./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/01b_inc.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/01b_inc.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 f8560a665e9f795d0e42a91570dfb6029ba2a9fa9f17754a8891b62ccadb5cdc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 14:05:58,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 14:05:59,059 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-10 14:05:59,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 14:05:59,067 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 14:05:59,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 14:05:59,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 14:05:59,102 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 14:05:59,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 14:05:59,103 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 14:05:59,104 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 14:05:59,104 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 14:05:59,105 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 14:05:59,105 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 14:05:59,105 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 14:05:59,106 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 14:05:59,106 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 14:05:59,109 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 14:05:59,110 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 14:05:59,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 14:05:59,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 14:05:59,116 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 14:05:59,117 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-10 14:05:59,117 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 14:05:59,117 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 14:05:59,117 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 14:05:59,118 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 14:05:59,118 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 14:05:59,118 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 14:05:59,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 14:05:59,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 14:05:59,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:05:59,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 14:05:59,120 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 14:05:59,120 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 14:05:59,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 14:05:59,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 14:05:59,121 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 14:05:59,121 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 14:05:59,121 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 14:05:59,122 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 14:05:59,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8560a665e9f795d0e42a91570dfb6029ba2a9fa9f17754a8891b62ccadb5cdc [2024-11-10 14:05:59,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 14:05:59,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 14:05:59,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 14:05:59,390 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 14:05:59,390 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 14:05:59,391 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/01b_inc.i [2024-11-10 14:06:00,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 14:06:01,087 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 14:06:01,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc.i [2024-11-10 14:06:01,102 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c104cf30f/dc4f61427f4b49cb8a9beaa699679718/FLAG7b61d7c21 [2024-11-10 14:06:01,435 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c104cf30f/dc4f61427f4b49cb8a9beaa699679718 [2024-11-10 14:06:01,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 14:06:01,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 14:06:01,441 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 14:06:01,441 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 14:06:01,447 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 14:06:01,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:06:01" (1/1) ... [2024-11-10 14:06:01,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@561260ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:01, skipping insertion in model container [2024-11-10 14:06:01,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:06:01" (1/1) ... [2024-11-10 14:06:01,494 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 14:06:01,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:06:01,878 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 14:06:01,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:06:02,001 INFO L204 MainTranslator]: Completed translation [2024-11-10 14:06:02,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:02 WrapperNode [2024-11-10 14:06:02,002 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 14:06:02,003 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 14:06:02,004 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 14:06:02,004 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 14:06:02,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:02" (1/1) ... [2024-11-10 14:06:02,030 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:02" (1/1) ... [2024-11-10 14:06:02,048 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-11-10 14:06:02,049 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 14:06:02,049 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 14:06:02,050 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 14:06:02,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 14:06:02,058 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:02" (1/1) ... [2024-11-10 14:06:02,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:02" (1/1) ... [2024-11-10 14:06:02,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:02" (1/1) ... [2024-11-10 14:06:02,064 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:02" (1/1) ... [2024-11-10 14:06:02,068 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:02" (1/1) ... [2024-11-10 14:06:02,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:02" (1/1) ... [2024-11-10 14:06:02,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:02" (1/1) ... [2024-11-10 14:06:02,072 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:02" (1/1) ... [2024-11-10 14:06:02,074 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 14:06:02,075 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 14:06:02,075 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 14:06:02,075 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 14:06:02,076 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:02" (1/1) ... [2024-11-10 14:06:02,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:06:02,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:06:02,114 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 14:06:02,120 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 14:06:02,167 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 14:06:02,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 14:06:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 14:06:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 14:06:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 14:06:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-10 14:06:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 14:06:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 14:06:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 14:06:02,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 14:06:02,170 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 14:06:02,288 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 14:06:02,290 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 14:06:02,427 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 14:06:02,427 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 14:06:02,479 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 14:06:02,480 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 14:06:02,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:06:02 BoogieIcfgContainer [2024-11-10 14:06:02,480 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 14:06:02,483 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 14:06:02,483 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 14:06:02,486 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 14:06:02,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 02:06:01" (1/3) ... [2024-11-10 14:06:02,487 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c412bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:06:02, skipping insertion in model container [2024-11-10 14:06:02,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:06:02" (2/3) ... [2024-11-10 14:06:02,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c412bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:06:02, skipping insertion in model container [2024-11-10 14:06:02,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:06:02" (3/3) ... [2024-11-10 14:06:02,490 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2024-11-10 14:06:02,507 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 14:06:02,507 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-10 14:06:02,508 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 14:06:02,559 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:06:02,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 55 transitions, 114 flow [2024-11-10 14:06:02,619 INFO L124 PetriNetUnfolderBase]: 3/65 cut-off events. [2024-11-10 14:06:02,619 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:06:02,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 65 events. 3/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 36. Up to 4 conditions per place. [2024-11-10 14:06:02,624 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 55 transitions, 114 flow [2024-11-10 14:06:02,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 55 transitions, 114 flow [2024-11-10 14:06:02,638 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:06:02,645 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;@5f0f0a03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:06:02,645 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-10 14:06:02,656 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:06:02,657 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2024-11-10 14:06:02,657 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:06:02,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:02,658 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] [2024-11-10 14:06:02,658 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-11-10 14:06:02,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:02,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1858647225, now seen corresponding path program 1 times [2024-11-10 14:06:02,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:02,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478838676] [2024-11-10 14:06:02,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:02,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:02,903 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 14:06:02,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:02,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478838676] [2024-11-10 14:06:02,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478838676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:06:02,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:06:02,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:06:02,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520437567] [2024-11-10 14:06:02,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:06:02,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:06:02,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:02,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:06:02,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:06:02,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 55 [2024-11-10 14:06:02,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 14:06:02,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:02,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 55 [2024-11-10 14:06:02,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:03,027 INFO L124 PetriNetUnfolderBase]: 1/51 cut-off events. [2024-11-10 14:06:03,028 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 14:06:03,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 51 events. 1/51 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 22/72 useless extension candidates. Maximal degree in co-relation 36. Up to 6 conditions per place. [2024-11-10 14:06:03,032 INFO L140 encePairwiseOnDemand]: 46/55 looper letters, 7 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-11-10 14:06:03,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 116 flow [2024-11-10 14:06:03,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:06:03,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:06:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-11-10 14:06:03,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2024-11-10 14:06:03,065 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 114 flow. Second operand 3 states and 135 transitions. [2024-11-10 14:06:03,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 116 flow [2024-11-10 14:06:03,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 116 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 14:06:03,070 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 102 flow [2024-11-10 14:06:03,072 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-11-10 14:06:03,077 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2024-11-10 14:06:03,077 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 102 flow [2024-11-10 14:06:03,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 14:06:03,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:03,078 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 14:06:03,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 14:06:03,078 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-11-10 14:06:03,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:03,079 INFO L85 PathProgramCache]: Analyzing trace with hash 146276833, now seen corresponding path program 1 times [2024-11-10 14:06:03,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:03,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280724785] [2024-11-10 14:06:03,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:03,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:06:03,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:06:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:06:03,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:06:03,169 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:06:03,171 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-10 14:06:03,173 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2024-11-10 14:06:03,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2024-11-10 14:06:03,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2024-11-10 14:06:03,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2024-11-10 14:06:03,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2024-11-10 14:06:03,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2024-11-10 14:06:03,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2024-11-10 14:06:03,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2024-11-10 14:06:03,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 14:06:03,176 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 14:06:03,180 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:06:03,180 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 14:06:03,215 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:06:03,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 80 transitions, 170 flow [2024-11-10 14:06:03,241 INFO L124 PetriNetUnfolderBase]: 5/102 cut-off events. [2024-11-10 14:06:03,242 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 14:06:03,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 102 events. 5/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 66. Up to 6 conditions per place. [2024-11-10 14:06:03,243 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 80 transitions, 170 flow [2024-11-10 14:06:03,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 80 transitions, 170 flow [2024-11-10 14:06:03,245 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:06:03,248 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;@5f0f0a03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:06:03,248 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-10 14:06:03,261 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:06:03,261 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2024-11-10 14:06:03,262 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:06:03,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:03,263 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] [2024-11-10 14:06:03,263 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-10 14:06:03,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:03,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1870888927, now seen corresponding path program 1 times [2024-11-10 14:06:03,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:03,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078088747] [2024-11-10 14:06:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:03,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:03,331 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 14:06:03,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:03,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078088747] [2024-11-10 14:06:03,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078088747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:06:03,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:06:03,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:06:03,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547627174] [2024-11-10 14:06:03,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:06:03,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:06:03,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:03,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:06:03,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:06:03,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 80 [2024-11-10 14:06:03,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 80 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 14:06:03,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:03,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 80 [2024-11-10 14:06:03,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:03,539 INFO L124 PetriNetUnfolderBase]: 128/444 cut-off events. [2024-11-10 14:06:03,540 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2024-11-10 14:06:03,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 444 events. 128/444 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2297 event pairs, 45 based on Foata normal form. 294/714 useless extension candidates. Maximal degree in co-relation 625. Up to 184 conditions per place. [2024-11-10 14:06:03,550 INFO L140 encePairwiseOnDemand]: 58/80 looper letters, 31 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2024-11-10 14:06:03,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 90 transitions, 281 flow [2024-11-10 14:06:03,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:06:03,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:06:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2024-11-10 14:06:03,553 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8708333333333333 [2024-11-10 14:06:03,553 INFO L175 Difference]: Start difference. First operand has 82 places, 80 transitions, 170 flow. Second operand 3 states and 209 transitions. [2024-11-10 14:06:03,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 90 transitions, 281 flow [2024-11-10 14:06:03,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 90 transitions, 281 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 14:06:03,557 INFO L231 Difference]: Finished difference. Result has 78 places, 83 transitions, 256 flow [2024-11-10 14:06:03,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=78, PETRI_TRANSITIONS=83} [2024-11-10 14:06:03,558 INFO L277 CegarLoopForPetriNet]: 82 programPoint places, -4 predicate places. [2024-11-10 14:06:03,558 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 256 flow [2024-11-10 14:06:03,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 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 14:06:03,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:03,559 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 14:06:03,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 14:06:03,559 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-10 14:06:03,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:03,560 INFO L85 PathProgramCache]: Analyzing trace with hash 458790119, now seen corresponding path program 1 times [2024-11-10 14:06:03,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:03,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960257137] [2024-11-10 14:06:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:03,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:06:03,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:06:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:06:03,621 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:06:03,623 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:06:03,624 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-10 14:06:03,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-11-10 14:06:03,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-11-10 14:06:03,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-11-10 14:06:03,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-11-10 14:06:03,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-11-10 14:06:03,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-11-10 14:06:03,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-11-10 14:06:03,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-11-10 14:06:03,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-11-10 14:06:03,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-11-10 14:06:03,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-11-10 14:06:03,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-11-10 14:06:03,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 14:06:03,628 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 14:06:03,629 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:06:03,629 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 14:06:03,664 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:06:03,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 105 transitions, 228 flow [2024-11-10 14:06:03,688 INFO L124 PetriNetUnfolderBase]: 7/139 cut-off events. [2024-11-10 14:06:03,688 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 14:06:03,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 139 events. 7/139 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 308 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 106. Up to 8 conditions per place. [2024-11-10 14:06:03,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 105 transitions, 228 flow [2024-11-10 14:06:03,693 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 105 transitions, 228 flow [2024-11-10 14:06:03,694 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:06:03,695 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;@5f0f0a03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:06:03,695 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-10 14:06:03,700 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:06:03,700 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2024-11-10 14:06:03,700 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:06:03,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:03,701 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] [2024-11-10 14:06:03,701 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-10 14:06:03,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:03,701 INFO L85 PathProgramCache]: Analyzing trace with hash 141453026, now seen corresponding path program 1 times [2024-11-10 14:06:03,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:03,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875931037] [2024-11-10 14:06:03,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:03,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:03,768 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 14:06:03,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:03,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875931037] [2024-11-10 14:06:03,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875931037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:06:03,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:06:03,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:06:03,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672926659] [2024-11-10 14:06:03,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:06:03,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:06:03,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:03,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:06:03,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:06:03,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 105 [2024-11-10 14:06:03,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 14:06:03,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:03,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 105 [2024-11-10 14:06:03,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:04,825 INFO L124 PetriNetUnfolderBase]: 3448/7481 cut-off events. [2024-11-10 14:06:04,826 INFO L125 PetriNetUnfolderBase]: For 862/862 co-relation queries the response was YES. [2024-11-10 14:06:04,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13390 conditions, 7481 events. 3448/7481 cut-off events. For 862/862 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 64888 event pairs, 1316 based on Foata normal form. 4121/11105 useless extension candidates. Maximal degree in co-relation 6152. Up to 3764 conditions per place. [2024-11-10 14:06:04,896 INFO L140 encePairwiseOnDemand]: 73/105 looper letters, 47 selfloop transitions, 18 changer transitions 0/123 dead transitions. [2024-11-10 14:06:04,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 123 transitions, 406 flow [2024-11-10 14:06:04,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:06:04,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:06:04,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2024-11-10 14:06:04,899 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2024-11-10 14:06:04,901 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 228 flow. Second operand 3 states and 270 transitions. [2024-11-10 14:06:04,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 123 transitions, 406 flow [2024-11-10 14:06:04,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 123 transitions, 402 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-10 14:06:04,906 INFO L231 Difference]: Finished difference. Result has 102 places, 112 transitions, 360 flow [2024-11-10 14:06:04,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=102, PETRI_TRANSITIONS=112} [2024-11-10 14:06:04,909 INFO L277 CegarLoopForPetriNet]: 108 programPoint places, -6 predicate places. [2024-11-10 14:06:04,909 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 112 transitions, 360 flow [2024-11-10 14:06:04,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 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 14:06:04,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:04,910 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 14:06:04,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 14:06:04,911 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-10 14:06:04,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:04,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1899477673, now seen corresponding path program 1 times [2024-11-10 14:06:04,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:04,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359870780] [2024-11-10 14:06:04,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:04,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:06:04,939 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:06:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:06:04,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:06:04,965 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:06:04,966 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-10 14:06:04,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2024-11-10 14:06:04,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2024-11-10 14:06:04,966 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2024-11-10 14:06:04,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2024-11-10 14:06:04,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2024-11-10 14:06:04,967 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2024-11-10 14:06:04,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2024-11-10 14:06:04,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2024-11-10 14:06:04,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2024-11-10 14:06:04,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2024-11-10 14:06:04,969 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2024-11-10 14:06:04,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2024-11-10 14:06:04,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2024-11-10 14:06:04,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2024-11-10 14:06:04,970 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2024-11-10 14:06:04,971 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2024-11-10 14:06:04,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 14:06:04,972 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 14:06:04,972 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:06:04,972 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 14:06:05,012 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:06:05,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 130 transitions, 288 flow [2024-11-10 14:06:05,034 INFO L124 PetriNetUnfolderBase]: 9/176 cut-off events. [2024-11-10 14:06:05,034 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 14:06:05,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 176 events. 9/176 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 424 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 147. Up to 10 conditions per place. [2024-11-10 14:06:05,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 130 transitions, 288 flow [2024-11-10 14:06:05,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 130 transitions, 288 flow [2024-11-10 14:06:05,041 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:06:05,042 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;@5f0f0a03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:06:05,044 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-10 14:06:05,047 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:06:05,047 INFO L124 PetriNetUnfolderBase]: 2/43 cut-off events. [2024-11-10 14:06:05,048 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:06:05,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:05,048 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] [2024-11-10 14:06:05,048 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-10 14:06:05,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:05,049 INFO L85 PathProgramCache]: Analyzing trace with hash 725744380, now seen corresponding path program 1 times [2024-11-10 14:06:05,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:05,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818644456] [2024-11-10 14:06:05,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:05,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:05,092 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 14:06:05,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:05,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818644456] [2024-11-10 14:06:05,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818644456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:06:05,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:06:05,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:06:05,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021738483] [2024-11-10 14:06:05,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:06:05,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:06:05,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:05,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:06:05,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:06:05,136 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 130 [2024-11-10 14:06:05,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 130 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 14:06:05,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:05,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 130 [2024-11-10 14:06:05,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:16,944 INFO L124 PetriNetUnfolderBase]: 69778/123134 cut-off events. [2024-11-10 14:06:16,945 INFO L125 PetriNetUnfolderBase]: For 20075/20075 co-relation queries the response was YES. [2024-11-10 14:06:17,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229040 conditions, 123134 events. 69778/123134 cut-off events. For 20075/20075 co-relation queries the response was YES. Maximal size of possible extension queue 4669. Compared 1291829 event pairs, 26564 based on Foata normal form. 56652/170865 useless extension candidates. Maximal degree in co-relation 167113. Up to 66562 conditions per place. [2024-11-10 14:06:18,556 INFO L140 encePairwiseOnDemand]: 88/130 looper letters, 63 selfloop transitions, 24 changer transitions 0/156 dead transitions. [2024-11-10 14:06:18,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 156 transitions, 535 flow [2024-11-10 14:06:18,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:06:18,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:06:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2024-11-10 14:06:18,559 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8487179487179487 [2024-11-10 14:06:18,559 INFO L175 Difference]: Start difference. First operand has 134 places, 130 transitions, 288 flow. Second operand 3 states and 331 transitions. [2024-11-10 14:06:18,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 156 transitions, 535 flow [2024-11-10 14:06:18,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 156 transitions, 523 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-10 14:06:18,575 INFO L231 Difference]: Finished difference. Result has 126 places, 141 transitions, 464 flow [2024-11-10 14:06:18,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=126, PETRI_TRANSITIONS=141} [2024-11-10 14:06:18,576 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, -8 predicate places. [2024-11-10 14:06:18,576 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 141 transitions, 464 flow [2024-11-10 14:06:18,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 14:06:18,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:18,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 14:06:18,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 14:06:18,577 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-10 14:06:18,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:18,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1358852513, now seen corresponding path program 1 times [2024-11-10 14:06:18,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:18,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543941961] [2024-11-10 14:06:18,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:18,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:18,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:06:18,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:18,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543941961] [2024-11-10 14:06:18,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543941961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:06:18,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:06:18,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:06:18,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874592826] [2024-11-10 14:06:18,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:06:18,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:06:18,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:18,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:06:18,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:06:18,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 130 [2024-11-10 14:06:18,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 141 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 14:06:18,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:18,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 130 [2024-11-10 14:06:18,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:06:19,797 INFO L124 PetriNetUnfolderBase]: 2812/8862 cut-off events. [2024-11-10 14:06:19,797 INFO L125 PetriNetUnfolderBase]: For 4480/4504 co-relation queries the response was YES. [2024-11-10 14:06:19,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18973 conditions, 8862 events. 2812/8862 cut-off events. For 4480/4504 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 91442 event pairs, 858 based on Foata normal form. 839/9502 useless extension candidates. Maximal degree in co-relation 8051. Up to 3491 conditions per place. [2024-11-10 14:06:19,849 INFO L140 encePairwiseOnDemand]: 118/130 looper letters, 28 selfloop transitions, 12 changer transitions 0/128 dead transitions. [2024-11-10 14:06:19,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 128 transitions, 485 flow [2024-11-10 14:06:19,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:06:19,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:06:19,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2024-11-10 14:06:19,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.823076923076923 [2024-11-10 14:06:19,851 INFO L175 Difference]: Start difference. First operand has 126 places, 141 transitions, 464 flow. Second operand 3 states and 321 transitions. [2024-11-10 14:06:19,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 128 transitions, 485 flow [2024-11-10 14:06:19,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 128 transitions, 453 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 14:06:19,861 INFO L231 Difference]: Finished difference. Result has 118 places, 117 transitions, 344 flow [2024-11-10 14:06:19,861 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=118, PETRI_TRANSITIONS=117} [2024-11-10 14:06:19,863 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, -16 predicate places. [2024-11-10 14:06:19,864 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 117 transitions, 344 flow [2024-11-10 14:06:19,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 14:06:19,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:19,864 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 14:06:19,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 14:06:19,865 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-10 14:06:19,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:19,865 INFO L85 PathProgramCache]: Analyzing trace with hash -2059995983, now seen corresponding path program 1 times [2024-11-10 14:06:19,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:19,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948815596] [2024-11-10 14:06:19,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:19,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:06:19,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:06:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:06:19,902 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:06:19,903 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:06:19,903 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-11-10 14:06:19,903 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2024-11-10 14:06:19,903 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2024-11-10 14:06:19,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2024-11-10 14:06:19,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2024-11-10 14:06:19,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2024-11-10 14:06:19,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2024-11-10 14:06:19,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2024-11-10 14:06:19,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2024-11-10 14:06:19,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2024-11-10 14:06:19,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2024-11-10 14:06:19,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2024-11-10 14:06:19,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2024-11-10 14:06:19,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2024-11-10 14:06:19,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2024-11-10 14:06:19,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2024-11-10 14:06:19,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2024-11-10 14:06:19,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2024-11-10 14:06:19,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2024-11-10 14:06:19,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2024-11-10 14:06:19,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2024-11-10 14:06:19,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 14:06:19,908 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-10 14:06:19,912 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:06:19,912 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-10 14:06:19,953 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:06:19,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 155 transitions, 350 flow [2024-11-10 14:06:19,975 INFO L124 PetriNetUnfolderBase]: 11/213 cut-off events. [2024-11-10 14:06:19,976 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-10 14:06:19,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 213 events. 11/213 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 537 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 189. Up to 12 conditions per place. [2024-11-10 14:06:19,977 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 155 transitions, 350 flow [2024-11-10 14:06:19,980 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 155 transitions, 350 flow [2024-11-10 14:06:19,983 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:06:19,983 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;@5f0f0a03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:06:19,983 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-10 14:06:19,985 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:06:19,985 INFO L124 PetriNetUnfolderBase]: 2/45 cut-off events. [2024-11-10 14:06:19,986 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:06:19,986 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:06:19,986 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] [2024-11-10 14:06:19,986 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-10 14:06:19,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:06:19,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2046943599, now seen corresponding path program 1 times [2024-11-10 14:06:19,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:06:19,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084538028] [2024-11-10 14:06:19,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:06:19,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:06:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:06:20,017 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 14:06:20,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:06:20,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084538028] [2024-11-10 14:06:20,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084538028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:06:20,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:06:20,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 14:06:20,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640991838] [2024-11-10 14:06:20,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:06:20,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:06:20,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:06:20,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:06:20,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:06:20,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 155 [2024-11-10 14:06:20,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 155 transitions, 350 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 14:06:20,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:06:20,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 155 [2024-11-10 14:06:20,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand