./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/02_inc_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/02_inc_cas.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 ede09850ec25b369afc0cd16258beff942f9fc7c5304532be31fd5925a934e14 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:28:46,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:28:46,226 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 09:28:46,230 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:28:46,230 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:28:46,249 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:28:46,249 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:28:46,250 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:28:46,250 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:28:46,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:28:46,251 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:28:46,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:28:46,252 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:28:46,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:28:46,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:28:46,253 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:28:46,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:28:46,254 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:28:46,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:28:46,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:28:46,255 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:28:46,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:28:46,256 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 09:28:46,256 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:28:46,256 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 09:28:46,257 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:28:46,257 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:28:46,257 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:28:46,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:28:46,258 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:28:46,258 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:28:46,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:28:46,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:28:46,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:28:46,262 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:28:46,262 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:28:46,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:28:46,263 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:28:46,263 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:28:46,264 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:28:46,264 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:28:46,264 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ede09850ec25b369afc0cd16258beff942f9fc7c5304532be31fd5925a934e14 [2024-10-13 09:28:46,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:28:46,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:28:46,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:28:46,545 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:28:46,545 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:28:46,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/02_inc_cas.i [2024-10-13 09:28:47,992 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:28:48,252 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:28:48,253 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/02_inc_cas.i [2024-10-13 09:28:48,272 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/871662be3/98dc99ec5c2d4e37a64a37469266d7bf/FLAG4ff637e9d [2024-10-13 09:28:48,555 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/871662be3/98dc99ec5c2d4e37a64a37469266d7bf [2024-10-13 09:28:48,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:28:48,559 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:28:48,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:28:48,562 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:28:48,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:28:48,568 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:28:48" (1/1) ... [2024-10-13 09:28:48,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d35d825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:48, skipping insertion in model container [2024-10-13 09:28:48,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:28:48" (1/1) ... [2024-10-13 09:28:48,624 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:28:48,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:28:48,960 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:28:49,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:28:49,109 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:28:49,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:49 WrapperNode [2024-10-13 09:28:49,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:28:49,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:28:49,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:28:49,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:28:49,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:49" (1/1) ... [2024-10-13 09:28:49,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:49" (1/1) ... [2024-10-13 09:28:49,179 INFO L138 Inliner]: procedures = 170, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2024-10-13 09:28:49,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:28:49,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:28:49,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:28:49,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:28:49,189 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:49" (1/1) ... [2024-10-13 09:28:49,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:49" (1/1) ... [2024-10-13 09:28:49,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:49" (1/1) ... [2024-10-13 09:28:49,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:49" (1/1) ... [2024-10-13 09:28:49,205 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:49" (1/1) ... [2024-10-13 09:28:49,209 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:49" (1/1) ... [2024-10-13 09:28:49,211 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:49" (1/1) ... [2024-10-13 09:28:49,212 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:49" (1/1) ... [2024-10-13 09:28:49,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:28:49,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:28:49,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:28:49,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:28:49,220 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:49" (1/1) ... [2024-10-13 09:28:49,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:28:49,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:28:49,257 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) [2024-10-13 09:28:49,261 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 [2024-10-13 09:28:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-13 09:28:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-13 09:28:49,312 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-13 09:28:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-13 09:28:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 09:28:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:28:49,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 09:28:49,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 09:28:49,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-13 09:28:49,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 09:28:49,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:28:49,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:28:49,315 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 09:28:49,429 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:28:49,431 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:28:49,699 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 09:28:49,699 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:28:49,903 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:28:49,903 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-13 09:28:49,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:28:49 BoogieIcfgContainer [2024-10-13 09:28:49,904 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:28:49,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:28:49,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:28:49,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:28:49,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:28:48" (1/3) ... [2024-10-13 09:28:49,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31603e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:28:49, skipping insertion in model container [2024-10-13 09:28:49,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:28:49" (2/3) ... [2024-10-13 09:28:49,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31603e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:28:49, skipping insertion in model container [2024-10-13 09:28:49,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:28:49" (3/3) ... [2024-10-13 09:28:49,912 INFO L112 eAbstractionObserver]: Analyzing ICFG 02_inc_cas.i [2024-10-13 09:28:49,929 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:28:49,930 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-13 09:28:49,930 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 09:28:49,996 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:28:50,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 60 transitions, 124 flow [2024-10-13 09:28:50,078 INFO L124 PetriNetUnfolderBase]: 5/69 cut-off events. [2024-10-13 09:28:50,079 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:28:50,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 69 events. 5/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 124 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 46. Up to 4 conditions per place. [2024-10-13 09:28:50,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 60 transitions, 124 flow [2024-10-13 09:28:50,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 60 transitions, 124 flow [2024-10-13 09:28:50,105 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:28:50,115 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;@39bd64c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:28:50,116 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-10-13 09:28:50,129 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:28:50,130 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-13 09:28:50,130 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:28:50,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:28:50,131 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] [2024-10-13 09:28:50,132 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2024-10-13 09:28:50,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:28:50,138 INFO L85 PathProgramCache]: Analyzing trace with hash -756387135, now seen corresponding path program 1 times [2024-10-13 09:28:50,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:28:50,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539829023] [2024-10-13 09:28:50,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:28:50,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:28:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:28:50,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:28:50,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:28:50,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539829023] [2024-10-13 09:28:50,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539829023] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:28:50,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:28:50,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:28:50,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076925689] [2024-10-13 09:28:50,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:28:50,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:28:50,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:28:50,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:28:50,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:28:50,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 60 [2024-10-13 09:28:50,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 124 flow. Second operand has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 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) [2024-10-13 09:28:50,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:28:50,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 60 [2024-10-13 09:28:50,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:28:50,810 INFO L124 PetriNetUnfolderBase]: 2/52 cut-off events. [2024-10-13 09:28:50,811 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:28:50,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 52 events. 2/52 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 5/54 useless extension candidates. Maximal degree in co-relation 37. Up to 5 conditions per place. [2024-10-13 09:28:50,812 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 4 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2024-10-13 09:28:50,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 108 flow [2024-10-13 09:28:50,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:28:50,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:28:50,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 107 transitions. [2024-10-13 09:28:50,823 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8916666666666667 [2024-10-13 09:28:50,825 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 124 flow. Second operand 2 states and 107 transitions. [2024-10-13 09:28:50,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 108 flow [2024-10-13 09:28:50,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:28:50,829 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 100 flow [2024-10-13 09:28:50,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2024-10-13 09:28:50,835 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -9 predicate places. [2024-10-13 09:28:50,835 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 100 flow [2024-10-13 09:28:50,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 48.0) internal successors, (96), 2 states have internal predecessors, (96), 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) [2024-10-13 09:28:50,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:28:50,836 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:28:50,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:28:50,837 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2024-10-13 09:28:50,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:28:50,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1903092179, now seen corresponding path program 1 times [2024-10-13 09:28:50,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:28:50,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354540153] [2024-10-13 09:28:50,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:28:50,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:28:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:28:50,850 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:28:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:28:50,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:28:50,890 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:28:50,892 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-10-13 09:28:50,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2024-10-13 09:28:50,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2024-10-13 09:28:50,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2024-10-13 09:28:50,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2024-10-13 09:28:50,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2024-10-13 09:28:50,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2024-10-13 09:28:50,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2024-10-13 09:28:50,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2024-10-13 09:28:50,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2024-10-13 09:28:50,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2024-10-13 09:28:50,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2024-10-13 09:28:50,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2024-10-13 09:28:50,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2024-10-13 09:28:50,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2024-10-13 09:28:50,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:28:50,899 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-13 09:28:50,902 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:28:50,902 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 09:28:50,971 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:28:50,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 96 transitions, 202 flow [2024-10-13 09:28:51,022 INFO L124 PetriNetUnfolderBase]: 9/116 cut-off events. [2024-10-13 09:28:51,023 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 09:28:51,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 116 events. 9/116 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 326 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 81. Up to 6 conditions per place. [2024-10-13 09:28:51,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 96 transitions, 202 flow [2024-10-13 09:28:51,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 96 transitions, 202 flow [2024-10-13 09:28:51,031 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:28:51,033 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;@39bd64c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:28:51,033 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-13 09:28:51,039 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:28:51,042 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-13 09:28:51,042 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:28:51,042 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:28:51,042 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] [2024-10-13 09:28:51,043 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-13 09:28:51,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:28:51,044 INFO L85 PathProgramCache]: Analyzing trace with hash -32687135, now seen corresponding path program 1 times [2024-10-13 09:28:51,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:28:51,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174555475] [2024-10-13 09:28:51,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:28:51,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:28:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:28:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:28:51,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:28:51,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174555475] [2024-10-13 09:28:51,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174555475] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:28:51,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:28:51,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:28:51,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848385271] [2024-10-13 09:28:51,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:28:51,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:28:51,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:28:51,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:28:51,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:28:51,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 96 [2024-10-13 09:28:51,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 202 flow. Second operand has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 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) [2024-10-13 09:28:51,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:28:51,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 96 [2024-10-13 09:28:51,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:28:51,337 INFO L124 PetriNetUnfolderBase]: 24/199 cut-off events. [2024-10-13 09:28:51,338 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-13 09:28:51,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 199 events. 24/199 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 694 event pairs, 12 based on Foata normal form. 21/199 useless extension candidates. Maximal degree in co-relation 175. Up to 37 conditions per place. [2024-10-13 09:28:51,343 INFO L140 encePairwiseOnDemand]: 80/96 looper letters, 8 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2024-10-13 09:28:51,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 180 flow [2024-10-13 09:28:51,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:28:51,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:28:51,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 168 transitions. [2024-10-13 09:28:51,346 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.875 [2024-10-13 09:28:51,346 INFO L175 Difference]: Start difference. First operand has 94 places, 96 transitions, 202 flow. Second operand 2 states and 168 transitions. [2024-10-13 09:28:51,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 180 flow [2024-10-13 09:28:51,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 77 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:28:51,350 INFO L231 Difference]: Finished difference. Result has 79 places, 77 transitions, 164 flow [2024-10-13 09:28:51,351 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=164, PETRI_PLACES=79, PETRI_TRANSITIONS=77} [2024-10-13 09:28:51,352 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -15 predicate places. [2024-10-13 09:28:51,352 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 77 transitions, 164 flow [2024-10-13 09:28:51,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 73.0) internal successors, (146), 2 states have internal predecessors, (146), 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) [2024-10-13 09:28:51,353 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:28:51,353 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:28:51,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 09:28:51,353 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-13 09:28:51,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:28:51,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1923281428, now seen corresponding path program 1 times [2024-10-13 09:28:51,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:28:51,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183633394] [2024-10-13 09:28:51,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:28:51,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:28:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:28:51,371 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:28:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:28:51,384 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:28:51,385 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:28:51,385 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-10-13 09:28:51,385 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-10-13 09:28:51,386 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-10-13 09:28:51,387 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-10-13 09:28:51,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-10-13 09:28:51,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-10-13 09:28:51,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-10-13 09:28:51,388 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-10-13 09:28:51,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-10-13 09:28:51,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-10-13 09:28:51,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-10-13 09:28:51,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-10-13 09:28:51,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-10-13 09:28:51,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-10-13 09:28:51,389 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-10-13 09:28:51,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-10-13 09:28:51,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-10-13 09:28:51,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-10-13 09:28:51,394 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-10-13 09:28:51,395 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-10-13 09:28:51,395 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-10-13 09:28:51,395 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-10-13 09:28:51,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 09:28:51,395 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-13 09:28:51,396 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:28:51,396 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 09:28:51,499 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:28:51,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 132 transitions, 282 flow [2024-10-13 09:28:51,530 INFO L124 PetriNetUnfolderBase]: 13/163 cut-off events. [2024-10-13 09:28:51,531 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 09:28:51,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 163 events. 13/163 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 504 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 120. Up to 8 conditions per place. [2024-10-13 09:28:51,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 132 transitions, 282 flow [2024-10-13 09:28:51,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 129 places, 132 transitions, 282 flow [2024-10-13 09:28:51,539 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:28:51,540 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;@39bd64c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:28:51,541 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-13 09:28:51,545 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:28:51,548 INFO L124 PetriNetUnfolderBase]: 2/36 cut-off events. [2024-10-13 09:28:51,548 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:28:51,549 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:28:51,549 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] [2024-10-13 09:28:51,549 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-13 09:28:51,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:28:51,549 INFO L85 PathProgramCache]: Analyzing trace with hash -2143637730, now seen corresponding path program 1 times [2024-10-13 09:28:51,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:28:51,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606041978] [2024-10-13 09:28:51,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:28:51,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:28:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:28:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:28:51,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:28:51,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606041978] [2024-10-13 09:28:51,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606041978] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:28:51,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:28:51,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:28:51,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979889619] [2024-10-13 09:28:51,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:28:51,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:28:51,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:28:51,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:28:51,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:28:51,669 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 132 [2024-10-13 09:28:51,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 132 transitions, 282 flow. Second operand has 2 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 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) [2024-10-13 09:28:51,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:28:51,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 132 [2024-10-13 09:28:51,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:28:51,925 INFO L124 PetriNetUnfolderBase]: 174/842 cut-off events. [2024-10-13 09:28:51,925 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-10-13 09:28:51,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 842 events. 174/842 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5403 event pairs, 108 based on Foata normal form. 85/821 useless extension candidates. Maximal degree in co-relation 811. Up to 229 conditions per place. [2024-10-13 09:28:51,961 INFO L140 encePairwiseOnDemand]: 109/132 looper letters, 12 selfloop transitions, 0 changer transitions 0/106 dead transitions. [2024-10-13 09:28:51,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 254 flow [2024-10-13 09:28:51,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:28:51,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:28:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 229 transitions. [2024-10-13 09:28:51,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8674242424242424 [2024-10-13 09:28:51,965 INFO L175 Difference]: Start difference. First operand has 129 places, 132 transitions, 282 flow. Second operand 2 states and 229 transitions. [2024-10-13 09:28:51,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 254 flow [2024-10-13 09:28:51,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 252 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-13 09:28:51,969 INFO L231 Difference]: Finished difference. Result has 108 places, 106 transitions, 228 flow [2024-10-13 09:28:51,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=228, PETRI_PLACES=108, PETRI_TRANSITIONS=106} [2024-10-13 09:28:51,970 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, -21 predicate places. [2024-10-13 09:28:51,970 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 106 transitions, 228 flow [2024-10-13 09:28:51,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 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) [2024-10-13 09:28:51,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:28:51,971 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] [2024-10-13 09:28:51,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 09:28:51,971 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-13 09:28:51,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:28:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1801324742, now seen corresponding path program 1 times [2024-10-13 09:28:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:28:51,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383237271] [2024-10-13 09:28:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:28:51,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:28:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:28:52,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:28:52,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:28:52,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383237271] [2024-10-13 09:28:52,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383237271] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:28:52,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:28:52,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:28:52,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450922012] [2024-10-13 09:28:52,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:28:52,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:28:52,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:28:52,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:28:52,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:28:52,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 132 [2024-10-13 09:28:52,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 106 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 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) [2024-10-13 09:28:52,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:28:52,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 132 [2024-10-13 09:28:52,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:28:53,765 INFO L124 PetriNetUnfolderBase]: 805/2681 cut-off events. [2024-10-13 09:28:53,765 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2024-10-13 09:28:53,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4055 conditions, 2681 events. 805/2681 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 23374 event pairs, 235 based on Foata normal form. 0/2371 useless extension candidates. Maximal degree in co-relation 4049. Up to 770 conditions per place. [2024-10-13 09:28:53,793 INFO L140 encePairwiseOnDemand]: 121/132 looper letters, 46 selfloop transitions, 16 changer transitions 0/147 dead transitions. [2024-10-13 09:28:53,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 147 transitions, 474 flow [2024-10-13 09:28:53,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:28:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:28:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 591 transitions. [2024-10-13 09:28:53,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7462121212121212 [2024-10-13 09:28:53,798 INFO L175 Difference]: Start difference. First operand has 108 places, 106 transitions, 228 flow. Second operand 6 states and 591 transitions. [2024-10-13 09:28:53,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 147 transitions, 474 flow [2024-10-13 09:28:53,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 147 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:28:53,807 INFO L231 Difference]: Finished difference. Result has 118 places, 121 transitions, 342 flow [2024-10-13 09:28:53,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=132, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=118, PETRI_TRANSITIONS=121} [2024-10-13 09:28:53,809 INFO L277 CegarLoopForPetriNet]: 129 programPoint places, -11 predicate places. [2024-10-13 09:28:53,810 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 121 transitions, 342 flow [2024-10-13 09:28:53,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.5) internal successors, (537), 6 states have internal predecessors, (537), 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) [2024-10-13 09:28:53,811 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:28:53,811 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:28:53,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 09:28:53,811 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-13 09:28:53,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:28:53,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1362698766, now seen corresponding path program 1 times [2024-10-13 09:28:53,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:28:53,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559601825] [2024-10-13 09:28:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:28:53,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:28:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:28:53,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:28:53,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:28:53,843 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:28:53,845 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:28:53,845 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2024-10-13 09:28:53,847 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2024-10-13 09:28:53,848 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2024-10-13 09:28:53,848 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2024-10-13 09:28:53,848 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2024-10-13 09:28:53,848 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2024-10-13 09:28:53,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2024-10-13 09:28:53,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2024-10-13 09:28:53,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2024-10-13 09:28:53,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2024-10-13 09:28:53,849 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2024-10-13 09:28:53,850 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2024-10-13 09:28:53,850 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2024-10-13 09:28:53,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2024-10-13 09:28:53,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2024-10-13 09:28:53,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2024-10-13 09:28:53,851 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2024-10-13 09:28:53,852 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2024-10-13 09:28:53,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2024-10-13 09:28:53,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2024-10-13 09:28:53,853 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2024-10-13 09:28:53,854 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2024-10-13 09:28:53,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2024-10-13 09:28:53,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2024-10-13 09:28:53,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2024-10-13 09:28:53,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2024-10-13 09:28:53,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2024-10-13 09:28:53,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2024-10-13 09:28:53,858 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2024-10-13 09:28:53,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:28:53,858 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-13 09:28:53,859 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:28:53,859 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-13 09:28:53,947 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:28:53,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 168 transitions, 364 flow [2024-10-13 09:28:53,984 INFO L124 PetriNetUnfolderBase]: 17/210 cut-off events. [2024-10-13 09:28:53,985 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-13 09:28:53,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 210 events. 17/210 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 703 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 171. Up to 10 conditions per place. [2024-10-13 09:28:53,988 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 168 transitions, 364 flow [2024-10-13 09:28:53,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 168 transitions, 364 flow [2024-10-13 09:28:53,992 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:28:53,994 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;@39bd64c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:28:53,994 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-10-13 09:28:53,997 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:28:53,997 INFO L124 PetriNetUnfolderBase]: 2/36 cut-off events. [2024-10-13 09:28:53,997 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:28:53,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:28:53,998 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] [2024-10-13 09:28:53,998 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-10-13 09:28:53,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:28:53,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1567497022, now seen corresponding path program 1 times [2024-10-13 09:28:53,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:28:53,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002845556] [2024-10-13 09:28:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:28:53,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:28:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:28:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:28:54,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:28:54,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002845556] [2024-10-13 09:28:54,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002845556] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:28:54,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:28:54,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:28:54,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748867149] [2024-10-13 09:28:54,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:28:54,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:28:54,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:28:54,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:28:54,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:28:54,096 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 168 [2024-10-13 09:28:54,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 168 transitions, 364 flow. Second operand has 2 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 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) [2024-10-13 09:28:54,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:28:54,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 168 [2024-10-13 09:28:54,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:28:54,872 INFO L124 PetriNetUnfolderBase]: 1028/3661 cut-off events. [2024-10-13 09:28:54,872 INFO L125 PetriNetUnfolderBase]: For 755/755 co-relation queries the response was YES. [2024-10-13 09:28:54,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5317 conditions, 3661 events. 1028/3661 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 32375 event pairs, 684 based on Foata normal form. 341/3544 useless extension candidates. Maximal degree in co-relation 3727. Up to 1253 conditions per place. [2024-10-13 09:28:54,914 INFO L140 encePairwiseOnDemand]: 138/168 looper letters, 16 selfloop transitions, 0 changer transitions 0/135 dead transitions. [2024-10-13 09:28:54,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 135 transitions, 330 flow [2024-10-13 09:28:54,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:28:54,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:28:54,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 290 transitions. [2024-10-13 09:28:54,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8630952380952381 [2024-10-13 09:28:54,917 INFO L175 Difference]: Start difference. First operand has 164 places, 168 transitions, 364 flow. Second operand 2 states and 290 transitions. [2024-10-13 09:28:54,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 135 transitions, 330 flow [2024-10-13 09:28:54,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 135 transitions, 324 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-13 09:28:54,921 INFO L231 Difference]: Finished difference. Result has 137 places, 135 transitions, 292 flow [2024-10-13 09:28:54,921 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=292, PETRI_PLACES=137, PETRI_TRANSITIONS=135} [2024-10-13 09:28:54,921 INFO L277 CegarLoopForPetriNet]: 164 programPoint places, -27 predicate places. [2024-10-13 09:28:54,922 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 135 transitions, 292 flow [2024-10-13 09:28:54,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 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) [2024-10-13 09:28:54,922 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:28:54,922 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] [2024-10-13 09:28:54,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 09:28:54,922 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-10-13 09:28:54,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:28:54,923 INFO L85 PathProgramCache]: Analyzing trace with hash -2033607695, now seen corresponding path program 1 times [2024-10-13 09:28:54,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:28:54,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420075483] [2024-10-13 09:28:54,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:28:54,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:28:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:28:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:28:55,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:28:55,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420075483] [2024-10-13 09:28:55,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420075483] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:28:55,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:28:55,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:28:55,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420588416] [2024-10-13 09:28:55,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:28:55,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:28:55,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:28:55,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:28:55,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:28:55,391 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 168 [2024-10-13 09:28:55,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 135 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 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) [2024-10-13 09:28:55,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:28:55,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 168 [2024-10-13 09:28:55,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:28:58,709 INFO L124 PetriNetUnfolderBase]: 4956/13322 cut-off events. [2024-10-13 09:28:58,709 INFO L125 PetriNetUnfolderBase]: For 1141/1141 co-relation queries the response was YES. [2024-10-13 09:28:58,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20720 conditions, 13322 events. 4956/13322 cut-off events. For 1141/1141 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 141069 event pairs, 1678 based on Foata normal form. 0/11793 useless extension candidates. Maximal degree in co-relation 20713. Up to 4383 conditions per place. [2024-10-13 09:28:58,903 INFO L140 encePairwiseOnDemand]: 156/168 looper letters, 62 selfloop transitions, 20 changer transitions 0/192 dead transitions. [2024-10-13 09:28:58,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 192 transitions, 630 flow [2024-10-13 09:28:58,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:28:58,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:28:58,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 761 transitions. [2024-10-13 09:28:58,907 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7549603174603174 [2024-10-13 09:28:58,908 INFO L175 Difference]: Start difference. First operand has 137 places, 135 transitions, 292 flow. Second operand 6 states and 761 transitions. [2024-10-13 09:28:58,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 192 transitions, 630 flow [2024-10-13 09:28:58,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 192 transitions, 630 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:28:58,913 INFO L231 Difference]: Finished difference. Result has 147 places, 154 transitions, 432 flow [2024-10-13 09:28:58,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=432, PETRI_PLACES=147, PETRI_TRANSITIONS=154} [2024-10-13 09:28:58,914 INFO L277 CegarLoopForPetriNet]: 164 programPoint places, -17 predicate places. [2024-10-13 09:28:58,914 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 154 transitions, 432 flow [2024-10-13 09:28:58,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 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) [2024-10-13 09:28:58,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:28:58,915 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-13 09:28:58,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 09:28:58,916 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-10-13 09:28:58,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:28:58,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1183191110, now seen corresponding path program 1 times [2024-10-13 09:28:58,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:28:58,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483648496] [2024-10-13 09:28:58,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:28:58,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:28:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:28:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:28:59,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:28:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483648496] [2024-10-13 09:28:59,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483648496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:28:59,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:28:59,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:28:59,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833615594] [2024-10-13 09:28:59,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:28:59,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:28:59,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:28:59,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:28:59,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:28:59,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 168 [2024-10-13 09:28:59,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 154 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 114.66666666666667) internal successors, (688), 6 states have internal predecessors, (688), 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) [2024-10-13 09:28:59,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:28:59,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 168 [2024-10-13 09:28:59,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:05,423 INFO L124 PetriNetUnfolderBase]: 13786/35470 cut-off events. [2024-10-13 09:29:05,424 INFO L125 PetriNetUnfolderBase]: For 11514/12373 co-relation queries the response was YES. [2024-10-13 09:29:05,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63661 conditions, 35470 events. 13786/35470 cut-off events. For 11514/12373 co-relation queries the response was YES. Maximal size of possible extension queue 1515. Compared 431684 event pairs, 3668 based on Foata normal form. 0/31702 useless extension candidates. Maximal degree in co-relation 63649. Up to 12132 conditions per place. [2024-10-13 09:29:05,863 INFO L140 encePairwiseOnDemand]: 156/168 looper letters, 71 selfloop transitions, 60 changer transitions 0/247 dead transitions. [2024-10-13 09:29:05,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 247 transitions, 1106 flow [2024-10-13 09:29:05,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:29:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:29:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 757 transitions. [2024-10-13 09:29:05,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7509920634920635 [2024-10-13 09:29:05,867 INFO L175 Difference]: Start difference. First operand has 147 places, 154 transitions, 432 flow. Second operand 6 states and 757 transitions. [2024-10-13 09:29:05,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 247 transitions, 1106 flow [2024-10-13 09:29:05,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 247 transitions, 1106 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:29:05,890 INFO L231 Difference]: Finished difference. Result has 157 places, 213 transitions, 1024 flow [2024-10-13 09:29:05,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1024, PETRI_PLACES=157, PETRI_TRANSITIONS=213} [2024-10-13 09:29:05,891 INFO L277 CegarLoopForPetriNet]: 164 programPoint places, -7 predicate places. [2024-10-13 09:29:05,891 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 213 transitions, 1024 flow [2024-10-13 09:29:05,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.66666666666667) internal successors, (688), 6 states have internal predecessors, (688), 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) [2024-10-13 09:29:05,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:05,892 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:29:05,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 09:29:05,893 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2024-10-13 09:29:05,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:05,893 INFO L85 PathProgramCache]: Analyzing trace with hash 275955197, now seen corresponding path program 1 times [2024-10-13 09:29:05,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:05,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855623747] [2024-10-13 09:29:05,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:05,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:29:05,913 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:29:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:29:05,928 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:29:05,928 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:29:05,929 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (35 of 36 remaining) [2024-10-13 09:29:05,929 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2024-10-13 09:29:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2024-10-13 09:29:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2024-10-13 09:29:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2024-10-13 09:29:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2024-10-13 09:29:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2024-10-13 09:29:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (28 of 36 remaining) [2024-10-13 09:29:05,930 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2024-10-13 09:29:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2024-10-13 09:29:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2024-10-13 09:29:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2024-10-13 09:29:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2024-10-13 09:29:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2024-10-13 09:29:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2024-10-13 09:29:05,931 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 36 remaining) [2024-10-13 09:29:05,933 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2024-10-13 09:29:05,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2024-10-13 09:29:05,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2024-10-13 09:29:05,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 36 remaining) [2024-10-13 09:29:05,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 36 remaining) [2024-10-13 09:29:05,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2024-10-13 09:29:05,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2024-10-13 09:29:05,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2024-10-13 09:29:05,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2024-10-13 09:29:05,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2024-10-13 09:29:05,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 36 remaining) [2024-10-13 09:29:05,934 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2024-10-13 09:29:05,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2024-10-13 09:29:05,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2024-10-13 09:29:05,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2024-10-13 09:29:05,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2024-10-13 09:29:05,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2024-10-13 09:29:05,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2024-10-13 09:29:05,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 36 remaining) [2024-10-13 09:29:05,935 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2024-10-13 09:29:05,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 09:29:05,935 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-13 09:29:05,936 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:29:05,936 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-13 09:29:06,036 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:29:06,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 204 transitions, 448 flow [2024-10-13 09:29:06,073 INFO L124 PetriNetUnfolderBase]: 21/257 cut-off events. [2024-10-13 09:29:06,073 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-13 09:29:06,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 257 events. 21/257 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 888 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 223. Up to 12 conditions per place. [2024-10-13 09:29:06,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 204 transitions, 448 flow [2024-10-13 09:29:06,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 204 transitions, 448 flow [2024-10-13 09:29:06,083 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:29:06,083 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;@39bd64c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:29:06,083 INFO L334 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2024-10-13 09:29:06,086 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:29:06,086 INFO L124 PetriNetUnfolderBase]: 2/34 cut-off events. [2024-10-13 09:29:06,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:29:06,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:06,086 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] [2024-10-13 09:29:06,087 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2024-10-13 09:29:06,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:06,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1884386792, now seen corresponding path program 1 times [2024-10-13 09:29:06,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:06,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723749143] [2024-10-13 09:29:06,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:06,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:29:06,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:06,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723749143] [2024-10-13 09:29:06,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723749143] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:06,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:29:06,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-13 09:29:06,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59719626] [2024-10-13 09:29:06,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:06,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-13 09:29:06,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:06,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-13 09:29:06,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-13 09:29:06,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 204 [2024-10-13 09:29:06,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 204 transitions, 448 flow. Second operand has 2 states, 2 states have (on average 148.0) internal successors, (296), 2 states have internal predecessors, (296), 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) [2024-10-13 09:29:06,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:06,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 204 [2024-10-13 09:29:06,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:08,756 INFO L124 PetriNetUnfolderBase]: 5466/15952 cut-off events. [2024-10-13 09:29:08,756 INFO L125 PetriNetUnfolderBase]: For 4599/4599 co-relation queries the response was YES. [2024-10-13 09:29:08,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24265 conditions, 15952 events. 5466/15952 cut-off events. For 4599/4599 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 172017 event pairs, 3756 based on Foata normal form. 1365/15440 useless extension candidates. Maximal degree in co-relation 16915. Up to 6373 conditions per place. [2024-10-13 09:29:09,000 INFO L140 encePairwiseOnDemand]: 167/204 looper letters, 20 selfloop transitions, 0 changer transitions 0/164 dead transitions. [2024-10-13 09:29:09,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 164 transitions, 408 flow [2024-10-13 09:29:09,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-13 09:29:09,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-13 09:29:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 351 transitions. [2024-10-13 09:29:09,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8602941176470589 [2024-10-13 09:29:09,002 INFO L175 Difference]: Start difference. First operand has 199 places, 204 transitions, 448 flow. Second operand 2 states and 351 transitions. [2024-10-13 09:29:09,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 164 transitions, 408 flow [2024-10-13 09:29:09,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 164 transitions, 396 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-13 09:29:09,009 INFO L231 Difference]: Finished difference. Result has 166 places, 164 transitions, 356 flow [2024-10-13 09:29:09,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=356, PETRI_PLACES=166, PETRI_TRANSITIONS=164} [2024-10-13 09:29:09,010 INFO L277 CegarLoopForPetriNet]: 199 programPoint places, -33 predicate places. [2024-10-13 09:29:09,011 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 164 transitions, 356 flow [2024-10-13 09:29:09,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 148.0) internal successors, (296), 2 states have internal predecessors, (296), 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) [2024-10-13 09:29:09,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:09,012 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] [2024-10-13 09:29:09,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 09:29:09,012 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2024-10-13 09:29:09,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:09,013 INFO L85 PathProgramCache]: Analyzing trace with hash -58708352, now seen corresponding path program 1 times [2024-10-13 09:29:09,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:09,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354479752] [2024-10-13 09:29:09,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:09,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:29:09,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:09,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354479752] [2024-10-13 09:29:09,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354479752] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:09,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:29:09,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:29:09,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748761372] [2024-10-13 09:29:09,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:09,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:29:09,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:09,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:29:09,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:29:09,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 204 [2024-10-13 09:29:09,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:09,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:09,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 204 [2024-10-13 09:29:09,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:20,724 INFO L124 PetriNetUnfolderBase]: 26524/61220 cut-off events. [2024-10-13 09:29:20,724 INFO L125 PetriNetUnfolderBase]: For 4772/4772 co-relation queries the response was YES. [2024-10-13 09:29:21,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97739 conditions, 61220 events. 26524/61220 cut-off events. For 4772/4772 co-relation queries the response was YES. Maximal size of possible extension queue 2172. Compared 727284 event pairs, 9749 based on Foata normal form. 0/54619 useless extension candidates. Maximal degree in co-relation 97731. Up to 22453 conditions per place. [2024-10-13 09:29:21,750 INFO L140 encePairwiseOnDemand]: 191/204 looper letters, 78 selfloop transitions, 24 changer transitions 0/237 dead transitions. [2024-10-13 09:29:21,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 237 transitions, 786 flow [2024-10-13 09:29:21,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:29:21,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:29:21,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 931 transitions. [2024-10-13 09:29:21,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7606209150326797 [2024-10-13 09:29:21,753 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 356 flow. Second operand 6 states and 931 transitions. [2024-10-13 09:29:21,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 237 transitions, 786 flow [2024-10-13 09:29:21,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 237 transitions, 786 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:29:21,760 INFO L231 Difference]: Finished difference. Result has 176 places, 187 transitions, 522 flow [2024-10-13 09:29:21,760 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=522, PETRI_PLACES=176, PETRI_TRANSITIONS=187} [2024-10-13 09:29:21,761 INFO L277 CegarLoopForPetriNet]: 199 programPoint places, -23 predicate places. [2024-10-13 09:29:21,761 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 187 transitions, 522 flow [2024-10-13 09:29:21,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:21,762 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:21,762 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-13 09:29:21,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 09:29:21,762 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err5ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err6ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err4ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2024-10-13 09:29:21,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:21,763 INFO L85 PathProgramCache]: Analyzing trace with hash -158864506, now seen corresponding path program 1 times [2024-10-13 09:29:21,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:21,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103505372] [2024-10-13 09:29:21,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:21,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:29:22,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:22,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103505372] [2024-10-13 09:29:22,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103505372] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:22,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:29:22,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:29:22,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432478798] [2024-10-13 09:29:22,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:22,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:29:22,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:22,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:29:22,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:29:22,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 204 [2024-10-13 09:29:22,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 187 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 139.66666666666666) internal successors, (838), 6 states have internal predecessors, (838), 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) [2024-10-13 09:29:22,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:22,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 204 [2024-10-13 09:29:22,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand