/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/04-mutex_17-ps_add1_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 06:56:40,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 06:56:40,558 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 06:56:40,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 06:56:40,564 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 06:56:40,600 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 06:56:40,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 06:56:40,602 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 06:56:40,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 06:56:40,606 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 06:56:40,606 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 06:56:40,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 06:56:40,606 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 06:56:40,607 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 06:56:40,608 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 06:56:40,608 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 06:56:40,608 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 06:56:40,608 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 06:56:40,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 06:56:40,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 06:56:40,609 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 06:56:40,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 06:56:40,610 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 06:56:40,610 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 06:56:40,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 06:56:40,611 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 06:56:40,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 06:56:40,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:56:40,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 06:56:40,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 06:56:40,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 06:56:40,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 06:56:40,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 06:56:40,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 06:56:40,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 06:56:40,614 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 06:56:40,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 06:56:40,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 06:56:40,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 06:56:40,946 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 06:56:40,948 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 06:56:40,950 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_17-ps_add1_nr.i [2023-08-26 06:56:42,190 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 06:56:42,383 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 06:56:42,383 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_17-ps_add1_nr.i [2023-08-26 06:56:42,403 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6a5b019/dfaaf133245f40199f954bf92b460fd0/FLAG3bf763378 [2023-08-26 06:56:42,420 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6a5b019/dfaaf133245f40199f954bf92b460fd0 [2023-08-26 06:56:42,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 06:56:42,426 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 06:56:42,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 06:56:42,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 06:56:42,432 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 06:56:42,433 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:56:42" (1/1) ... [2023-08-26 06:56:42,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137def03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:56:42, skipping insertion in model container [2023-08-26 06:56:42,434 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:56:42" (1/1) ... [2023-08-26 06:56:42,486 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 06:56:42,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:56:42,892 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 06:56:42,903 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [121] [2023-08-26 06:56:42,918 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [483] [2023-08-26 06:56:42,919 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [483] [2023-08-26 06:56:42,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:56:42,990 INFO L206 MainTranslator]: Completed translation [2023-08-26 06:56:42,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:56:42 WrapperNode [2023-08-26 06:56:42,991 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 06:56:42,992 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 06:56:42,992 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 06:56:42,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 06:56:42,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:56:42" (1/1) ... [2023-08-26 06:56:43,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:56:42" (1/1) ... [2023-08-26 06:56:43,051 INFO L138 Inliner]: procedures = 266, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 59 [2023-08-26 06:56:43,052 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 06:56:43,053 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 06:56:43,053 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 06:56:43,053 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 06:56:43,059 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:56:42" (1/1) ... [2023-08-26 06:56:43,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:56:42" (1/1) ... [2023-08-26 06:56:43,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:56:42" (1/1) ... [2023-08-26 06:56:43,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:56:42" (1/1) ... [2023-08-26 06:56:43,079 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:56:42" (1/1) ... [2023-08-26 06:56:43,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:56:42" (1/1) ... [2023-08-26 06:56:43,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:56:42" (1/1) ... [2023-08-26 06:56:43,082 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:56:42" (1/1) ... [2023-08-26 06:56:43,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 06:56:43,084 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 06:56:43,085 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 06:56:43,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 06:56:43,085 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:56:42" (1/1) ... [2023-08-26 06:56:43,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:56:43,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:56:43,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 06:56:43,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 06:56:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 06:56:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 06:56:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 06:56:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 06:56:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 06:56:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 06:56:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 06:56:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 06:56:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 06:56:43,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 06:56:43,159 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 06:56:43,287 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 06:56:43,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 06:56:43,476 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 06:56:43,482 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 06:56:43,482 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 06:56:43,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:56:43 BoogieIcfgContainer [2023-08-26 06:56:43,484 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 06:56:43,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 06:56:43,492 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 06:56:43,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 06:56:43,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:56:42" (1/3) ... [2023-08-26 06:56:43,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798bd067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:56:43, skipping insertion in model container [2023-08-26 06:56:43,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:56:42" (2/3) ... [2023-08-26 06:56:43,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798bd067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:56:43, skipping insertion in model container [2023-08-26 06:56:43,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:56:43" (3/3) ... [2023-08-26 06:56:43,497 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_17-ps_add1_nr.i [2023-08-26 06:56:43,515 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 06:56:43,515 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-26 06:56:43,515 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 06:56:43,581 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 06:56:43,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 81 transitions, 167 flow [2023-08-26 06:56:43,665 INFO L124 PetriNetUnfolderBase]: 4/80 cut-off events. [2023-08-26 06:56:43,665 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:56:43,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 80 events. 4/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 122 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-26 06:56:43,671 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 81 transitions, 167 flow [2023-08-26 06:56:43,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 80 transitions, 163 flow [2023-08-26 06:56:43,680 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 06:56:43,692 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 80 transitions, 163 flow [2023-08-26 06:56:43,696 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 80 transitions, 163 flow [2023-08-26 06:56:43,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 80 transitions, 163 flow [2023-08-26 06:56:43,730 INFO L124 PetriNetUnfolderBase]: 4/80 cut-off events. [2023-08-26 06:56:43,731 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:56:43,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 80 events. 4/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 122 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-26 06:56:43,733 INFO L119 LiptonReduction]: Number of co-enabled transitions 1394 [2023-08-26 06:56:45,577 INFO L134 LiptonReduction]: Checked pairs total: 3783 [2023-08-26 06:56:45,577 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-08-26 06:56:45,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 06:56:45,595 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;@37155984, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 06:56:45,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-26 06:56:45,598 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 06:56:45,599 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-08-26 06:56:45,599 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:56:45,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:56:45,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 06:56:45,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:56:45,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:56:45,604 INFO L85 PathProgramCache]: Analyzing trace with hash 279380644, now seen corresponding path program 1 times [2023-08-26 06:56:45,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:56:45,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197058541] [2023-08-26 06:56:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:56:45,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:56:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:56:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:56:45,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:56:45,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197058541] [2023-08-26 06:56:45,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197058541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:56:45,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:56:45,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:56:45,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724790746] [2023-08-26 06:56:45,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:56:45,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:56:45,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:56:45,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:56:45,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:56:45,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 152 [2023-08-26 06:56:45,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:45,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:56:45,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 152 [2023-08-26 06:56:45,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:56:45,961 INFO L124 PetriNetUnfolderBase]: 93/218 cut-off events. [2023-08-26 06:56:45,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:56:45,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 218 events. 93/218 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 871 event pairs, 35 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 408. Up to 121 conditions per place. [2023-08-26 06:56:45,965 INFO L140 encePairwiseOnDemand]: 144/152 looper letters, 32 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2023-08-26 06:56:45,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 161 flow [2023-08-26 06:56:45,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:56:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:56:45,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-26 06:56:45,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2023-08-26 06:56:45,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-26 06:56:45,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-26 06:56:45,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:56:45,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-26 06:56:45,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:45,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:45,995 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:45,996 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 51 flow. Second operand 3 states and 244 transitions. [2023-08-26 06:56:45,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 161 flow [2023-08-26 06:56:45,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 41 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:56:46,000 INFO L231 Difference]: Finished difference. Result has 29 places, 30 transitions, 102 flow [2023-08-26 06:56:46,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=29, PETRI_TRANSITIONS=30} [2023-08-26 06:56:46,005 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-26 06:56:46,006 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 30 transitions, 102 flow [2023-08-26 06:56:46,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:56:46,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:56:46,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 06:56:46,007 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:56:46,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:56:46,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1042706279, now seen corresponding path program 1 times [2023-08-26 06:56:46,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:56:46,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770967612] [2023-08-26 06:56:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:56:46,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:56:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:56:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:56:46,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:56:46,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770967612] [2023-08-26 06:56:46,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770967612] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:56:46,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:56:46,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:56:46,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785047925] [2023-08-26 06:56:46,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:56:46,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:56:46,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:56:46,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:56:46,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:56:46,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 152 [2023-08-26 06:56:46,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 30 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:56:46,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 152 [2023-08-26 06:56:46,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:56:46,155 INFO L124 PetriNetUnfolderBase]: 92/214 cut-off events. [2023-08-26 06:56:46,156 INFO L125 PetriNetUnfolderBase]: For 94/96 co-relation queries the response was YES. [2023-08-26 06:56:46,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 214 events. 92/214 cut-off events. For 94/96 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 828 event pairs, 46 based on Foata normal form. 2/186 useless extension candidates. Maximal degree in co-relation 511. Up to 176 conditions per place. [2023-08-26 06:56:46,157 INFO L140 encePairwiseOnDemand]: 147/152 looper letters, 29 selfloop transitions, 6 changer transitions 2/40 dead transitions. [2023-08-26 06:56:46,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 212 flow [2023-08-26 06:56:46,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:56:46,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:56:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 226 transitions. [2023-08-26 06:56:46,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956140350877193 [2023-08-26 06:56:46,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 226 transitions. [2023-08-26 06:56:46,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 226 transitions. [2023-08-26 06:56:46,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:56:46,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 226 transitions. [2023-08-26 06:56:46,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,165 INFO L175 Difference]: Start difference. First operand has 29 places, 30 transitions, 102 flow. Second operand 3 states and 226 transitions. [2023-08-26 06:56:46,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 212 flow [2023-08-26 06:56:46,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:56:46,168 INFO L231 Difference]: Finished difference. Result has 30 places, 34 transitions, 132 flow [2023-08-26 06:56:46,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=30, PETRI_TRANSITIONS=34} [2023-08-26 06:56:46,168 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-08-26 06:56:46,169 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 34 transitions, 132 flow [2023-08-26 06:56:46,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:56:46,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:56:46,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 06:56:46,169 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:56:46,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:56:46,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1967053461, now seen corresponding path program 1 times [2023-08-26 06:56:46,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:56:46,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058024189] [2023-08-26 06:56:46,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:56:46,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:56:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:56:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:56:46,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:56:46,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058024189] [2023-08-26 06:56:46,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058024189] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:56:46,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:56:46,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:56:46,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896223058] [2023-08-26 06:56:46,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:56:46,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:56:46,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:56:46,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:56:46,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:56:46,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 152 [2023-08-26 06:56:46,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 34 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:56:46,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 152 [2023-08-26 06:56:46,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:56:46,313 INFO L124 PetriNetUnfolderBase]: 90/218 cut-off events. [2023-08-26 06:56:46,313 INFO L125 PetriNetUnfolderBase]: For 107/115 co-relation queries the response was YES. [2023-08-26 06:56:46,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 218 events. 90/218 cut-off events. For 107/115 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 840 event pairs, 30 based on Foata normal form. 2/194 useless extension candidates. Maximal degree in co-relation 544. Up to 141 conditions per place. [2023-08-26 06:56:46,314 INFO L140 encePairwiseOnDemand]: 146/152 looper letters, 26 selfloop transitions, 7 changer transitions 14/50 dead transitions. [2023-08-26 06:56:46,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 50 transitions, 283 flow [2023-08-26 06:56:46,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:56:46,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:56:46,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-08-26 06:56:46,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5109649122807017 [2023-08-26 06:56:46,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-08-26 06:56:46,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-08-26 06:56:46,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:56:46,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-08-26 06:56:46,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,319 INFO L175 Difference]: Start difference. First operand has 30 places, 34 transitions, 132 flow. Second operand 3 states and 233 transitions. [2023-08-26 06:56:46,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 50 transitions, 283 flow [2023-08-26 06:56:46,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 50 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:56:46,322 INFO L231 Difference]: Finished difference. Result has 33 places, 32 transitions, 158 flow [2023-08-26 06:56:46,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=33, PETRI_TRANSITIONS=32} [2023-08-26 06:56:46,323 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-26 06:56:46,323 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 32 transitions, 158 flow [2023-08-26 06:56:46,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:56:46,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:56:46,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 06:56:46,324 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:56:46,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:56:46,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1247659984, now seen corresponding path program 1 times [2023-08-26 06:56:46,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:56:46,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862860202] [2023-08-26 06:56:46,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:56:46,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:56:46,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:56:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:56:46,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:56:46,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862860202] [2023-08-26 06:56:46,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862860202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:56:46,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:56:46,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 06:56:46,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990259793] [2023-08-26 06:56:46,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:56:46,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 06:56:46,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:56:46,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 06:56:46,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 06:56:46,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 152 [2023-08-26 06:56:46,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:56:46,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 152 [2023-08-26 06:56:46,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:56:46,540 INFO L124 PetriNetUnfolderBase]: 53/253 cut-off events. [2023-08-26 06:56:46,540 INFO L125 PetriNetUnfolderBase]: For 386/396 co-relation queries the response was YES. [2023-08-26 06:56:46,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 253 events. 53/253 cut-off events. For 386/396 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1548 event pairs, 22 based on Foata normal form. 9/249 useless extension candidates. Maximal degree in co-relation 727. Up to 62 conditions per place. [2023-08-26 06:56:46,542 INFO L140 encePairwiseOnDemand]: 147/152 looper letters, 25 selfloop transitions, 5 changer transitions 9/53 dead transitions. [2023-08-26 06:56:46,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 344 flow [2023-08-26 06:56:46,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 06:56:46,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 06:56:46,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 294 transitions. [2023-08-26 06:56:46,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355263157894735 [2023-08-26 06:56:46,544 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 294 transitions. [2023-08-26 06:56:46,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 294 transitions. [2023-08-26 06:56:46,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:56:46,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 294 transitions. [2023-08-26 06:56:46,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.5) internal successors, (294), 4 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,547 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,547 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 158 flow. Second operand 4 states and 294 transitions. [2023-08-26 06:56:46,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 344 flow [2023-08-26 06:56:46,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 53 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:56:46,551 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 186 flow [2023-08-26 06:56:46,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-08-26 06:56:46,551 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-08-26 06:56:46,552 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 186 flow [2023-08-26 06:56:46,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:56:46,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:56:46,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 06:56:46,552 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:56:46,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:56:46,553 INFO L85 PathProgramCache]: Analyzing trace with hash -399147700, now seen corresponding path program 2 times [2023-08-26 06:56:46,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:56:46,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702914229] [2023-08-26 06:56:46,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:56:46,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:56:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:56:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:56:46,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:56:46,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702914229] [2023-08-26 06:56:46,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702914229] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:56:46,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:56:46,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 06:56:46,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617907365] [2023-08-26 06:56:46,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:56:46,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 06:56:46,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:56:46,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 06:56:46,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 06:56:46,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 152 [2023-08-26 06:56:46,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:56:46,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 152 [2023-08-26 06:56:46,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:56:46,702 INFO L124 PetriNetUnfolderBase]: 31/158 cut-off events. [2023-08-26 06:56:46,704 INFO L125 PetriNetUnfolderBase]: For 197/201 co-relation queries the response was YES. [2023-08-26 06:56:46,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 158 events. 31/158 cut-off events. For 197/201 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 795 event pairs, 9 based on Foata normal form. 4/155 useless extension candidates. Maximal degree in co-relation 484. Up to 64 conditions per place. [2023-08-26 06:56:46,707 INFO L140 encePairwiseOnDemand]: 147/152 looper letters, 15 selfloop transitions, 3 changer transitions 12/44 dead transitions. [2023-08-26 06:56:46,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 292 flow [2023-08-26 06:56:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 06:56:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 06:56:46,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2023-08-26 06:56:46,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2023-08-26 06:56:46,713 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 288 transitions. [2023-08-26 06:56:46,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 288 transitions. [2023-08-26 06:56:46,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:56:46,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 288 transitions. [2023-08-26 06:56:46,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 72.0) internal successors, (288), 4 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,717 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,717 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 186 flow. Second operand 4 states and 288 transitions. [2023-08-26 06:56:46,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 292 flow [2023-08-26 06:56:46,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 06:56:46,722 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 172 flow [2023-08-26 06:56:46,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-08-26 06:56:46,724 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-08-26 06:56:46,724 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 172 flow [2023-08-26 06:56:46,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:56:46,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:56:46,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 06:56:46,725 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-26 06:56:46,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:56:46,725 INFO L85 PathProgramCache]: Analyzing trace with hash 865816143, now seen corresponding path program 1 times [2023-08-26 06:56:46,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:56:46,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943613849] [2023-08-26 06:56:46,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:56:46,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:56:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:56:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:56:46,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:56:46,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943613849] [2023-08-26 06:56:46,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943613849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:56:46,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:56:46,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 06:56:46,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707604979] [2023-08-26 06:56:46,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:56:46,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 06:56:46,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:56:46,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 06:56:46,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 06:56:46,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 152 [2023-08-26 06:56:46,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:56:46,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 152 [2023-08-26 06:56:46,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:56:46,905 INFO L124 PetriNetUnfolderBase]: 3/18 cut-off events. [2023-08-26 06:56:46,905 INFO L125 PetriNetUnfolderBase]: For 49/50 co-relation queries the response was YES. [2023-08-26 06:56:46,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 18 events. 3/18 cut-off events. For 49/50 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 12 event pairs, 0 based on Foata normal form. 7/25 useless extension candidates. Maximal degree in co-relation 63. Up to 7 conditions per place. [2023-08-26 06:56:46,906 INFO L140 encePairwiseOnDemand]: 148/152 looper letters, 0 selfloop transitions, 0 changer transitions 15/15 dead transitions. [2023-08-26 06:56:46,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 15 transitions, 106 flow [2023-08-26 06:56:46,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 06:56:46,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 06:56:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 344 transitions. [2023-08-26 06:56:46,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2023-08-26 06:56:46,907 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 344 transitions. [2023-08-26 06:56:46,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 344 transitions. [2023-08-26 06:56:46,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:56:46,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 344 transitions. [2023-08-26 06:56:46,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,911 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,911 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 172 flow. Second operand 5 states and 344 transitions. [2023-08-26 06:56:46,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 15 transitions, 106 flow [2023-08-26 06:56:46,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 15 transitions, 61 flow, removed 7 selfloop flow, removed 10 redundant places. [2023-08-26 06:56:46,912 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-26 06:56:46,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2023-08-26 06:56:46,914 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -5 predicate places. [2023-08-26 06:56:46,914 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-26 06:56:46,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 06:56:46,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 7 remaining) [2023-08-26 06:56:46,917 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-08-26 06:56:46,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-26 06:56:46,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-08-26 06:56:46,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-08-26 06:56:46,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-08-26 06:56:46,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-08-26 06:56:46,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 06:56:46,918 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2023-08-26 06:56:46,922 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 06:56:46,925 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 06:56:46,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:56:46 BasicIcfg [2023-08-26 06:56:46,928 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 06:56:46,931 INFO L158 Benchmark]: Toolchain (without parser) took 4502.07ms. Allocated memory is still 375.4MB. Free memory was 330.1MB in the beginning and 207.4MB in the end (delta: 122.6MB). Peak memory consumption was 123.7MB. Max. memory is 16.0GB. [2023-08-26 06:56:46,931 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 375.4MB. Free memory is still 352.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 06:56:46,936 INFO L158 Benchmark]: CACSL2BoogieTranslator took 562.70ms. Allocated memory is still 375.4MB. Free memory was 329.0MB in the beginning and 301.7MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-26 06:56:46,936 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.61ms. Allocated memory is still 375.4MB. Free memory was 301.7MB in the beginning and 299.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 06:56:46,936 INFO L158 Benchmark]: Boogie Preprocessor took 31.30ms. Allocated memory is still 375.4MB. Free memory was 299.6MB in the beginning and 298.6MB in the end (delta: 995.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 06:56:46,936 INFO L158 Benchmark]: RCFGBuilder took 399.84ms. Allocated memory is still 375.4MB. Free memory was 298.6MB in the beginning and 282.9MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-26 06:56:46,937 INFO L158 Benchmark]: TraceAbstraction took 3436.57ms. Allocated memory is still 375.4MB. Free memory was 282.9MB in the beginning and 207.4MB in the end (delta: 75.4MB). Peak memory consumption was 77.5MB. Max. memory is 16.0GB. [2023-08-26 06:56:46,938 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 375.4MB. Free memory is still 352.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 562.70ms. Allocated memory is still 375.4MB. Free memory was 329.0MB in the beginning and 301.7MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.61ms. Allocated memory is still 375.4MB. Free memory was 301.7MB in the beginning and 299.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.30ms. Allocated memory is still 375.4MB. Free memory was 299.6MB in the beginning and 298.6MB in the end (delta: 995.7kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 399.84ms. Allocated memory is still 375.4MB. Free memory was 298.6MB in the beginning and 282.9MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 3436.57ms. Allocated memory is still 375.4MB. Free memory was 282.9MB in the beginning and 207.4MB in the end (delta: 75.4MB). Peak memory consumption was 77.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 121]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [121] - GenericResultAtLocation [Line: 483]: Unsoundness Warning unspecified type, defaulting to int C: short [483] - GenericResultAtLocation [Line: 483]: Unsoundness Warning unspecified type, defaulting to int C: short [483] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 80 PlacesBefore, 26 PlacesAfterwards, 80 TransitionsBefore, 24 TransitionsAfterwards, 1394 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 2 ChoiceCompositions, 71 TotalNumberOfCompositions, 3783 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1555, independent: 1371, independent conditional: 0, independent unconditional: 1371, dependent: 184, dependent conditional: 0, dependent unconditional: 184, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 803, independent: 767, independent conditional: 0, independent unconditional: 767, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1555, independent: 604, independent conditional: 0, independent unconditional: 604, dependent: 148, dependent conditional: 0, dependent unconditional: 148, unknown: 803, unknown conditional: 0, unknown unconditional: 803] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 949]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 949]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 932]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 932]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 97 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: 3.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 225 IncrementalHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 18 mSDtfsCounter, 225 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=4, InterpolantAutomatonStates: 22, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 110 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 06:56:46,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...