/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 04:02:36,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 04:02:36,880 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 04:02:36,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 04:02:36,885 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 04:02:36,910 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 04:02:36,910 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 04:02:36,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 04:02:36,914 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 04:02:36,921 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 04:02:36,921 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 04:02:36,921 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 04:02:36,921 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 04:02:36,922 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 04:02:36,922 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 04:02:36,922 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 04:02:36,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 04:02:36,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 04:02:36,923 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 04:02:36,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 04:02:36,923 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 04:02:36,923 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 04:02:36,923 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 04:02:36,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 04:02:36,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 04:02:36,924 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 04:02:36,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 04:02:36,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:02:36,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 04:02:36,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 04:02:36,926 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 04:02:36,926 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 04:02:36,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 04:02:36,926 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 04:02:36,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 04:02:36,927 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 04:02:37,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 04:02:37,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 04:02:37,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 04:02:37,264 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 04:02:37,265 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 04:02:37,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-08-25 04:02:38,275 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 04:02:38,481 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 04:02:38,482 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-08-25 04:02:38,490 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/262ff1f53/75c2806102b449d58f85aaa03ed21d62/FLAG6aa765e1a [2023-08-25 04:02:38,499 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/262ff1f53/75c2806102b449d58f85aaa03ed21d62 [2023-08-25 04:02:38,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 04:02:38,501 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 04:02:38,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 04:02:38,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 04:02:38,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 04:02:38,504 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:02:38" (1/1) ... [2023-08-25 04:02:38,505 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d39fd8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:02:38, skipping insertion in model container [2023-08-25 04:02:38,505 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:02:38" (1/1) ... [2023-08-25 04:02:38,528 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 04:02:38,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:02:38,749 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 04:02:38,761 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 04:02:38,762 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 04:02:38,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:02:38,808 INFO L206 MainTranslator]: Completed translation [2023-08-25 04:02:38,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:02:38 WrapperNode [2023-08-25 04:02:38,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 04:02:38,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 04:02:38,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 04:02:38,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 04:02:38,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:02:38" (1/1) ... [2023-08-25 04:02:38,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:02:38" (1/1) ... [2023-08-25 04:02:38,858 INFO L138 Inliner]: procedures = 170, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2023-08-25 04:02:38,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 04:02:38,858 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 04:02:38,858 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 04:02:38,859 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 04:02:38,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:02:38" (1/1) ... [2023-08-25 04:02:38,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:02:38" (1/1) ... [2023-08-25 04:02:38,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:02:38" (1/1) ... [2023-08-25 04:02:38,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:02:38" (1/1) ... [2023-08-25 04:02:38,875 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:02:38" (1/1) ... [2023-08-25 04:02:38,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:02:38" (1/1) ... [2023-08-25 04:02:38,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:02:38" (1/1) ... [2023-08-25 04:02:38,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:02:38" (1/1) ... [2023-08-25 04:02:38,881 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 04:02:38,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 04:02:38,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 04:02:38,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 04:02:38,882 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:02:38" (1/1) ... [2023-08-25 04:02:38,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:02:38,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:02:38,917 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 04:02:38,922 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 04:02:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 04:02:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 04:02:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 04:02:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 04:02:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 04:02:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 04:02:38,944 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 04:02:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 04:02:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 04:02:38,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 04:02:38,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 04:02:38,945 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 04:02:39,036 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 04:02:39,038 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 04:02:39,307 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 04:02:39,315 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 04:02:39,315 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-25 04:02:39,317 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:02:39 BoogieIcfgContainer [2023-08-25 04:02:39,317 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 04:02:39,318 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 04:02:39,318 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 04:02:39,320 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 04:02:39,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 04:02:38" (1/3) ... [2023-08-25 04:02:39,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71775708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:02:39, skipping insertion in model container [2023-08-25 04:02:39,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:02:38" (2/3) ... [2023-08-25 04:02:39,321 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71775708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:02:39, skipping insertion in model container [2023-08-25 04:02:39,321 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:02:39" (3/3) ... [2023-08-25 04:02:39,322 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2023-08-25 04:02:39,333 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 04:02:39,333 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-25 04:02:39,333 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 04:02:39,391 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-25 04:02:39,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 161 transitions, 330 flow [2023-08-25 04:02:39,502 INFO L124 PetriNetUnfolderBase]: 19/214 cut-off events. [2023-08-25 04:02:39,503 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:02:39,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 214 events. 19/214 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 665 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 119. Up to 4 conditions per place. [2023-08-25 04:02:39,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 161 transitions, 330 flow [2023-08-25 04:02:39,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 161 transitions, 330 flow [2023-08-25 04:02:39,516 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:02:39,522 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 161 transitions, 330 flow [2023-08-25 04:02:39,524 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 161 transitions, 330 flow [2023-08-25 04:02:39,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 161 transitions, 330 flow [2023-08-25 04:02:39,567 INFO L124 PetriNetUnfolderBase]: 19/214 cut-off events. [2023-08-25 04:02:39,567 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:02:39,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 214 events. 19/214 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 665 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 119. Up to 4 conditions per place. [2023-08-25 04:02:39,572 INFO L119 LiptonReduction]: Number of co-enabled transitions 7198 [2023-08-25 04:02:42,347 INFO L134 LiptonReduction]: Checked pairs total: 27844 [2023-08-25 04:02:42,347 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-25 04:02:42,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:02:42,359 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;@38f90ab6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:02:42,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-25 04:02:42,362 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:02:42,362 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-08-25 04:02:42,362 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:02:42,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:02:42,362 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-25 04:02:42,363 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 9 more)] === [2023-08-25 04:02:42,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:02:42,365 INFO L85 PathProgramCache]: Analyzing trace with hash -54306059, now seen corresponding path program 1 times [2023-08-25 04:02:42,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:02:42,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692974222] [2023-08-25 04:02:42,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:02:42,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:02:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:02:42,466 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:02:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:02:42,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:02:42,513 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:02:42,513 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2023-08-25 04:02:42,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 12 remaining) [2023-08-25 04:02:42,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 12 remaining) [2023-08-25 04:02:42,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (8 of 12 remaining) [2023-08-25 04:02:42,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 12 remaining) [2023-08-25 04:02:42,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 12 remaining) [2023-08-25 04:02:42,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 12 remaining) [2023-08-25 04:02:42,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 12 remaining) [2023-08-25 04:02:42,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 12 remaining) [2023-08-25 04:02:42,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 12 remaining) [2023-08-25 04:02:42,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 12 remaining) [2023-08-25 04:02:42,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 12 remaining) [2023-08-25 04:02:42,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 04:02:42,517 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 04:02:42,519 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:02:42,519 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 04:02:42,549 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 04:02:42,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 224 transitions, 466 flow [2023-08-25 04:02:42,599 INFO L124 PetriNetUnfolderBase]: 34/361 cut-off events. [2023-08-25 04:02:42,599 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 04:02:42,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 361 events. 34/361 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1415 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2023-08-25 04:02:42,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 224 transitions, 466 flow [2023-08-25 04:02:42,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 224 transitions, 466 flow [2023-08-25 04:02:42,606 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:02:42,606 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 224 transitions, 466 flow [2023-08-25 04:02:42,606 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 224 transitions, 466 flow [2023-08-25 04:02:42,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 224 transitions, 466 flow [2023-08-25 04:02:42,638 INFO L124 PetriNetUnfolderBase]: 34/361 cut-off events. [2023-08-25 04:02:42,639 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 04:02:42,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 361 events. 34/361 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1415 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 216. Up to 8 conditions per place. [2023-08-25 04:02:42,650 INFO L119 LiptonReduction]: Number of co-enabled transitions 23180 [2023-08-25 04:02:45,305 INFO L134 LiptonReduction]: Checked pairs total: 116303 [2023-08-25 04:02:45,306 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-25 04:02:45,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:02:45,308 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;@38f90ab6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:02:45,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-25 04:02:45,311 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:02:45,311 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2023-08-25 04:02:45,311 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:02:45,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:02:45,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:02:45,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 04:02:45,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:02:45,312 INFO L85 PathProgramCache]: Analyzing trace with hash 2027896384, now seen corresponding path program 1 times [2023-08-25 04:02:45,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:02:45,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881972] [2023-08-25 04:02:45,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:02:45,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:02:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:02:45,430 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 04:02:45,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:02:45,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881972] [2023-08-25 04:02:45,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:02:45,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:02:45,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:02:45,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180311679] [2023-08-25 04:02:45,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:02:45,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:02:45,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:02:45,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:02:45,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:02:45,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 357 [2023-08-25 04:02:45,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 115 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:02:45,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:02:45,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 357 [2023-08-25 04:02:45,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:02:46,169 INFO L124 PetriNetUnfolderBase]: 3470/9176 cut-off events. [2023-08-25 04:02:46,169 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-08-25 04:02:46,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14818 conditions, 9176 events. 3470/9176 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 85528 event pairs, 1608 based on Foata normal form. 759/9208 useless extension candidates. Maximal degree in co-relation 1085. Up to 5529 conditions per place. [2023-08-25 04:02:46,207 INFO L140 encePairwiseOnDemand]: 340/357 looper letters, 52 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-08-25 04:02:46,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 115 transitions, 356 flow [2023-08-25 04:02:46,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:02:46,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:02:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 654 transitions. [2023-08-25 04:02:46,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6106442577030813 [2023-08-25 04:02:46,218 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 654 transitions. [2023-08-25 04:02:46,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 654 transitions. [2023-08-25 04:02:46,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:02:46,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 654 transitions. [2023-08-25 04:02:46,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:02:46,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:02:46,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 357.0) internal successors, (1428), 4 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:02:46,229 INFO L175 Difference]: Start difference. First operand has 104 places, 115 transitions, 248 flow. Second operand 3 states and 654 transitions. [2023-08-25 04:02:46,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 115 transitions, 356 flow [2023-08-25 04:02:46,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 115 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:02:46,233 INFO L231 Difference]: Finished difference. Result has 107 places, 102 transitions, 232 flow [2023-08-25 04:02:46,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=357, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=232, PETRI_PLACES=107, PETRI_TRANSITIONS=102} [2023-08-25 04:02:46,236 INFO L281 CegarLoopForPetriNet]: 104 programPoint places, 3 predicate places. [2023-08-25 04:02:46,236 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 102 transitions, 232 flow [2023-08-25 04:02:46,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.0) internal successors, (582), 3 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:02:46,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:02:46,237 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-25 04:02:46,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 04:02:46,237 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 13 more)] === [2023-08-25 04:02:46,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:02:46,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1125823949, now seen corresponding path program 1 times [2023-08-25 04:02:46,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:02:46,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865529664] [2023-08-25 04:02:46,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:02:46,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:02:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:02:46,252 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:02:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:02:46,265 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:02:46,265 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:02:46,265 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-08-25 04:02:46,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-25 04:02:46,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-08-25 04:02:46,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (12 of 16 remaining) [2023-08-25 04:02:46,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-25 04:02:46,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-08-25 04:02:46,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-08-25 04:02:46,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-25 04:02:46,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-08-25 04:02:46,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-25 04:02:46,266 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-08-25 04:02:46,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-08-25 04:02:46,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-25 04:02:46,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-25 04:02:46,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-25 04:02:46,267 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-08-25 04:02:46,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 04:02:46,267 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-25 04:02:46,268 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:02:46,268 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 04:02:46,293 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 04:02:46,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 287 transitions, 604 flow [2023-08-25 04:02:46,339 INFO L124 PetriNetUnfolderBase]: 54/553 cut-off events. [2023-08-25 04:02:46,339 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 04:02:46,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 553 events. 54/553 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2430 event pairs, 1 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 369. Up to 16 conditions per place. [2023-08-25 04:02:46,344 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 287 transitions, 604 flow [2023-08-25 04:02:46,348 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 287 transitions, 604 flow [2023-08-25 04:02:46,348 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:02:46,348 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 287 transitions, 604 flow [2023-08-25 04:02:46,348 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 287 transitions, 604 flow [2023-08-25 04:02:46,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 287 transitions, 604 flow [2023-08-25 04:02:46,439 INFO L124 PetriNetUnfolderBase]: 54/553 cut-off events. [2023-08-25 04:02:46,439 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 04:02:46,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 553 events. 54/553 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2430 event pairs, 1 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 369. Up to 16 conditions per place. [2023-08-25 04:02:46,458 INFO L119 LiptonReduction]: Number of co-enabled transitions 46482 [2023-08-25 04:02:49,526 INFO L134 LiptonReduction]: Checked pairs total: 247665 [2023-08-25 04:02:49,526 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-08-25 04:02:49,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:02:49,529 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;@38f90ab6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:02:49,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-25 04:02:49,532 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:02:49,532 INFO L124 PetriNetUnfolderBase]: 4/51 cut-off events. [2023-08-25 04:02:49,532 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:02:49,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:02:49,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:02:49,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 04:02:49,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:02:49,533 INFO L85 PathProgramCache]: Analyzing trace with hash 39691993, now seen corresponding path program 1 times [2023-08-25 04:02:49,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:02:49,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728224879] [2023-08-25 04:02:49,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:02:49,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:02:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:02:49,591 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 04:02:49,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:02:49,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728224879] [2023-08-25 04:02:49,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728224879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:02:49,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:02:49,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:02:49,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590609580] [2023-08-25 04:02:49,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:02:49,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:02:49,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:02:49,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:02:49,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:02:49,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 445 [2023-08-25 04:02:49,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 159 transitions, 348 flow. Second operand has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:02:49,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:02:49,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 445 [2023-08-25 04:02:49,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:03:00,366 INFO L124 PetriNetUnfolderBase]: 71431/141628 cut-off events. [2023-08-25 04:03:00,366 INFO L125 PetriNetUnfolderBase]: For 2286/2286 co-relation queries the response was YES. [2023-08-25 04:03:00,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242416 conditions, 141628 events. 71431/141628 cut-off events. For 2286/2286 co-relation queries the response was YES. Maximal size of possible extension queue 3084. Compared 1619881 event pairs, 46285 based on Foata normal form. 14397/144009 useless extension candidates. Maximal degree in co-relation 14665. Up to 99230 conditions per place. [2023-08-25 04:03:01,322 INFO L140 encePairwiseOnDemand]: 421/445 looper letters, 66 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2023-08-25 04:03:01,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 152 transitions, 470 flow [2023-08-25 04:03:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:03:01,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:03:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 840 transitions. [2023-08-25 04:03:01,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6292134831460674 [2023-08-25 04:03:01,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 840 transitions. [2023-08-25 04:03:01,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 840 transitions. [2023-08-25 04:03:01,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:03:01,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 840 transitions. [2023-08-25 04:03:01,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.0) internal successors, (840), 3 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:03:01,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:03:01,331 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 445.0) internal successors, (1780), 4 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:03:01,331 INFO L175 Difference]: Start difference. First operand has 142 places, 159 transitions, 348 flow. Second operand 3 states and 840 transitions. [2023-08-25 04:03:01,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 152 transitions, 470 flow [2023-08-25 04:03:01,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 152 transitions, 470 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:03:01,340 INFO L231 Difference]: Finished difference. Result has 145 places, 139 transitions, 318 flow [2023-08-25 04:03:01,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=145, PETRI_TRANSITIONS=139} [2023-08-25 04:03:01,341 INFO L281 CegarLoopForPetriNet]: 142 programPoint places, 3 predicate places. [2023-08-25 04:03:01,342 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 139 transitions, 318 flow [2023-08-25 04:03:01,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:03:01,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:03:01,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:03:01,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 04:03:01,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (and 17 more)] === [2023-08-25 04:03:01,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:03:01,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1975033264, now seen corresponding path program 1 times [2023-08-25 04:03:01,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:03:01,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891400526] [2023-08-25 04:03:01,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:03:01,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:03:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:03:01,632 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 04:03:01,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:03:01,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891400526] [2023-08-25 04:03:01,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891400526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:03:01,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:03:01,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 04:03:01,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784985158] [2023-08-25 04:03:01,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:03:01,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 04:03:01,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:03:01,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 04:03:01,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 04:03:01,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 445 [2023-08-25 04:03:01,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 139 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 168.83333333333334) internal successors, (1013), 6 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 04:03:01,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:03:01,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 445 [2023-08-25 04:03:01,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand