./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8b500e58ad9de43c2267c6cdc33609b02abfe24fc1cf283e17f14a4a70ea61c --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 14:08:39,796 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 14:08:39,877 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-10 14:08:39,890 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 14:08:39,892 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 14:08:39,914 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 14:08:39,915 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 14:08:39,915 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 14:08:39,916 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 14:08:39,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 14:08:39,917 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 14:08:39,917 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 14:08:39,918 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 14:08:39,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 14:08:39,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 14:08:39,919 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 14:08:39,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 14:08:39,920 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 14:08:39,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 14:08:39,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 14:08:39,921 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 14:08:39,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 14:08:39,923 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-10 14:08:39,923 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 14:08:39,924 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 14:08:39,924 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 14:08:39,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 14:08:39,925 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 14:08:39,925 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 14:08:39,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 14:08:39,926 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 14:08:39,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:08:39,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 14:08:39,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 14:08:39,927 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 14:08:39,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 14:08:39,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 14:08:39,928 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 14:08:39,928 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 14:08:39,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 14:08:39,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 14:08:39,929 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8b500e58ad9de43c2267c6cdc33609b02abfe24fc1cf283e17f14a4a70ea61c [2024-11-10 14:08:40,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 14:08:40,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 14:08:40,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 14:08:40,209 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 14:08:40,209 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 14:08:40,211 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i [2024-11-10 14:08:41,619 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 14:08:41,892 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 14:08:41,893 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/30_Function_Pointer3_vs.i [2024-11-10 14:08:41,913 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/487d9716d/31e063231710447dbb6dc7f15e396f6b/FLAG875418a9e [2024-11-10 14:08:42,201 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/487d9716d/31e063231710447dbb6dc7f15e396f6b [2024-11-10 14:08:42,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 14:08:42,205 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 14:08:42,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 14:08:42,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 14:08:42,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 14:08:42,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:08:42" (1/1) ... [2024-11-10 14:08:42,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36200e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:08:42, skipping insertion in model container [2024-11-10 14:08:42,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:08:42" (1/1) ... [2024-11-10 14:08:42,253 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 14:08:42,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:08:42,601 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 14:08:42,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:08:42,682 INFO L204 MainTranslator]: Completed translation [2024-11-10 14:08:42,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:08:42 WrapperNode [2024-11-10 14:08:42,683 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 14:08:42,684 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 14:08:42,684 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 14:08:42,684 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 14:08:42,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:08:42" (1/1) ... [2024-11-10 14:08:42,709 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:08:42" (1/1) ... [2024-11-10 14:08:42,737 INFO L138 Inliner]: procedures = 173, calls = 16, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 107 [2024-11-10 14:08:42,738 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 14:08:42,740 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 14:08:42,741 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 14:08:42,741 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 14:08:42,748 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:08:42" (1/1) ... [2024-11-10 14:08:42,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:08:42" (1/1) ... [2024-11-10 14:08:42,754 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:08:42" (1/1) ... [2024-11-10 14:08:42,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:08:42" (1/1) ... [2024-11-10 14:08:42,759 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:08:42" (1/1) ... [2024-11-10 14:08:42,759 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:08:42" (1/1) ... [2024-11-10 14:08:42,760 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:08:42" (1/1) ... [2024-11-10 14:08:42,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:08:42" (1/1) ... [2024-11-10 14:08:42,764 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 14:08:42,765 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 14:08:42,765 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 14:08:42,765 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 14:08:42,765 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:08:42" (1/1) ... [2024-11-10 14:08:42,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:08:42,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:08:42,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 14:08:42,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 14:08:42,857 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-11-10 14:08:42,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-11-10 14:08:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 14:08:42,858 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 14:08:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 14:08:42,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-10 14:08:42,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 14:08:42,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 14:08:42,860 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 14:08:42,983 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 14:08:42,985 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 14:08:43,301 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 14:08:43,301 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 14:08:43,379 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 14:08:43,379 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 14:08:43,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:08:43 BoogieIcfgContainer [2024-11-10 14:08:43,380 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 14:08:43,382 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 14:08:43,382 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 14:08:43,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 14:08:43,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 02:08:42" (1/3) ... [2024-11-10 14:08:43,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11945a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:08:43, skipping insertion in model container [2024-11-10 14:08:43,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:08:42" (2/3) ... [2024-11-10 14:08:43,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11945a48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:08:43, skipping insertion in model container [2024-11-10 14:08:43,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:08:43" (3/3) ... [2024-11-10 14:08:43,389 INFO L112 eAbstractionObserver]: Analyzing ICFG 30_Function_Pointer3_vs.i [2024-11-10 14:08:43,405 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 14:08:43,406 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-10 14:08:43,406 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 14:08:43,480 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:08:43,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 112 transitions, 232 flow [2024-11-10 14:08:43,567 INFO L124 PetriNetUnfolderBase]: 8/121 cut-off events. [2024-11-10 14:08:43,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:08:43,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 121 events. 8/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 151 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 108. Up to 4 conditions per place. [2024-11-10 14:08:43,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 112 transitions, 232 flow [2024-11-10 14:08:43,580 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 111 transitions, 229 flow [2024-11-10 14:08:43,592 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:08:43,599 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@64c7ee3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:08:43,600 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-10 14:08:43,612 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:08:43,614 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2024-11-10 14:08:43,614 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:08:43,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:08:43,615 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:08:43,616 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-10 14:08:43,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:08:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash -848505259, now seen corresponding path program 1 times [2024-11-10 14:08:43,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:08:43,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614688756] [2024-11-10 14:08:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:08:43,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:08:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:08:43,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:08:43,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:08:43,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614688756] [2024-11-10 14:08:43,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614688756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:08:43,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:08:43,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:08:43,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930259764] [2024-11-10 14:08:43,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:08:43,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:08:43,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:08:43,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:08:43,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:08:43,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 112 [2024-11-10 14:08:43,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 111 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:08:43,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:08:43,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 112 [2024-11-10 14:08:43,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:08:44,032 INFO L124 PetriNetUnfolderBase]: 20/223 cut-off events. [2024-11-10 14:08:44,033 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 14:08:44,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 223 events. 20/223 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 608 event pairs, 3 based on Foata normal form. 78/283 useless extension candidates. Maximal degree in co-relation 250. Up to 25 conditions per place. [2024-11-10 14:08:44,037 INFO L140 encePairwiseOnDemand]: 98/112 looper letters, 11 selfloop transitions, 3 changer transitions 0/100 dead transitions. [2024-11-10 14:08:44,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 100 transitions, 238 flow [2024-11-10 14:08:44,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:08:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:08:44,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 314 transitions. [2024-11-10 14:08:44,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9345238095238095 [2024-11-10 14:08:44,056 INFO L175 Difference]: Start difference. First operand has 110 places, 111 transitions, 229 flow. Second operand 3 states and 314 transitions. [2024-11-10 14:08:44,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 100 transitions, 238 flow [2024-11-10 14:08:44,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 237 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 14:08:44,066 INFO L231 Difference]: Finished difference. Result has 100 places, 97 transitions, 220 flow [2024-11-10 14:08:44,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=100, PETRI_TRANSITIONS=97} [2024-11-10 14:08:44,075 INFO L277 CegarLoopForPetriNet]: 110 programPoint places, -10 predicate places. [2024-11-10 14:08:44,075 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 97 transitions, 220 flow [2024-11-10 14:08:44,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:08:44,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:08:44,076 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:08:44,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 14:08:44,077 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-10 14:08:44,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:08:44,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1799959039, now seen corresponding path program 1 times [2024-11-10 14:08:44,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:08:44,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557856214] [2024-11-10 14:08:44,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:08:44,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:08:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:08:44,117 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:08:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:08:44,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:08:44,170 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:08:44,171 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-10 14:08:44,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-11-10 14:08:44,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-11-10 14:08:44,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-11-10 14:08:44,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-11-10 14:08:44,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-11-10 14:08:44,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-11-10 14:08:44,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 14 remaining) [2024-11-10 14:08:44,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-11-10 14:08:44,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-11-10 14:08:44,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-11-10 14:08:44,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-11-10 14:08:44,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-11-10 14:08:44,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-11-10 14:08:44,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 14:08:44,176 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 14:08:44,178 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:08:44,179 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 14:08:44,228 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:08:44,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 194 transitions, 408 flow [2024-11-10 14:08:44,278 INFO L124 PetriNetUnfolderBase]: 11/196 cut-off events. [2024-11-10 14:08:44,278 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 14:08:44,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 196 events. 11/196 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 390 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 203. Up to 6 conditions per place. [2024-11-10 14:08:44,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 194 transitions, 408 flow [2024-11-10 14:08:44,289 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 174 transitions, 361 flow [2024-11-10 14:08:44,292 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:08:44,293 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@64c7ee3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:08:44,294 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-10 14:08:44,298 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:08:44,299 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2024-11-10 14:08:44,299 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:08:44,300 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:08:44,300 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:08:44,300 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2024-11-10 14:08:44,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:08:44,303 INFO L85 PathProgramCache]: Analyzing trace with hash 307926741, now seen corresponding path program 1 times [2024-11-10 14:08:44,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:08:44,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099759428] [2024-11-10 14:08:44,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:08:44,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:08:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:08:44,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:08:44,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:08:44,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099759428] [2024-11-10 14:08:44,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099759428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:08:44,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:08:44,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:08:44,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638499447] [2024-11-10 14:08:44,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:08:44,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:08:44,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:08:44,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:08:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:08:44,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 194 [2024-11-10 14:08:44,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 174 transitions, 361 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:08:44,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:08:44,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 194 [2024-11-10 14:08:44,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:08:44,609 INFO L124 PetriNetUnfolderBase]: 166/942 cut-off events. [2024-11-10 14:08:44,609 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-11-10 14:08:44,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1268 conditions, 942 events. 166/942 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5594 event pairs, 49 based on Foata normal form. 392/1248 useless extension candidates. Maximal degree in co-relation 1245. Up to 137 conditions per place. [2024-11-10 14:08:44,622 INFO L140 encePairwiseOnDemand]: 175/194 looper letters, 18 selfloop transitions, 4 changer transitions 0/163 dead transitions. [2024-11-10 14:08:44,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 163 transitions, 391 flow [2024-11-10 14:08:44,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:08:44,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:08:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2024-11-10 14:08:44,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9020618556701031 [2024-11-10 14:08:44,627 INFO L175 Difference]: Start difference. First operand has 173 places, 174 transitions, 361 flow. Second operand 3 states and 525 transitions. [2024-11-10 14:08:44,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 163 transitions, 391 flow [2024-11-10 14:08:44,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 163 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 14:08:44,631 INFO L231 Difference]: Finished difference. Result has 159 places, 157 transitions, 352 flow [2024-11-10 14:08:44,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=194, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=159, PETRI_TRANSITIONS=157} [2024-11-10 14:08:44,632 INFO L277 CegarLoopForPetriNet]: 173 programPoint places, -14 predicate places. [2024-11-10 14:08:44,633 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 157 transitions, 352 flow [2024-11-10 14:08:44,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:08:44,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:08:44,634 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:08:44,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 14:08:44,634 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 16 more)] === [2024-11-10 14:08:44,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:08:44,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1357955480, now seen corresponding path program 1 times [2024-11-10 14:08:44,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:08:44,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10161306] [2024-11-10 14:08:44,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:08:44,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:08:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:08:44,654 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:08:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:08:44,678 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:08:44,678 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:08:44,678 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2024-11-10 14:08:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2024-11-10 14:08:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2024-11-10 14:08:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2024-11-10 14:08:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2024-11-10 14:08:44,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (14 of 20 remaining) [2024-11-10 14:08:44,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2024-11-10 14:08:44,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 20 remaining) [2024-11-10 14:08:44,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2024-11-10 14:08:44,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2024-11-10 14:08:44,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2024-11-10 14:08:44,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2024-11-10 14:08:44,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2024-11-10 14:08:44,681 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2024-11-10 14:08:44,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2024-11-10 14:08:44,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2024-11-10 14:08:44,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2024-11-10 14:08:44,682 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2024-11-10 14:08:44,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2024-11-10 14:08:44,683 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2024-11-10 14:08:44,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 14:08:44,683 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 14:08:44,684 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:08:44,684 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 14:08:44,757 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:08:44,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 276 transitions, 588 flow [2024-11-10 14:08:44,813 INFO L124 PetriNetUnfolderBase]: 14/271 cut-off events. [2024-11-10 14:08:44,813 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 14:08:44,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 271 events. 14/271 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 747 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 282. Up to 8 conditions per place. [2024-11-10 14:08:44,819 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 276 transitions, 588 flow [2024-11-10 14:08:44,824 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 237 transitions, 495 flow [2024-11-10 14:08:44,825 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:08:44,826 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@64c7ee3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:08:44,827 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-10 14:08:44,830 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:08:44,831 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2024-11-10 14:08:44,831 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:08:44,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:08:44,831 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:08:44,832 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-10 14:08:44,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:08:44,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1411100093, now seen corresponding path program 1 times [2024-11-10 14:08:44,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:08:44,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412031757] [2024-11-10 14:08:44,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:08:44,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:08:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:08:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:08:44,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:08:44,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412031757] [2024-11-10 14:08:44,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412031757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:08:44,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:08:44,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:08:44,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771460994] [2024-11-10 14:08:44,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:08:44,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:08:44,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:08:44,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:08:44,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:08:44,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 276 [2024-11-10 14:08:44,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 237 transitions, 495 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:08:44,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:08:44,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 276 [2024-11-10 14:08:44,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:08:46,156 INFO L124 PetriNetUnfolderBase]: 1146/6425 cut-off events. [2024-11-10 14:08:46,157 INFO L125 PetriNetUnfolderBase]: For 604/604 co-relation queries the response was YES. [2024-11-10 14:08:46,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8324 conditions, 6425 events. 1146/6425 cut-off events. For 604/604 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 63659 event pairs, 407 based on Foata normal form. 1698/7669 useless extension candidates. Maximal degree in co-relation 8300. Up to 831 conditions per place. [2024-11-10 14:08:46,308 INFO L140 encePairwiseOnDemand]: 252/276 looper letters, 25 selfloop transitions, 5 changer transitions 0/226 dead transitions. [2024-11-10 14:08:46,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 226 transitions, 548 flow [2024-11-10 14:08:46,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:08:46,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:08:46,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 736 transitions. [2024-11-10 14:08:46,310 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2024-11-10 14:08:46,310 INFO L175 Difference]: Start difference. First operand has 236 places, 237 transitions, 495 flow. Second operand 3 states and 736 transitions. [2024-11-10 14:08:46,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 226 transitions, 548 flow [2024-11-10 14:08:46,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 226 transitions, 543 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 14:08:46,317 INFO L231 Difference]: Finished difference. Result has 218 places, 217 transitions, 484 flow [2024-11-10 14:08:46,317 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=218, PETRI_TRANSITIONS=217} [2024-11-10 14:08:46,318 INFO L277 CegarLoopForPetriNet]: 236 programPoint places, -18 predicate places. [2024-11-10 14:08:46,318 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 217 transitions, 484 flow [2024-11-10 14:08:46,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:08:46,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:08:46,319 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:08:46,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 14:08:46,320 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-10 14:08:46,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:08:46,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1730868474, now seen corresponding path program 1 times [2024-11-10 14:08:46,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:08:46,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740933124] [2024-11-10 14:08:46,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:08:46,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:08:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:08:46,336 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:08:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:08:46,358 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:08:46,359 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:08:46,362 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2024-11-10 14:08:46,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2024-11-10 14:08:46,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2024-11-10 14:08:46,362 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2024-11-10 14:08:46,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2024-11-10 14:08:46,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (20 of 26 remaining) [2024-11-10 14:08:46,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2024-11-10 14:08:46,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 26 remaining) [2024-11-10 14:08:46,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2024-11-10 14:08:46,363 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2024-11-10 14:08:46,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2024-11-10 14:08:46,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (14 of 26 remaining) [2024-11-10 14:08:46,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2024-11-10 14:08:46,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2024-11-10 14:08:46,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2024-11-10 14:08:46,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2024-11-10 14:08:46,364 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2024-11-10 14:08:46,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (8 of 26 remaining) [2024-11-10 14:08:46,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2024-11-10 14:08:46,365 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2024-11-10 14:08:46,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2024-11-10 14:08:46,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2024-11-10 14:08:46,367 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2024-11-10 14:08:46,368 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 26 remaining) [2024-11-10 14:08:46,368 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2024-11-10 14:08:46,369 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2024-11-10 14:08:46,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 14:08:46,369 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 14:08:46,370 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:08:46,370 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 14:08:46,447 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:08:46,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 351 places, 358 transitions, 772 flow [2024-11-10 14:08:46,500 INFO L124 PetriNetUnfolderBase]: 17/346 cut-off events. [2024-11-10 14:08:46,501 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 14:08:46,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 346 events. 17/346 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1136 event pairs, 0 based on Foata normal form. 0/303 useless extension candidates. Maximal degree in co-relation 362. Up to 10 conditions per place. [2024-11-10 14:08:46,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 351 places, 358 transitions, 772 flow [2024-11-10 14:08:46,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 299 places, 300 transitions, 631 flow [2024-11-10 14:08:46,512 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:08:46,513 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@64c7ee3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:08:46,513 INFO L334 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2024-11-10 14:08:46,515 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:08:46,516 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2024-11-10 14:08:46,516 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:08:46,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:08:46,516 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:08:46,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-11-10 14:08:46,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:08:46,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1676263485, now seen corresponding path program 1 times [2024-11-10 14:08:46,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:08:46,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004754430] [2024-11-10 14:08:46,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:08:46,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:08:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:08:46,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:08:46,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:08:46,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004754430] [2024-11-10 14:08:46,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004754430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:08:46,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:08:46,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:08:46,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410643794] [2024-11-10 14:08:46,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:08:46,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:08:46,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:08:46,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:08:46,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:08:46,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 358 [2024-11-10 14:08:46,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 300 transitions, 631 flow. Second operand has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:08:46,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:08:46,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 358 [2024-11-10 14:08:46,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:08:51,036 INFO L124 PetriNetUnfolderBase]: 6094/22990 cut-off events. [2024-11-10 14:08:51,036 INFO L125 PetriNetUnfolderBase]: For 4168/4168 co-relation queries the response was YES. [2024-11-10 14:08:51,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32954 conditions, 22990 events. 6094/22990 cut-off events. For 4168/4168 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 273149 event pairs, 2789 based on Foata normal form. 7192/28402 useless extension candidates. Maximal degree in co-relation 32929. Up to 4695 conditions per place. [2024-11-10 14:08:51,413 INFO L140 encePairwiseOnDemand]: 329/358 looper letters, 32 selfloop transitions, 6 changer transitions 0/289 dead transitions. [2024-11-10 14:08:51,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 289 transitions, 709 flow [2024-11-10 14:08:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:08:51,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:08:51,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 947 transitions. [2024-11-10 14:08:51,418 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8817504655493482 [2024-11-10 14:08:51,418 INFO L175 Difference]: Start difference. First operand has 299 places, 300 transitions, 631 flow. Second operand 3 states and 947 transitions. [2024-11-10 14:08:51,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 289 transitions, 709 flow [2024-11-10 14:08:51,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 289 transitions, 696 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-10 14:08:51,431 INFO L231 Difference]: Finished difference. Result has 277 places, 277 transitions, 616 flow [2024-11-10 14:08:51,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=616, PETRI_PLACES=277, PETRI_TRANSITIONS=277} [2024-11-10 14:08:51,433 INFO L277 CegarLoopForPetriNet]: 299 programPoint places, -22 predicate places. [2024-11-10 14:08:51,433 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 277 transitions, 616 flow [2024-11-10 14:08:51,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 289.0) internal successors, (867), 3 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:08:51,434 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:08:51,434 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:08:51,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 14:08:51,435 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2024-11-10 14:08:51,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:08:51,435 INFO L85 PathProgramCache]: Analyzing trace with hash 976988377, now seen corresponding path program 1 times [2024-11-10 14:08:51,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:08:51,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74119512] [2024-11-10 14:08:51,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:08:51,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:08:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:08:51,461 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:08:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:08:51,481 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:08:51,482 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:08:51,482 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 32 remaining) [2024-11-10 14:08:51,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (30 of 32 remaining) [2024-11-10 14:08:51,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (29 of 32 remaining) [2024-11-10 14:08:51,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (28 of 32 remaining) [2024-11-10 14:08:51,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (27 of 32 remaining) [2024-11-10 14:08:51,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (26 of 32 remaining) [2024-11-10 14:08:51,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (25 of 32 remaining) [2024-11-10 14:08:51,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 32 remaining) [2024-11-10 14:08:51,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (23 of 32 remaining) [2024-11-10 14:08:51,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (22 of 32 remaining) [2024-11-10 14:08:51,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (21 of 32 remaining) [2024-11-10 14:08:51,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (20 of 32 remaining) [2024-11-10 14:08:51,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (19 of 32 remaining) [2024-11-10 14:08:51,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (18 of 32 remaining) [2024-11-10 14:08:51,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (17 of 32 remaining) [2024-11-10 14:08:51,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (16 of 32 remaining) [2024-11-10 14:08:51,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (15 of 32 remaining) [2024-11-10 14:08:51,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (14 of 32 remaining) [2024-11-10 14:08:51,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (13 of 32 remaining) [2024-11-10 14:08:51,492 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (12 of 32 remaining) [2024-11-10 14:08:51,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (11 of 32 remaining) [2024-11-10 14:08:51,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (10 of 32 remaining) [2024-11-10 14:08:51,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (9 of 32 remaining) [2024-11-10 14:08:51,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (8 of 32 remaining) [2024-11-10 14:08:51,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (7 of 32 remaining) [2024-11-10 14:08:51,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (6 of 32 remaining) [2024-11-10 14:08:51,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (5 of 32 remaining) [2024-11-10 14:08:51,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (4 of 32 remaining) [2024-11-10 14:08:51,493 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 32 remaining) [2024-11-10 14:08:51,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 32 remaining) [2024-11-10 14:08:51,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (1 of 32 remaining) [2024-11-10 14:08:51,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 32 remaining) [2024-11-10 14:08:51,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 14:08:51,494 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 14:08:51,495 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:08:51,495 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-10 14:08:51,573 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:08:51,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 431 places, 440 transitions, 960 flow [2024-11-10 14:08:51,648 INFO L124 PetriNetUnfolderBase]: 20/421 cut-off events. [2024-11-10 14:08:51,648 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-10 14:08:51,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 421 events. 20/421 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1527 event pairs, 0 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 443. Up to 12 conditions per place. [2024-11-10 14:08:51,658 INFO L82 GeneralOperation]: Start removeDead. Operand has 431 places, 440 transitions, 960 flow [2024-11-10 14:08:51,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 362 places, 363 transitions, 769 flow [2024-11-10 14:08:51,665 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:08:51,668 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@64c7ee3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:08:51,668 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-10 14:08:51,671 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:08:51,671 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2024-11-10 14:08:51,671 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:08:51,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:08:51,671 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:08:51,672 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-11-10 14:08:51,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:08:51,672 INFO L85 PathProgramCache]: Analyzing trace with hash -539095905, now seen corresponding path program 1 times [2024-11-10 14:08:51,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:08:51,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113686907] [2024-11-10 14:08:51,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:08:51,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:08:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:08:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:08:51,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:08:51,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113686907] [2024-11-10 14:08:51,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113686907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:08:51,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:08:51,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:08:51,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174154379] [2024-11-10 14:08:51,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:08:51,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:08:51,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:08:51,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:08:51,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:08:51,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 440 [2024-11-10 14:08:51,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 363 transitions, 769 flow. Second operand has 3 states, 3 states have (on average 354.0) internal successors, (1062), 3 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:08:51,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:08:51,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 440 [2024-11-10 14:08:51,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:09:15,418 INFO L124 PetriNetUnfolderBase]: 31426/112149 cut-off events. [2024-11-10 14:09:15,419 INFO L125 PetriNetUnfolderBase]: For 27102/27102 co-relation queries the response was YES. [2024-11-10 14:09:17,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161138 conditions, 112149 events. 31426/112149 cut-off events. For 27102/27102 co-relation queries the response was YES. Maximal size of possible extension queue 1982. Compared 1618526 event pairs, 14347 based on Foata normal form. 29286/133274 useless extension candidates. Maximal degree in co-relation 161112. Up to 24103 conditions per place. [2024-11-10 14:09:18,848 INFO L140 encePairwiseOnDemand]: 406/440 looper letters, 39 selfloop transitions, 7 changer transitions 0/352 dead transitions. [2024-11-10 14:09:18,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 352 transitions, 874 flow [2024-11-10 14:09:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:09:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:09:18,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1158 transitions. [2024-11-10 14:09:18,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8772727272727273 [2024-11-10 14:09:18,852 INFO L175 Difference]: Start difference. First operand has 362 places, 363 transitions, 769 flow. Second operand 3 states and 1158 transitions. [2024-11-10 14:09:18,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 352 transitions, 874 flow [2024-11-10 14:09:18,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 352 transitions, 849 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-10 14:09:18,868 INFO L231 Difference]: Finished difference. Result has 336 places, 337 transitions, 748 flow [2024-11-10 14:09:18,868 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=440, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=748, PETRI_PLACES=336, PETRI_TRANSITIONS=337} [2024-11-10 14:09:18,870 INFO L277 CegarLoopForPetriNet]: 362 programPoint places, -26 predicate places. [2024-11-10 14:09:18,871 INFO L471 AbstractCegarLoop]: Abstraction has has 336 places, 337 transitions, 748 flow [2024-11-10 14:09:18,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 354.0) internal successors, (1062), 3 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:09:18,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:09:18,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:09:18,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 14:09:18,872 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err4ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE (and 34 more)] === [2024-11-10 14:09:18,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:09:18,873 INFO L85 PathProgramCache]: Analyzing trace with hash 302623868, now seen corresponding path program 1 times [2024-11-10 14:09:18,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:09:18,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295382207] [2024-11-10 14:09:18,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:09:18,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:09:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:09:18,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:09:18,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:09:18,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295382207] [2024-11-10 14:09:18,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295382207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:09:18,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:09:18,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:09:18,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957987793] [2024-11-10 14:09:18,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:09:18,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:09:18,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:09:18,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:09:18,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:09:18,989 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 359 out of 440 [2024-11-10 14:09:18,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 337 transitions, 748 flow. Second operand has 3 states, 3 states have (on average 361.0) internal successors, (1083), 3 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 14:09:18,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:09:18,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 359 of 440 [2024-11-10 14:09:18,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand