output 20 [2023-08-25 17:18:42,821 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-08-25 17:18:42,871 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-08-25 17:18:43,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,075 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2023-08-25 17:18:43,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,103 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2023-08-25 17:18:43,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,127 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2023-08-25 17:18:43,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,154 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2023-08-25 17:18:43,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:43,210 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2023-08-25 17:18:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:43,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:18:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:44,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153881439] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:18:44,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:18:44,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 31 [2023-08-25 17:18:44,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595080000] [2023-08-25 17:18:44,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:18:44,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 17:18:44,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:18:44,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 17:18:44,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2023-08-25 17:18:44,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 164 [2023-08-25 17:18:44,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 373 transitions, 4529 flow. Second operand has 32 states, 32 states have (on average 46.21875) internal successors, (1479), 32 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:44,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:18:44,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 164 [2023-08-25 17:18:44,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:18:49,237 INFO L124 PetriNetUnfolderBase]: 4261/8610 cut-off events. [2023-08-25 17:18:49,237 INFO L125 PetriNetUnfolderBase]: For 54664/54664 co-relation queries the response was YES. [2023-08-25 17:18:49,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47495 conditions, 8610 events. 4261/8610 cut-off events. For 54664/54664 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 61270 event pairs, 631 based on Foata normal form. 15/8625 useless extension candidates. Maximal degree in co-relation 47394. Up to 3916 conditions per place. [2023-08-25 17:18:49,319 INFO L140 encePairwiseOnDemand]: 146/164 looper letters, 639 selfloop transitions, 176 changer transitions 8/823 dead transitions. [2023-08-25 17:18:49,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 823 transitions, 10746 flow [2023-08-25 17:18:49,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 17:18:49,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 17:18:49,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 837 transitions. [2023-08-25 17:18:49,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645470383275261 [2023-08-25 17:18:49,323 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 837 transitions. [2023-08-25 17:18:49,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 837 transitions. [2023-08-25 17:18:49,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:18:49,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 837 transitions. [2023-08-25 17:18:49,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 59.785714285714285) internal successors, (837), 14 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:49,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 164.0) internal successors, (2460), 15 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:49,330 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 164.0) internal successors, (2460), 15 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:49,330 INFO L175 Difference]: Start difference. First operand has 164 places, 373 transitions, 4529 flow. Second operand 14 states and 837 transitions. [2023-08-25 17:18:49,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 823 transitions, 10746 flow [2023-08-25 17:18:49,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 823 transitions, 10683 flow, removed 31 selfloop flow, removed 1 redundant places. [2023-08-25 17:18:49,523 INFO L231 Difference]: Finished difference. Result has 187 places, 462 transitions, 6622 flow [2023-08-25 17:18:49,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=4480, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6622, PETRI_PLACES=187, PETRI_TRANSITIONS=462} [2023-08-25 17:18:49,523 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2023-08-25 17:18:49,524 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 462 transitions, 6622 flow [2023-08-25 17:18:49,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 46.21875) internal successors, (1479), 32 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:18:49,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:18:49,525 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:18:49,532 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 17:18:49,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-25 17:18:49,725 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:18:49,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:18:49,726 INFO L85 PathProgramCache]: Analyzing trace with hash -369677325, now seen corresponding path program 2 times [2023-08-25 17:18:49,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:18:49,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105794056] [2023-08-25 17:18:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:18:49,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:18:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:18:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:50,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:18:50,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105794056] [2023-08-25 17:18:50,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105794056] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:18:50,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881172060] [2023-08-25 17:18:50,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:18:50,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:18:50,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:18:50,773 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 17:18:50,806 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 17:18:50,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 17:18:50,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:18:50,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-25 17:18:50,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:18:51,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 17:18:51,239 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 19 treesize of output 18 [2023-08-25 17:18:51,280 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:18:51,329 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:18:51,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,438 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:18:51,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,460 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:18:51,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,491 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:18:51,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,514 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:18:51,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:18:51,564 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:18:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:18:51,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:19:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:19:13,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881172060] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:19:13,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:19:13,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 32 [2023-08-25 17:19:13,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228984023] [2023-08-25 17:19:13,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:19:13,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-25 17:19:13,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:19:13,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-25 17:19:13,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=872, Unknown=7, NotChecked=0, Total=1056 [2023-08-25 17:19:13,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 164 [2023-08-25 17:19:13,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 462 transitions, 6622 flow. Second operand has 33 states, 33 states have (on average 46.121212121212125) internal successors, (1522), 33 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:19:13,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:19:13,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 164 [2023-08-25 17:19:13,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:19:21,101 INFO L124 PetriNetUnfolderBase]: 7422/14996 cut-off events. [2023-08-25 17:19:21,101 INFO L125 PetriNetUnfolderBase]: For 122849/122849 co-relation queries the response was YES. [2023-08-25 17:19:21,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87454 conditions, 14996 events. 7422/14996 cut-off events. For 122849/122849 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 111616 event pairs, 1139 based on Foata normal form. 35/15031 useless extension candidates. Maximal degree in co-relation 87341. Up to 3920 conditions per place. [2023-08-25 17:19:21,250 INFO L140 encePairwiseOnDemand]: 145/164 looper letters, 1413 selfloop transitions, 322 changer transitions 65/1800 dead transitions. [2023-08-25 17:19:21,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 1800 transitions, 24371 flow [2023-08-25 17:19:21,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 17:19:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 17:19:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1825 transitions. [2023-08-25 17:19:21,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3837258200168209 [2023-08-25 17:19:21,254 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1825 transitions. [2023-08-25 17:19:21,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1825 transitions. [2023-08-25 17:19:21,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:19:21,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1825 transitions. [2023-08-25 17:19:21,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 62.93103448275862) internal successors, (1825), 29 states have internal predecessors, (1825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:19:21,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 164.0) internal successors, (4920), 30 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:19:21,264 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 164.0) internal successors, (4920), 30 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:19:21,264 INFO L175 Difference]: Start difference. First operand has 187 places, 462 transitions, 6622 flow. Second operand 29 states and 1825 transitions. [2023-08-25 17:19:21,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 1800 transitions, 24371 flow [2023-08-25 17:19:21,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 1800 transitions, 24041 flow, removed 162 selfloop flow, removed 2 redundant places. [2023-08-25 17:19:21,665 INFO L231 Difference]: Finished difference. Result has 233 places, 665 transitions, 11342 flow [2023-08-25 17:19:21,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=6478, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11342, PETRI_PLACES=233, PETRI_TRANSITIONS=665} [2023-08-25 17:19:21,666 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2023-08-25 17:19:21,666 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 665 transitions, 11342 flow [2023-08-25 17:19:21,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 46.121212121212125) internal successors, (1522), 33 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:19:21,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:19:21,667 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 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] [2023-08-25 17:19:21,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 17:19:21,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-25 17:19:21,868 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:19:21,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:19:21,868 INFO L85 PathProgramCache]: Analyzing trace with hash -621812669, now seen corresponding path program 1 times [2023-08-25 17:19:21,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:19:21,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543140897] [2023-08-25 17:19:21,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:19:21,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:19:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:19:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:19:22,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:19:22,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543140897] [2023-08-25 17:19:22,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543140897] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:19:22,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20391334] [2023-08-25 17:19:22,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:19:22,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:19:22,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:19:22,489 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:19:22,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 17:19:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:19:22,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-25 17:19:22,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:19:22,900 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 17:19:22,932 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 19 treesize of output 18 [2023-08-25 17:19:22,974 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:19:23,027 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:19:23,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:23,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:23,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:23,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:23,157 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:19:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:19:23,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:19:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:19:36,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20391334] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:19:36,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:19:36,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-25 17:19:36,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647845048] [2023-08-25 17:19:36,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:19:36,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-25 17:19:36,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:19:36,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-25 17:19:36,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=741, Unknown=5, NotChecked=0, Total=930 [2023-08-25 17:19:36,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 164 [2023-08-25 17:19:36,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 665 transitions, 11342 flow. Second operand has 31 states, 31 states have (on average 44.32258064516129) internal successors, (1374), 31 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:19:36,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:19:36,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 164 [2023-08-25 17:19:36,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:19:43,277 INFO L124 PetriNetUnfolderBase]: 8576/17285 cut-off events. [2023-08-25 17:19:43,278 INFO L125 PetriNetUnfolderBase]: For 179304/179304 co-relation queries the response was YES. [2023-08-25 17:19:43,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108728 conditions, 17285 events. 8576/17285 cut-off events. For 179304/179304 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 133424 event pairs, 2217 based on Foata normal form. 26/17311 useless extension candidates. Maximal degree in co-relation 108595. Up to 7744 conditions per place. [2023-08-25 17:19:43,479 INFO L140 encePairwiseOnDemand]: 143/164 looper letters, 1030 selfloop transitions, 221 changer transitions 9/1260 dead transitions. [2023-08-25 17:19:43,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 1260 transitions, 20958 flow [2023-08-25 17:19:43,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 17:19:43,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 17:19:43,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 940 transitions. [2023-08-25 17:19:43,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35823170731707316 [2023-08-25 17:19:43,482 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 940 transitions. [2023-08-25 17:19:43,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 940 transitions. [2023-08-25 17:19:43,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:19:43,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 940 transitions. [2023-08-25 17:19:43,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.75) internal successors, (940), 16 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:19:43,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 164.0) internal successors, (2788), 17 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:19:43,487 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 164.0) internal successors, (2788), 17 states have internal predecessors, (2788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:19:43,487 INFO L175 Difference]: Start difference. First operand has 233 places, 665 transitions, 11342 flow. Second operand 16 states and 940 transitions. [2023-08-25 17:19:43,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 1260 transitions, 20958 flow [2023-08-25 17:19:44,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 1260 transitions, 20375 flow, removed 206 selfloop flow, removed 3 redundant places. [2023-08-25 17:19:44,263 INFO L231 Difference]: Finished difference. Result has 255 places, 830 transitions, 14282 flow [2023-08-25 17:19:44,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=10900, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=14282, PETRI_PLACES=255, PETRI_TRANSITIONS=830} [2023-08-25 17:19:44,264 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2023-08-25 17:19:44,264 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 830 transitions, 14282 flow [2023-08-25 17:19:44,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 44.32258064516129) internal successors, (1374), 31 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:19:44,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:19:44,265 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:19:44,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-25 17:19:44,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 17:19:44,470 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:19:44,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:19:44,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1203491622, now seen corresponding path program 1 times [2023-08-25 17:19:44,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:19:44,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360831314] [2023-08-25 17:19:44,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:19:44,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:19:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:19:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:19:45,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:19:45,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360831314] [2023-08-25 17:19:45,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360831314] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:19:45,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358574422] [2023-08-25 17:19:45,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:19:45,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:19:45,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:19:45,480 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:19:45,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-25 17:19:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:19:45,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-25 17:19:45,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:19:45,832 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 17:19:45,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:45,868 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 21 treesize of output 20 [2023-08-25 17:19:45,878 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 19 treesize of output 18 [2023-08-25 17:19:45,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:45,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:45,914 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-08-25 17:19:45,923 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:19:45,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:45,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:45,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:45,971 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2023-08-25 17:19:45,990 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:19:46,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:46,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:46,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:46,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:46,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:46,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:46,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:46,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:19:46,095 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 60 [2023-08-25 17:19:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:19:50,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:20:01,523 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:20:01,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358574422] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:20:01,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:20:01,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 15] total 36 [2023-08-25 17:20:01,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67294643] [2023-08-25 17:20:01,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:20:01,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-25 17:20:01,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:20:01,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-25 17:20:01,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1113, Unknown=2, NotChecked=0, Total=1332 [2023-08-25 17:20:01,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 164 [2023-08-25 17:20:01,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 830 transitions, 14282 flow. Second operand has 37 states, 37 states have (on average 45.78378378378378) internal successors, (1694), 37 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:20:01,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:20:01,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 164 [2023-08-25 17:20:01,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:20:22,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:20:24,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:20:31,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:20:44,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:20:51,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:20:59,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:21:01,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:21:10,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:21:16,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:21:18,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:21:25,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:21:28,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:21:29,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:21:32,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:21:35,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:21:39,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:21:48,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:21:50,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:21:53,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:21:57,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-25 17:22:01,659 INFO L124 PetriNetUnfolderBase]: 13900/27933 cut-off events. [2023-08-25 17:22:01,659 INFO L125 PetriNetUnfolderBase]: For 300328/300328 co-relation queries the response was YES. [2023-08-25 17:22:01,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181564 conditions, 27933 events. 13900/27933 cut-off events. For 300328/300328 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 234240 event pairs, 2485 based on Foata normal form. 70/28003 useless extension candidates. Maximal degree in co-relation 181420. Up to 7700 conditions per place. [2023-08-25 17:22:01,999 INFO L140 encePairwiseOnDemand]: 144/164 looper letters, 2336 selfloop transitions, 512 changer transitions 22/2870 dead transitions. [2023-08-25 17:22:01,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 2870 transitions, 46673 flow [2023-08-25 17:22:01,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-25 17:22:01,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-25 17:22:02,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2172 transitions. [2023-08-25 17:22:02,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3678861788617886 [2023-08-25 17:22:02,002 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2172 transitions. [2023-08-25 17:22:02,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2172 transitions. [2023-08-25 17:22:02,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:22:02,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2172 transitions. [2023-08-25 17:22:02,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 60.333333333333336) internal successors, (2172), 36 states have internal predecessors, (2172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:22:02,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 164.0) internal successors, (6068), 37 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:22:02,012 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 164.0) internal successors, (6068), 37 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:22:02,012 INFO L175 Difference]: Start difference. First operand has 255 places, 830 transitions, 14282 flow. Second operand 36 states and 2172 transitions. [2023-08-25 17:22:02,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 2870 transitions, 46673 flow [2023-08-25 17:22:03,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 2870 transitions, 46504 flow, removed 84 selfloop flow, removed 1 redundant places. [2023-08-25 17:22:03,838 INFO L231 Difference]: Finished difference. Result has 317 places, 1236 transitions, 23193 flow [2023-08-25 17:22:03,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=14211, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=23193, PETRI_PLACES=317, PETRI_TRANSITIONS=1236} [2023-08-25 17:22:03,839 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 276 predicate places. [2023-08-25 17:22:03,839 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 1236 transitions, 23193 flow [2023-08-25 17:22:03,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 45.78378378378378) internal successors, (1694), 37 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:22:03,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:22:03,840 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:22:03,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-25 17:22:04,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-25 17:22:04,045 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:22:04,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:22:04,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1305325522, now seen corresponding path program 2 times [2023-08-25 17:22:04,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:22:04,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495262189] [2023-08-25 17:22:04,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:22:04,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:22:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:22:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:22:04,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:22:04,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495262189] [2023-08-25 17:22:04,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495262189] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:22:04,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221040405] [2023-08-25 17:22:04,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:22:04,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:22:04,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:22:04,961 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:22:04,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-25 17:22:05,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 17:22:05,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:22:05,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 56 conjunts are in the unsatisfiable core [2023-08-25 17:22:05,154 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:22:05,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 17:22:05,376 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 19 treesize of output 18 [2023-08-25 17:22:05,410 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:22:05,456 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:22:05,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,550 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:22:05,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,570 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:22:05,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,592 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:22:05,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,610 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:22:05,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:05,651 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:22:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:22:05,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:22:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:22:24,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221040405] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:22:24,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:22:24,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 32 [2023-08-25 17:22:24,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995578632] [2023-08-25 17:22:24,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:22:24,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-25 17:22:24,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:22:24,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-25 17:22:24,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=870, Unknown=3, NotChecked=0, Total=1056 [2023-08-25 17:22:24,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 164 [2023-08-25 17:22:24,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 1236 transitions, 23193 flow. Second operand has 33 states, 33 states have (on average 46.121212121212125) internal successors, (1522), 33 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:22:24,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:22:24,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 164 [2023-08-25 17:22:24,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:22:45,336 INFO L124 PetriNetUnfolderBase]: 15726/31585 cut-off events. [2023-08-25 17:22:45,336 INFO L125 PetriNetUnfolderBase]: For 510787/510787 co-relation queries the response was YES. [2023-08-25 17:22:45,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232211 conditions, 31585 events. 15726/31585 cut-off events. For 510787/510787 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 268611 event pairs, 2764 based on Foata normal form. 55/31640 useless extension candidates. Maximal degree in co-relation 232038. Up to 7700 conditions per place. [2023-08-25 17:22:45,991 INFO L140 encePairwiseOnDemand]: 146/164 looper letters, 2225 selfloop transitions, 660 changer transitions 22/2907 dead transitions. [2023-08-25 17:22:45,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 2907 transitions, 53786 flow [2023-08-25 17:22:45,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-25 17:22:45,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-25 17:22:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1866 transitions. [2023-08-25 17:22:45,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37926829268292683 [2023-08-25 17:22:45,994 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1866 transitions. [2023-08-25 17:22:45,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1866 transitions. [2023-08-25 17:22:45,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:22:45,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1866 transitions. [2023-08-25 17:22:45,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 62.2) internal successors, (1866), 30 states have internal predecessors, (1866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:22:46,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 164.0) internal successors, (5084), 31 states have internal predecessors, (5084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:22:46,002 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 164.0) internal successors, (5084), 31 states have internal predecessors, (5084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:22:46,002 INFO L175 Difference]: Start difference. First operand has 317 places, 1236 transitions, 23193 flow. Second operand 30 states and 1866 transitions. [2023-08-25 17:22:46,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 2907 transitions, 53786 flow [2023-08-25 17:22:49,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 2907 transitions, 53033 flow, removed 376 selfloop flow, removed 1 redundant places. [2023-08-25 17:22:49,393 INFO L231 Difference]: Finished difference. Result has 362 places, 1489 transitions, 30290 flow [2023-08-25 17:22:49,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=22722, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=417, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=30290, PETRI_PLACES=362, PETRI_TRANSITIONS=1489} [2023-08-25 17:22:49,394 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 321 predicate places. [2023-08-25 17:22:49,394 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 1489 transitions, 30290 flow [2023-08-25 17:22:49,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 46.121212121212125) internal successors, (1522), 33 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:22:49,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:22:49,395 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 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] [2023-08-25 17:22:49,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-25 17:22:49,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-25 17:22:49,595 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:22:49,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:22:49,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2129745407, now seen corresponding path program 1 times [2023-08-25 17:22:49,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:22:49,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412854266] [2023-08-25 17:22:49,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:22:49,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:22:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:22:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:22:50,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:22:50,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412854266] [2023-08-25 17:22:50,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412854266] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:22:50,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801966309] [2023-08-25 17:22:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:22:50,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:22:50,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:22:50,192 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:22:50,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-25 17:22:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:22:50,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-25 17:22:50,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:22:50,705 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 17:22:50,744 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 19 treesize of output 18 [2023-08-25 17:22:50,779 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:22:50,824 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:22:50,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:50,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:50,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:50,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:22:50,870 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:22:50,903 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:22:50,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:22:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:22:51,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801966309] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:22:51,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:22:51,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-25 17:22:51,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48867587] [2023-08-25 17:22:51,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:22:51,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 17:22:51,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:22:51,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 17:22:51,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2023-08-25 17:22:51,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 164 [2023-08-25 17:22:51,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 1489 transitions, 30290 flow. Second operand has 32 states, 32 states have (on average 44.21875) internal successors, (1415), 32 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:22:51,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:22:51,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 164 [2023-08-25 17:22:51,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:23:13,470 INFO L124 PetriNetUnfolderBase]: 17477/35101 cut-off events. [2023-08-25 17:23:13,471 INFO L125 PetriNetUnfolderBase]: For 631645/631645 co-relation queries the response was YES. [2023-08-25 17:23:14,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266740 conditions, 35101 events. 17477/35101 cut-off events. For 631645/631645 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 303606 event pairs, 4416 based on Foata normal form. 56/35157 useless extension candidates. Maximal degree in co-relation 266549. Up to 19917 conditions per place. [2023-08-25 17:23:14,133 INFO L140 encePairwiseOnDemand]: 142/164 looper letters, 2619 selfloop transitions, 441 changer transitions 36/3096 dead transitions. [2023-08-25 17:23:14,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 3096 transitions, 59107 flow [2023-08-25 17:23:14,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-25 17:23:14,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-25 17:23:14,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1901 transitions. [2023-08-25 17:23:14,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3622332317073171 [2023-08-25 17:23:14,136 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1901 transitions. [2023-08-25 17:23:14,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1901 transitions. [2023-08-25 17:23:14,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:23:14,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1901 transitions. [2023-08-25 17:23:14,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 59.40625) internal successors, (1901), 32 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:23:14,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 164.0) internal successors, (5412), 33 states have internal predecessors, (5412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:23:14,144 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 164.0) internal successors, (5412), 33 states have internal predecessors, (5412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:23:14,144 INFO L175 Difference]: Start difference. First operand has 362 places, 1489 transitions, 30290 flow. Second operand 32 states and 1901 transitions. [2023-08-25 17:23:14,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 3096 transitions, 59107 flow [2023-08-25 17:23:19,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 3096 transitions, 58364 flow, removed 105 selfloop flow, removed 7 redundant places. [2023-08-25 17:23:19,356 INFO L231 Difference]: Finished difference. Result has 411 places, 1830 transitions, 37504 flow [2023-08-25 17:23:19,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=29816, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=37504, PETRI_PLACES=411, PETRI_TRANSITIONS=1830} [2023-08-25 17:23:19,357 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2023-08-25 17:23:19,357 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 1830 transitions, 37504 flow [2023-08-25 17:23:19,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 44.21875) internal successors, (1415), 32 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:23:19,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:23:19,358 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 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] [2023-08-25 17:23:19,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-25 17:23:19,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:23:19,558 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:23:19,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:23:19,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1089186765, now seen corresponding path program 2 times [2023-08-25 17:23:19,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:23:19,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220329888] [2023-08-25 17:23:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:23:19,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:23:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:23:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:23:20,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:23:20,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220329888] [2023-08-25 17:23:20,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220329888] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:23:20,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696191200] [2023-08-25 17:23:20,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:23:20,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:23:20,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:23:20,024 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:23:20,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-25 17:23:20,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 17:23:20,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:23:20,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-25 17:23:20,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:23:20,438 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 17:23:20,483 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 19 treesize of output 18 [2023-08-25 17:23:20,518 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:23:20,565 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:23:20,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:23:20,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:23:20,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:23:20,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:23:20,684 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:23:20,720 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:23:20,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:23:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:23:27,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696191200] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:23:27,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:23:27,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-25 17:23:27,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849278879] [2023-08-25 17:23:27,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:23:27,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 17:23:27,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:23:27,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 17:23:27,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=808, Unknown=1, NotChecked=0, Total=992 [2023-08-25 17:23:27,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 164 [2023-08-25 17:23:27,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 1830 transitions, 37504 flow. Second operand has 32 states, 32 states have (on average 44.21875) internal successors, (1415), 32 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:23:27,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:23:27,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 164 [2023-08-25 17:23:27,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:23:50,169 INFO L124 PetriNetUnfolderBase]: 17644/35531 cut-off events. [2023-08-25 17:23:50,169 INFO L125 PetriNetUnfolderBase]: For 773109/773109 co-relation queries the response was YES. [2023-08-25 17:23:51,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292288 conditions, 35531 events. 17644/35531 cut-off events. For 773109/773109 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 308858 event pairs, 3907 based on Foata normal form. 53/35584 useless extension candidates. Maximal degree in co-relation 292072. Up to 9398 conditions per place. [2023-08-25 17:23:51,217 INFO L140 encePairwiseOnDemand]: 142/164 looper letters, 2627 selfloop transitions, 804 changer transitions 38/3469 dead transitions. [2023-08-25 17:23:51,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 3469 transitions, 70064 flow [2023-08-25 17:23:51,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-25 17:23:51,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-25 17:23:51,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2004 transitions. [2023-08-25 17:23:51,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37028824833702884 [2023-08-25 17:23:51,220 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2004 transitions. [2023-08-25 17:23:51,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2004 transitions. [2023-08-25 17:23:51,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:23:51,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2004 transitions. [2023-08-25 17:23:51,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 60.72727272727273) internal successors, (2004), 33 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:23:51,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 164.0) internal successors, (5576), 34 states have internal predecessors, (5576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:23:51,227 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 164.0) internal successors, (5576), 34 states have internal predecessors, (5576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:23:51,227 INFO L175 Difference]: Start difference. First operand has 411 places, 1830 transitions, 37504 flow. Second operand 33 states and 2004 transitions. [2023-08-25 17:23:51,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 3469 transitions, 70064 flow [2023-08-25 17:23:58,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 3469 transitions, 69213 flow, removed 425 selfloop flow, removed 1 redundant places. [2023-08-25 17:23:58,881 INFO L231 Difference]: Finished difference. Result has 463 places, 2180 transitions, 46201 flow [2023-08-25 17:23:58,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=36791, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=494, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=46201, PETRI_PLACES=463, PETRI_TRANSITIONS=2180} [2023-08-25 17:23:58,883 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 422 predicate places. [2023-08-25 17:23:58,883 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 2180 transitions, 46201 flow [2023-08-25 17:23:58,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 44.21875) internal successors, (1415), 32 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:23:58,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:23:58,883 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 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] [2023-08-25 17:23:58,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-25 17:23:59,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:23:59,089 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:23:59,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:23:59,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1395134369, now seen corresponding path program 2 times [2023-08-25 17:23:59,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:23:59,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730751463] [2023-08-25 17:23:59,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:23:59,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:23:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:23:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:23:59,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:23:59,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730751463] [2023-08-25 17:23:59,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730751463] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:23:59,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206762542] [2023-08-25 17:23:59,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:23:59,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:23:59,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:23:59,883 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:23:59,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-25 17:24:00,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 17:24:00,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:24:00,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-25 17:24:00,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:24:00,227 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 17:24:00,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,256 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 21 treesize of output 20 [2023-08-25 17:24:00,266 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 21 treesize of output 20 [2023-08-25 17:24:00,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,301 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-08-25 17:24:00,315 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2023-08-25 17:24:00,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,356 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-08-25 17:24:00,371 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2023-08-25 17:24:00,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:24:00,497 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 90 [2023-08-25 17:24:04,556 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:24:04,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:24:16,703 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:24:16,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206762542] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:24:16,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:24:16,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 15] total 36 [2023-08-25 17:24:16,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407194175] [2023-08-25 17:24:16,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:24:16,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-25 17:24:16,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:24:16,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-25 17:24:16,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1112, Unknown=1, NotChecked=0, Total=1332 [2023-08-25 17:24:16,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 164 [2023-08-25 17:24:16,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 2180 transitions, 46201 flow. Second operand has 37 states, 37 states have (on average 45.78378378378378) internal successors, (1694), 37 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:24:16,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:24:16,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 164 [2023-08-25 17:24:16,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:24:55,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:24:57,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:25:19,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:25:26,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:25:28,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:25:35,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:25:37,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:25:42,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:25:52,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:26:00,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:26:02,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:26:05,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:26:07,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:26:13,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:26:18,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:26:23,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:26:25,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:26:30,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:26:32,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:26:32,991 INFO L124 PetriNetUnfolderBase]: 18250/36693 cut-off events. [2023-08-25 17:26:32,991 INFO L125 PetriNetUnfolderBase]: For 910595/910595 co-relation queries the response was YES. [2023-08-25 17:26:33,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318527 conditions, 36693 events. 18250/36693 cut-off events. For 910595/910595 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 320577 event pairs, 2928 based on Foata normal form. 100/36793 useless extension candidates. Maximal degree in co-relation 318289. Up to 9099 conditions per place. [2023-08-25 17:26:34,091 INFO L140 encePairwiseOnDemand]: 144/164 looper letters, 3490 selfloop transitions, 1068 changer transitions 36/4594 dead transitions. [2023-08-25 17:26:34,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 4594 transitions, 95609 flow [2023-08-25 17:26:34,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-08-25 17:26:34,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2023-08-25 17:26:34,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 3807 transitions. [2023-08-25 17:26:34,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35171840354767187 [2023-08-25 17:26:34,100 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 3807 transitions. [2023-08-25 17:26:34,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 3807 transitions. [2023-08-25 17:26:34,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:26:34,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 3807 transitions. [2023-08-25 17:26:34,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 57.68181818181818) internal successors, (3807), 66 states have internal predecessors, (3807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:26:34,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 164.0) internal successors, (10988), 67 states have internal predecessors, (10988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:26:34,114 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 164.0) internal successors, (10988), 67 states have internal predecessors, (10988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:26:34,114 INFO L175 Difference]: Start difference. First operand has 463 places, 2180 transitions, 46201 flow. Second operand 66 states and 3807 transitions. [2023-08-25 17:26:34,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 4594 transitions, 95609 flow [2023-08-25 17:26:44,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 4594 transitions, 94656 flow, removed 432 selfloop flow, removed 4 redundant places. [2023-08-25 17:26:44,819 INFO L231 Difference]: Finished difference. Result has 572 places, 2701 transitions, 61784 flow [2023-08-25 17:26:44,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=45648, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=575, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=61784, PETRI_PLACES=572, PETRI_TRANSITIONS=2701} [2023-08-25 17:26:44,821 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 531 predicate places. [2023-08-25 17:26:44,821 INFO L495 AbstractCegarLoop]: Abstraction has has 572 places, 2701 transitions, 61784 flow [2023-08-25 17:26:44,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 45.78378378378378) internal successors, (1694), 37 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:26:44,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:26:44,822 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:26:44,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-25 17:26:45,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:26:45,030 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:26:45,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:26:45,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1453462730, now seen corresponding path program 3 times [2023-08-25 17:26:45,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:26:45,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371499045] [2023-08-25 17:26:45,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:26:45,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:26:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:26:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:26:45,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:26:45,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371499045] [2023-08-25 17:26:45,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371499045] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:26:45,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097955476] [2023-08-25 17:26:45,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 17:26:45,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:26:45,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:26:45,796 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:26:45,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-25 17:26:45,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 17:26:45,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:26:45,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-25 17:26:46,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:26:46,193 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 17:26:46,226 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 19 treesize of output 18 [2023-08-25 17:26:46,267 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:26:46,351 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:26:46,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,396 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:26:46,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,417 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:26:46,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,436 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:26:46,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,456 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:26:46,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:26:46,600 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 84 [2023-08-25 17:26:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:26:52,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:27:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:27:09,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097955476] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:27:09,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:27:09,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 15] total 37 [2023-08-25 17:27:09,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652719818] [2023-08-25 17:27:09,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:27:09,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-25 17:27:09,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:27:09,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-25 17:27:09,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1192, Unknown=5, NotChecked=0, Total=1406 [2023-08-25 17:27:09,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 164 [2023-08-25 17:27:09,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 2701 transitions, 61784 flow. Second operand has 38 states, 38 states have (on average 45.71052631578947) internal successors, (1737), 38 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:27:09,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:27:09,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 164 [2023-08-25 17:27:09,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:27:25,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:27:28,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:27:30,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:27:32,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:27:40,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:27:42,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:27:47,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:27:52,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:27:54,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:27:56,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-25 17:28:37,964 INFO L124 PetriNetUnfolderBase]: 19255/38703 cut-off events. [2023-08-25 17:28:37,964 INFO L125 PetriNetUnfolderBase]: For 1217546/1217546 co-relation queries the response was YES. [2023-08-25 17:28:39,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361944 conditions, 38703 events. 19255/38703 cut-off events. For 1217546/1217546 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 341716 event pairs, 3325 based on Foata normal form. 103/38806 useless extension candidates. Maximal degree in co-relation 361658. Up to 9100 conditions per place. [2023-08-25 17:28:39,452 INFO L140 encePairwiseOnDemand]: 144/164 looper letters, 3199 selfloop transitions, 1111 changer transitions 24/4334 dead transitions. [2023-08-25 17:28:39,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 4334 transitions, 100505 flow [2023-08-25 17:28:39,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-25 17:28:39,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-25 17:28:39,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2299 transitions. [2023-08-25 17:28:39,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3788727752142386 [2023-08-25 17:28:39,456 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2299 transitions. [2023-08-25 17:28:39,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2299 transitions. [2023-08-25 17:28:39,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:28:39,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2299 transitions. [2023-08-25 17:28:39,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 62.13513513513514) internal successors, (2299), 37 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:28:39,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 164.0) internal successors, (6232), 38 states have internal predecessors, (6232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:28:39,463 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 164.0) internal successors, (6232), 38 states have internal predecessors, (6232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:28:39,464 INFO L175 Difference]: Start difference. First operand has 572 places, 2701 transitions, 61784 flow. Second operand 37 states and 2299 transitions. [2023-08-25 17:28:39,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 4334 transitions, 100505 flow [2023-08-25 17:28:59,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 4334 transitions, 98397 flow, removed 854 selfloop flow, removed 9 redundant places. [2023-08-25 17:28:59,127 INFO L231 Difference]: Finished difference. Result has 611 places, 2919 transitions, 69408 flow [2023-08-25 17:28:59,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=59921, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=907, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1684, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=69408, PETRI_PLACES=611, PETRI_TRANSITIONS=2919} [2023-08-25 17:28:59,130 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 570 predicate places. [2023-08-25 17:28:59,130 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 2919 transitions, 69408 flow [2023-08-25 17:28:59,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 45.71052631578947) internal successors, (1737), 38 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:28:59,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:28:59,131 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 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] [2023-08-25 17:28:59,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-25 17:28:59,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:28:59,339 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:28:59,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:28:59,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1275188671, now seen corresponding path program 2 times [2023-08-25 17:28:59,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:28:59,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050009642] [2023-08-25 17:28:59,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:28:59,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:28:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:28:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:28:59,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:28:59,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050009642] [2023-08-25 17:28:59,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050009642] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:28:59,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510498124] [2023-08-25 17:28:59,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 17:28:59,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:28:59,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:28:59,856 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:28:59,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-25 17:29:00,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 17:29:00,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:29:00,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-25 17:29:00,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:29:00,349 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 17:29:00,385 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 19 treesize of output 18 [2023-08-25 17:29:00,427 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:29:00,480 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:29:00,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:29:00,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:29:00,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:29:00,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:29:00,534 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-25 17:29:00,571 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:29:00,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:29:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:29:01,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510498124] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 17:29:01,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 17:29:01,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-25 17:29:01,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625036194] [2023-08-25 17:29:01,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 17:29:01,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 17:29:01,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:29:01,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 17:29:01,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=822, Unknown=0, NotChecked=0, Total=992 [2023-08-25 17:29:01,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 164 [2023-08-25 17:29:01,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 2919 transitions, 69408 flow. Second operand has 32 states, 32 states have (on average 44.21875) internal successors, (1415), 32 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:29:01,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:29:01,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 164 [2023-08-25 17:29:01,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 17:29:51,764 INFO L124 PetriNetUnfolderBase]: 20199/40593 cut-off events. [2023-08-25 17:29:51,764 INFO L125 PetriNetUnfolderBase]: For 1343928/1343928 co-relation queries the response was YES. [2023-08-25 17:29:54,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388026 conditions, 40593 events. 20199/40593 cut-off events. For 1343928/1343928 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 361522 event pairs, 4652 based on Foata normal form. 56/40649 useless extension candidates. Maximal degree in co-relation 387728. Up to 23347 conditions per place. [2023-08-25 17:29:54,221 INFO L140 encePairwiseOnDemand]: 142/164 looper letters, 3976 selfloop transitions, 643 changer transitions 42/4661 dead transitions. [2023-08-25 17:29:54,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 4661 transitions, 109203 flow [2023-08-25 17:29:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-25 17:29:54,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-25 17:29:54,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2078 transitions. [2023-08-25 17:29:54,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37266857962697275 [2023-08-25 17:29:54,224 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2078 transitions. [2023-08-25 17:29:54,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2078 transitions. [2023-08-25 17:29:54,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 17:29:54,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2078 transitions. [2023-08-25 17:29:54,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 61.11764705882353) internal successors, (2078), 34 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:29:54,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 164.0) internal successors, (5740), 35 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:29:54,231 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 164.0) internal successors, (5740), 35 states have internal predecessors, (5740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:29:54,231 INFO L175 Difference]: Start difference. First operand has 611 places, 2919 transitions, 69408 flow. Second operand 34 states and 2078 transitions. [2023-08-25 17:29:54,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 4661 transitions, 109203 flow [2023-08-25 17:30:16,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 4661 transitions, 107438 flow, removed 252 selfloop flow, removed 16 redundant places. [2023-08-25 17:30:16,720 INFO L231 Difference]: Finished difference. Result has 646 places, 3179 transitions, 75727 flow [2023-08-25 17:30:16,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=68065, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=387, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=75727, PETRI_PLACES=646, PETRI_TRANSITIONS=3179} [2023-08-25 17:30:16,723 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 605 predicate places. [2023-08-25 17:30:16,723 INFO L495 AbstractCegarLoop]: Abstraction has has 646 places, 3179 transitions, 75727 flow [2023-08-25 17:30:16,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 44.21875) internal successors, (1415), 32 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:30:16,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 17:30:16,723 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 17:30:16,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-25 17:30:16,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:30:16,933 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-25 17:30:16,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 17:30:16,933 INFO L85 PathProgramCache]: Analyzing trace with hash -383673549, now seen corresponding path program 3 times [2023-08-25 17:30:16,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 17:30:16,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755491929] [2023-08-25 17:30:16,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 17:30:16,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 17:30:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 17:30:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-25 17:30:17,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 17:30:17,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755491929] [2023-08-25 17:30:17,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755491929] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 17:30:17,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501566878] [2023-08-25 17:30:17,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 17:30:17,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:30:17,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 17:30:17,441 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 17:30:17,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-25 17:30:17,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-25 17:30:17,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 17:30:17,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-25 17:30:17,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 17:30:17,732 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-25 17:30:17,873 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-25 17:30:17,873 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 17 treesize of output 11 [2023-08-25 17:30:17,919 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-25 17:30:17,962 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 19 treesize of output 18 [2023-08-25 17:30:18,012 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-25 17:30:18,071 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-25 17:30:18,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-25 17:30:18,123 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-25 17:30:18,155 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-25 17:30:18,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 17:30:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-25 17:30:18,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501566878] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 17:30:18,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 17:30:18,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 9] total 26 [2023-08-25 17:30:18,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467257849] [2023-08-25 17:30:18,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 17:30:18,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 17:30:18,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 17:30:18,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 17:30:18,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2023-08-25 17:30:18,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 164 [2023-08-25 17:30:18,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 3179 transitions, 75727 flow. Second operand has 9 states, 9 states have (on average 53.0) internal successors, (477), 9 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 17:30:18,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 17:30:18,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 164 [2023-08-25 17:30:18,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-25 17:30:27,561 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 17:30:27,561 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 17:30:27,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 17:30:27,625 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2023-08-25 17:30:27,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-25 17:30:27,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 17:30:27,833 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 49/164 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 48306 conditions, 5163 events (2240/5162 cut-off events. For 174081/174081 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 46700 event pairs, 432 based on Foata normal form. 10/5860 useless extension candidates. Maximal degree in co-relation 48035. Up to 2411 conditions per place.). [2023-08-25 17:30:27,834 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-08-25 17:30:27,835 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-25 17:30:27,835 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-08-25 17:30:27,835 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-08-25 17:30:27,835 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-08-25 17:30:27,835 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-08-25 17:30:27,835 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-08-25 17:30:27,841 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 17:30:27,841 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 17:30:27,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 05:30:27 BasicIcfg [2023-08-25 17:30:27,843 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 17:30:27,844 INFO L158 Benchmark]: Toolchain (without parser) took 745518.01ms. Allocated memory was 354.4MB in the beginning and 11.2GB in the end (delta: 10.9GB). Free memory was 329.5MB in the beginning and 8.9GB in the end (delta: -8.5GB). Peak memory consumption was 3.2GB. Max. memory is 16.0GB. [2023-08-25 17:30:27,844 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 354.4MB. Free memory is still 331.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 17:30:27,844 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.48ms. Allocated memory is still 354.4MB. Free memory was 329.0MB in the beginning and 300.6MB in the end (delta: 28.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-25 17:30:27,844 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.79ms. Allocated memory is still 354.4MB. Free memory was 300.6MB in the beginning and 298.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-25 17:30:27,845 INFO L158 Benchmark]: Boogie Preprocessor took 52.08ms. Allocated memory is still 354.4MB. Free memory was 298.0MB in the beginning and 295.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 17:30:27,845 INFO L158 Benchmark]: RCFGBuilder took 473.39ms. Allocated memory is still 354.4MB. Free memory was 295.9MB in the beginning and 330.4MB in the end (delta: -34.5MB). Peak memory consumption was 20.5MB. Max. memory is 16.0GB. [2023-08-25 17:30:27,845 INFO L158 Benchmark]: TraceAbstraction took 744359.10ms. Allocated memory was 354.4MB in the beginning and 11.2GB in the end (delta: 10.9GB). Free memory was 329.4MB in the beginning and 8.9GB in the end (delta: -8.5GB). Peak memory consumption was 3.2GB. Max. memory is 16.0GB. [2023-08-25 17:30:27,846 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 354.4MB. Free memory is still 331.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 558.48ms. Allocated memory is still 354.4MB. Free memory was 329.0MB in the beginning and 300.6MB in the end (delta: 28.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 69.79ms. Allocated memory is still 354.4MB. Free memory was 300.6MB in the beginning and 298.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 52.08ms. Allocated memory is still 354.4MB. Free memory was 298.0MB in the beginning and 295.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 473.39ms. Allocated memory is still 354.4MB. Free memory was 295.9MB in the beginning and 330.4MB in the end (delta: -34.5MB). Peak memory consumption was 20.5MB. Max. memory is 16.0GB. * TraceAbstraction took 744359.10ms. Allocated memory was 354.4MB in the beginning and 11.2GB in the end (delta: 10.9GB). Free memory was 329.4MB in the beginning and 8.9GB in the end (delta: -8.5GB). Peak memory consumption was 3.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 736]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [736] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 98 PlacesBefore, 41 PlacesAfterwards, 100 TransitionsBefore, 40 TransitionsAfterwards, 2960 CoEnabledTransitionPairs, 4 FixpointIterations, 17 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 63 TotalNumberOfCompositions, 7963 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1916, independent: 1639, independent conditional: 0, independent unconditional: 1639, dependent: 277, dependent conditional: 0, dependent unconditional: 277, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1258, independent: 1208, independent conditional: 0, independent unconditional: 1208, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1916, independent: 431, independent conditional: 0, independent unconditional: 431, dependent: 227, dependent conditional: 0, dependent unconditional: 227, unknown: 1258, unknown conditional: 0, unknown unconditional: 1258] , Statistics on independence cache: Total cache size (in pairs): 67, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 923]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 49/164 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 48306 conditions, 5163 events (2240/5162 cut-off events. For 174081/174081 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 46700 event pairs, 432 based on Foata normal form. 10/5860 useless extension candidates. Maximal degree in co-relation 48035. Up to 2411 conditions per place.). - TimeoutResultAtElement [Line: 923]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 49/164 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 48306 conditions, 5163 events (2240/5162 cut-off events. For 174081/174081 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 46700 event pairs, 432 based on Foata normal form. 10/5860 useless extension candidates. Maximal degree in co-relation 48035. Up to 2411 conditions per place.). - TimeoutResultAtElement [Line: 937]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 49/164 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 48306 conditions, 5163 events (2240/5162 cut-off events. For 174081/174081 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 46700 event pairs, 432 based on Foata normal form. 10/5860 useless extension candidates. Maximal degree in co-relation 48035. Up to 2411 conditions per place.). - TimeoutResultAtElement [Line: 923]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 49/164 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 48306 conditions, 5163 events (2240/5162 cut-off events. For 174081/174081 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 46700 event pairs, 432 based on Foata normal form. 10/5860 useless extension candidates. Maximal degree in co-relation 48035. Up to 2411 conditions per place.). - TimeoutResultAtElement [Line: 923]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 49/164 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 48306 conditions, 5163 events (2240/5162 cut-off events. For 174081/174081 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 46700 event pairs, 432 based on Foata normal form. 10/5860 useless extension candidates. Maximal degree in co-relation 48035. Up to 2411 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 133 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 744.3s, OverallIterations: 24, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 583.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 44 mSolverCounterUnknown, 7587 SdHoareTripleChecker+Valid, 252.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7587 mSDsluCounter, 3993 SdHoareTripleChecker+Invalid, 246.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3296 mSDsCounter, 1527 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33606 IncrementalHoareTripleChecker+Invalid, 35177 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1527 mSolverCounterUnsat, 697 mSDtfsCounter, 33606 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1773 GetRequests, 1001 SyntacticMatches, 23 SemanticMatches, 749 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12555 ImplicationChecksByTransitivity, 189.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75727occurred in iteration=23, InterpolantAutomatonStates: 423, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 151.5s InterpolantComputationTime, 1533 NumberOfCodeBlocks, 1477 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 2043 ConstructedInterpolants, 106 QuantifiedInterpolants, 74374 SizeOfPredicates, 205 NumberOfNonLiveVariables, 4382 ConjunctsInSsa, 747 ConjunctsInUnsatCore, 57 InterpolantComputations, 11 PerfectInterpolantSequences, 2640/2940 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown