./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/11_fmaxsymopt-pthread-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread-race.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 6eaf53927efa9f712f678ef2cf9690be3fd6ec4bf384d9c1c99a8bc6fe9c4afe --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 16:47:38,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 16:47:38,116 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 16:47:38,120 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 16:47:38,120 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 16:47:38,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 16:47:38,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 16:47:38,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 16:47:38,154 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 16:47:38,155 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 16:47:38,161 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 16:47:38,162 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 16:47:38,163 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 16:47:38,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 16:47:38,164 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 16:47:38,164 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 16:47:38,165 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 16:47:38,165 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 16:47:38,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 16:47:38,165 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 16:47:38,165 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 16:47:38,169 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 16:47:38,169 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 16:47:38,169 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 16:47:38,169 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 16:47:38,169 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 16:47:38,169 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 16:47:38,170 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 16:47:38,170 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 16:47:38,170 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 16:47:38,170 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 16:47:38,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:47:38,170 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 16:47:38,170 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 16:47:38,170 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 16:47:38,171 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 16:47:38,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 16:47:38,171 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 16:47:38,171 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 16:47:38,171 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 16:47:38,171 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 16:47:38,173 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6eaf53927efa9f712f678ef2cf9690be3fd6ec4bf384d9c1c99a8bc6fe9c4afe [2024-10-11 16:47:38,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 16:47:38,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 16:47:38,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 16:47:38,377 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 16:47:38,378 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 16:47:38,378 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread-race.i [2024-10-11 16:47:39,692 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 16:47:39,918 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 16:47:39,922 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread-race.i [2024-10-11 16:47:39,935 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/dbf0dbf6a/60ef508b0c0946098bb8f07576c2629a/FLAG709fb4442 [2024-10-11 16:47:39,949 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/dbf0dbf6a/60ef508b0c0946098bb8f07576c2629a [2024-10-11 16:47:39,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 16:47:39,953 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 16:47:39,954 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 16:47:39,954 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 16:47:39,960 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 16:47:39,961 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:47:39" (1/1) ... [2024-10-11 16:47:39,962 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498122fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:39, skipping insertion in model container [2024-10-11 16:47:39,962 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:47:39" (1/1) ... [2024-10-11 16:47:39,999 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 16:47:40,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:47:40,296 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 16:47:40,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 16:47:40,372 INFO L204 MainTranslator]: Completed translation [2024-10-11 16:47:40,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:40 WrapperNode [2024-10-11 16:47:40,373 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 16:47:40,374 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 16:47:40,374 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 16:47:40,374 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 16:47:40,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:40" (1/1) ... [2024-10-11 16:47:40,388 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:40" (1/1) ... [2024-10-11 16:47:40,418 INFO L138 Inliner]: procedures = 164, calls = 27, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 111 [2024-10-11 16:47:40,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 16:47:40,419 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 16:47:40,419 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 16:47:40,420 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 16:47:40,430 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:40" (1/1) ... [2024-10-11 16:47:40,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:40" (1/1) ... [2024-10-11 16:47:40,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:40" (1/1) ... [2024-10-11 16:47:40,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:40" (1/1) ... [2024-10-11 16:47:40,437 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:40" (1/1) ... [2024-10-11 16:47:40,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:40" (1/1) ... [2024-10-11 16:47:40,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:40" (1/1) ... [2024-10-11 16:47:40,441 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:40" (1/1) ... [2024-10-11 16:47:40,443 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 16:47:40,444 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 16:47:40,444 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 16:47:40,444 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 16:47:40,445 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:40" (1/1) ... [2024-10-11 16:47:40,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 16:47:40,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:40,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 16:47:40,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 16:47:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-11 16:47:40,559 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-11 16:47:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-11 16:47:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-11 16:47:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 16:47:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 16:47:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-11 16:47:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 16:47:40,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 16:47:40,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 16:47:40,561 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 16:47:40,666 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 16:47:40,667 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 16:47:40,850 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 16:47:40,851 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 16:47:40,875 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 16:47:40,875 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-11 16:47:40,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:47:40 BoogieIcfgContainer [2024-10-11 16:47:40,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 16:47:40,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 16:47:40,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 16:47:40,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 16:47:40,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:47:39" (1/3) ... [2024-10-11 16:47:40,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc6f777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:47:40, skipping insertion in model container [2024-10-11 16:47:40,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:47:40" (2/3) ... [2024-10-11 16:47:40,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fc6f777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:47:40, skipping insertion in model container [2024-10-11 16:47:40,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:47:40" (3/3) ... [2024-10-11 16:47:40,884 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-pthread-race.i [2024-10-11 16:47:40,896 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 16:47:40,897 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-10-11 16:47:40,897 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 16:47:40,949 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:47:40,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 126 transitions, 256 flow [2024-10-11 16:47:41,037 INFO L124 PetriNetUnfolderBase]: 12/135 cut-off events. [2024-10-11 16:47:41,038 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:47:41,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 135 events. 12/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 187 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2024-10-11 16:47:41,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 126 transitions, 256 flow [2024-10-11 16:47:41,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 126 transitions, 256 flow [2024-10-11 16:47:41,059 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:47:41,066 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;@6a69c39e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:47:41,067 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-11 16:47:41,084 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:47:41,084 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-11 16:47:41,084 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:47:41,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:41,085 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:41,086 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-11 16:47:41,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:41,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1413890492, now seen corresponding path program 1 times [2024-10-11 16:47:41,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:41,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542125742] [2024-10-11 16:47:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:41,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:41,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:41,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:47:41,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:41,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542125742] [2024-10-11 16:47:41,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542125742] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:41,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:41,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:47:41,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097924184] [2024-10-11 16:47:41,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:41,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:47:41,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:41,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:47:41,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:47:41,985 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 126 [2024-10-11 16:47:41,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 126 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 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) [2024-10-11 16:47:41,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:41,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 126 [2024-10-11 16:47:41,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:42,039 INFO L124 PetriNetUnfolderBase]: 5/117 cut-off events. [2024-10-11 16:47:42,042 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 16:47:42,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 117 events. 5/117 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 0 based on Foata normal form. 13/119 useless extension candidates. Maximal degree in co-relation 76. Up to 14 conditions per place. [2024-10-11 16:47:42,044 INFO L140 encePairwiseOnDemand]: 113/126 looper letters, 13 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2024-10-11 16:47:42,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 113 transitions, 266 flow [2024-10-11 16:47:42,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:47:42,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:47:42,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 614 transitions. [2024-10-11 16:47:42,058 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8121693121693122 [2024-10-11 16:47:42,060 INFO L175 Difference]: Start difference. First operand has 118 places, 126 transitions, 256 flow. Second operand 6 states and 614 transitions. [2024-10-11 16:47:42,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 113 transitions, 266 flow [2024-10-11 16:47:42,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 113 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:47:42,067 INFO L231 Difference]: Finished difference. Result has 116 places, 113 transitions, 240 flow [2024-10-11 16:47:42,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2024-10-11 16:47:42,071 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -2 predicate places. [2024-10-11 16:47:42,071 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 240 flow [2024-10-11 16:47:42,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 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) [2024-10-11 16:47:42,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:42,072 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, 1, 1] [2024-10-11 16:47:42,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 16:47:42,073 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-11 16:47:42,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:42,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1553321828, now seen corresponding path program 1 times [2024-10-11 16:47:42,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:42,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063026599] [2024-10-11 16:47:42,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:42,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:42,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:42,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063026599] [2024-10-11 16:47:42,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063026599] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:42,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:42,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:47:42,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566067842] [2024-10-11 16:47:42,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:42,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:47:42,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:42,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:47:42,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:47:42,148 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 126 [2024-10-11 16:47:42,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-10-11 16:47:42,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:42,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 126 [2024-10-11 16:47:42,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:42,186 INFO L124 PetriNetUnfolderBase]: 5/129 cut-off events. [2024-10-11 16:47:42,187 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 16:47:42,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 129 events. 5/129 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 92. Up to 9 conditions per place. [2024-10-11 16:47:42,187 INFO L140 encePairwiseOnDemand]: 123/126 looper letters, 7 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-10-11 16:47:42,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 114 transitions, 262 flow [2024-10-11 16:47:42,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:47:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:47:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2024-10-11 16:47:42,190 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8915343915343915 [2024-10-11 16:47:42,190 INFO L175 Difference]: Start difference. First operand has 116 places, 113 transitions, 240 flow. Second operand 3 states and 337 transitions. [2024-10-11 16:47:42,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 114 transitions, 262 flow [2024-10-11 16:47:42,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 114 transitions, 250 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 16:47:42,193 INFO L231 Difference]: Finished difference. Result has 114 places, 114 transitions, 242 flow [2024-10-11 16:47:42,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=114, PETRI_TRANSITIONS=114} [2024-10-11 16:47:42,194 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -4 predicate places. [2024-10-11 16:47:42,195 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 114 transitions, 242 flow [2024-10-11 16:47:42,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2024-10-11 16:47:42,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:42,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:42,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 16:47:42,195 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-11 16:47:42,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:42,196 INFO L85 PathProgramCache]: Analyzing trace with hash -582448135, now seen corresponding path program 1 times [2024-10-11 16:47:42,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:42,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981219548] [2024-10-11 16:47:42,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:42,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:42,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:42,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981219548] [2024-10-11 16:47:42,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981219548] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:42,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819614103] [2024-10-11 16:47:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:42,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:42,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:42,279 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:42,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 16:47:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:42,354 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 16:47:42,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:42,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:42,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:42,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819614103] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:42,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:42,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 16:47:42,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006314817] [2024-10-11 16:47:42,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:42,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:47:42,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:42,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:47:42,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:47:42,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 126 [2024-10-11 16:47:42,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 114 transitions, 242 flow. Second operand has 10 states, 10 states have (on average 107.9) internal successors, (1079), 10 states have internal predecessors, (1079), 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) [2024-10-11 16:47:42,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:42,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 126 [2024-10-11 16:47:42,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:42,746 INFO L124 PetriNetUnfolderBase]: 5/144 cut-off events. [2024-10-11 16:47:42,747 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 16:47:42,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 144 events. 5/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 127. Up to 9 conditions per place. [2024-10-11 16:47:42,748 INFO L140 encePairwiseOnDemand]: 120/126 looper letters, 11 selfloop transitions, 9 changer transitions 0/122 dead transitions. [2024-10-11 16:47:42,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 122 transitions, 300 flow [2024-10-11 16:47:42,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 16:47:42,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 16:47:42,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 976 transitions. [2024-10-11 16:47:42,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8606701940035273 [2024-10-11 16:47:42,753 INFO L175 Difference]: Start difference. First operand has 114 places, 114 transitions, 242 flow. Second operand 9 states and 976 transitions. [2024-10-11 16:47:42,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 122 transitions, 300 flow [2024-10-11 16:47:42,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 122 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:42,757 INFO L231 Difference]: Finished difference. Result has 124 places, 120 transitions, 290 flow [2024-10-11 16:47:42,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=290, PETRI_PLACES=124, PETRI_TRANSITIONS=120} [2024-10-11 16:47:42,758 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 6 predicate places. [2024-10-11 16:47:42,758 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 120 transitions, 290 flow [2024-10-11 16:47:42,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.9) internal successors, (1079), 10 states have internal predecessors, (1079), 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) [2024-10-11 16:47:42,759 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:42,760 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:42,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 16:47:42,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:42,961 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-11 16:47:42,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:42,963 INFO L85 PathProgramCache]: Analyzing trace with hash 606994649, now seen corresponding path program 2 times [2024-10-11 16:47:42,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:42,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149169869] [2024-10-11 16:47:42,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:42,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:43,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:43,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149169869] [2024-10-11 16:47:43,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149169869] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:43,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831728987] [2024-10-11 16:47:43,141 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:47:43,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:43,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:43,143 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:43,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 16:47:43,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 16:47:43,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:47:43,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 16:47:43,242 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:43,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:43,400 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 16:47:43,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831728987] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:43,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:43,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 16:47:43,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798209515] [2024-10-11 16:47:43,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:43,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 16:47:43,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:43,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 16:47:43,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 16:47:43,488 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 126 [2024-10-11 16:47:43,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 120 transitions, 290 flow. Second operand has 15 states, 15 states have (on average 108.06666666666666) internal successors, (1621), 15 states have internal predecessors, (1621), 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) [2024-10-11 16:47:43,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:43,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 126 [2024-10-11 16:47:43,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:43,623 INFO L124 PetriNetUnfolderBase]: 5/183 cut-off events. [2024-10-11 16:47:43,623 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-11 16:47:43,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 183 events. 5/183 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 3/176 useless extension candidates. Maximal degree in co-relation 186. Up to 9 conditions per place. [2024-10-11 16:47:43,625 INFO L140 encePairwiseOnDemand]: 120/126 looper letters, 14 selfloop transitions, 18 changer transitions 0/134 dead transitions. [2024-10-11 16:47:43,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 134 transitions, 428 flow [2024-10-11 16:47:43,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 16:47:43,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 16:47:43,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1943 transitions. [2024-10-11 16:47:43,630 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8567019400352733 [2024-10-11 16:47:43,630 INFO L175 Difference]: Start difference. First operand has 124 places, 120 transitions, 290 flow. Second operand 18 states and 1943 transitions. [2024-10-11 16:47:43,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 134 transitions, 428 flow [2024-10-11 16:47:43,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 134 transitions, 416 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:43,634 INFO L231 Difference]: Finished difference. Result has 144 places, 130 transitions, 390 flow [2024-10-11 16:47:43,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=390, PETRI_PLACES=144, PETRI_TRANSITIONS=130} [2024-10-11 16:47:43,636 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 26 predicate places. [2024-10-11 16:47:43,636 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 130 transitions, 390 flow [2024-10-11 16:47:43,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 108.06666666666666) internal successors, (1621), 15 states have internal predecessors, (1621), 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) [2024-10-11 16:47:43,637 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:43,637 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:43,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 16:47:43,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:43,842 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-11 16:47:43,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:43,843 INFO L85 PathProgramCache]: Analyzing trace with hash 870487548, now seen corresponding path program 3 times [2024-10-11 16:47:43,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:43,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260402934] [2024-10-11 16:47:43,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:43,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:43,892 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:47:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:43,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:47:43,939 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:47:43,940 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-11 16:47:43,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-10-11 16:47:43,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-10-11 16:47:43,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-10-11 16:47:43,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-10-11 16:47:43,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-10-11 16:47:43,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-10-11 16:47:43,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-10-11 16:47:43,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-10-11 16:47:43,942 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-10-11 16:47:43,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 16:47:43,943 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-11 16:47:43,945 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:47:43,945 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 16:47:43,966 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:47:43,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 197 transitions, 404 flow [2024-10-11 16:47:43,982 INFO L124 PetriNetUnfolderBase]: 21/217 cut-off events. [2024-10-11 16:47:43,982 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 16:47:43,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 217 events. 21/217 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 504 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 151. Up to 6 conditions per place. [2024-10-11 16:47:43,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 197 transitions, 404 flow [2024-10-11 16:47:43,985 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 197 transitions, 404 flow [2024-10-11 16:47:43,986 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:47:43,987 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;@6a69c39e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:47:43,987 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-11 16:47:43,989 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:47:43,989 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-11 16:47:43,989 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:47:43,990 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:43,990 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:43,990 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 16:47:43,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:43,990 INFO L85 PathProgramCache]: Analyzing trace with hash -525192223, now seen corresponding path program 1 times [2024-10-11 16:47:43,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:43,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550580794] [2024-10-11 16:47:43,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:43,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:47:44,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:44,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550580794] [2024-10-11 16:47:44,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550580794] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:44,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:44,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:47:44,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907662191] [2024-10-11 16:47:44,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:44,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:47:44,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:44,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:47:44,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:47:44,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 197 [2024-10-11 16:47:44,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 197 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 158.5) internal successors, (951), 6 states have internal predecessors, (951), 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) [2024-10-11 16:47:44,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:44,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 197 [2024-10-11 16:47:44,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:44,360 INFO L124 PetriNetUnfolderBase]: 90/606 cut-off events. [2024-10-11 16:47:44,360 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-11 16:47:44,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 606 events. 90/606 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3405 event pairs, 42 based on Foata normal form. 110/620 useless extension candidates. Maximal degree in co-relation 313. Up to 125 conditions per place. [2024-10-11 16:47:44,368 INFO L140 encePairwiseOnDemand]: 180/197 looper letters, 20 selfloop transitions, 5 changer transitions 0/178 dead transitions. [2024-10-11 16:47:44,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 178 transitions, 416 flow [2024-10-11 16:47:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:47:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:47:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 979 transitions. [2024-10-11 16:47:44,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8282571912013537 [2024-10-11 16:47:44,371 INFO L175 Difference]: Start difference. First operand has 183 places, 197 transitions, 404 flow. Second operand 6 states and 979 transitions. [2024-10-11 16:47:44,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 178 transitions, 416 flow [2024-10-11 16:47:44,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 178 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 16:47:44,375 INFO L231 Difference]: Finished difference. Result has 179 places, 178 transitions, 376 flow [2024-10-11 16:47:44,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=376, PETRI_PLACES=179, PETRI_TRANSITIONS=178} [2024-10-11 16:47:44,375 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -4 predicate places. [2024-10-11 16:47:44,376 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 178 transitions, 376 flow [2024-10-11 16:47:44,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 158.5) internal successors, (951), 6 states have internal predecessors, (951), 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) [2024-10-11 16:47:44,377 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:44,377 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:44,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 16:47:44,377 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 16:47:44,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:44,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1573277030, now seen corresponding path program 1 times [2024-10-11 16:47:44,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:44,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127173233] [2024-10-11 16:47:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:44,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:44,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:44,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127173233] [2024-10-11 16:47:44,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127173233] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:44,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:44,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:47:44,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058038798] [2024-10-11 16:47:44,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:44,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:47:44,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:44,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:47:44,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:47:44,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 197 [2024-10-11 16:47:44,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 178 transitions, 376 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2024-10-11 16:47:44,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:44,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 197 [2024-10-11 16:47:44,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:44,465 INFO L124 PetriNetUnfolderBase]: 23/350 cut-off events. [2024-10-11 16:47:44,466 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-10-11 16:47:44,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 350 events. 23/350 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1173 event pairs, 6 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 337. Up to 24 conditions per place. [2024-10-11 16:47:44,468 INFO L140 encePairwiseOnDemand]: 194/197 looper letters, 10 selfloop transitions, 2 changer transitions 0/179 dead transitions. [2024-10-11 16:47:44,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 179 transitions, 404 flow [2024-10-11 16:47:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:47:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:47:44,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2024-10-11 16:47:44,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8950930626057529 [2024-10-11 16:47:44,469 INFO L175 Difference]: Start difference. First operand has 179 places, 178 transitions, 376 flow. Second operand 3 states and 529 transitions. [2024-10-11 16:47:44,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 179 transitions, 404 flow [2024-10-11 16:47:44,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 179 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 16:47:44,472 INFO L231 Difference]: Finished difference. Result has 177 places, 179 transitions, 378 flow [2024-10-11 16:47:44,473 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=177, PETRI_TRANSITIONS=179} [2024-10-11 16:47:44,475 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -6 predicate places. [2024-10-11 16:47:44,475 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 179 transitions, 378 flow [2024-10-11 16:47:44,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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) [2024-10-11 16:47:44,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:44,476 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, 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] [2024-10-11 16:47:44,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 16:47:44,476 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 16:47:44,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:44,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1381101320, now seen corresponding path program 1 times [2024-10-11 16:47:44,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:44,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691595838] [2024-10-11 16:47:44,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:44,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:44,533 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:44,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:44,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691595838] [2024-10-11 16:47:44,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691595838] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:44,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464481709] [2024-10-11 16:47:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:44,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:44,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:44,539 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:44,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 16:47:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:44,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 16:47:44,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:44,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:44,680 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:44,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464481709] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:44,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:44,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 16:47:44,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797037713] [2024-10-11 16:47:44,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:44,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:47:44,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:44,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:47:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:47:44,741 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 197 [2024-10-11 16:47:44,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 179 transitions, 378 flow. Second operand has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 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) [2024-10-11 16:47:44,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:44,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 197 [2024-10-11 16:47:44,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:44,826 INFO L124 PetriNetUnfolderBase]: 23/365 cut-off events. [2024-10-11 16:47:44,826 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-10-11 16:47:44,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 365 events. 23/365 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1146 event pairs, 6 based on Foata normal form. 2/326 useless extension candidates. Maximal degree in co-relation 372. Up to 24 conditions per place. [2024-10-11 16:47:44,829 INFO L140 encePairwiseOnDemand]: 191/197 looper letters, 14 selfloop transitions, 9 changer transitions 0/187 dead transitions. [2024-10-11 16:47:44,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 187 transitions, 442 flow [2024-10-11 16:47:44,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 16:47:44,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 16:47:44,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1546 transitions. [2024-10-11 16:47:44,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8719684151156233 [2024-10-11 16:47:44,832 INFO L175 Difference]: Start difference. First operand has 177 places, 179 transitions, 378 flow. Second operand 9 states and 1546 transitions. [2024-10-11 16:47:44,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 187 transitions, 442 flow [2024-10-11 16:47:44,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 187 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:44,835 INFO L231 Difference]: Finished difference. Result has 187 places, 185 transitions, 426 flow [2024-10-11 16:47:44,835 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=426, PETRI_PLACES=187, PETRI_TRANSITIONS=185} [2024-10-11 16:47:44,837 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 4 predicate places. [2024-10-11 16:47:44,837 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 185 transitions, 426 flow [2024-10-11 16:47:44,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 171.0) internal successors, (1710), 10 states have internal predecessors, (1710), 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) [2024-10-11 16:47:44,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:44,838 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:44,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 16:47:45,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:45,044 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 16:47:45,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:45,044 INFO L85 PathProgramCache]: Analyzing trace with hash -258899912, now seen corresponding path program 2 times [2024-10-11 16:47:45,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:45,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187855484] [2024-10-11 16:47:45,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:45,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:45,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:45,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187855484] [2024-10-11 16:47:45,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187855484] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:45,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094281481] [2024-10-11 16:47:45,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:47:45,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:45,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:45,156 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:45,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 16:47:45,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 16:47:45,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:47:45,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 16:47:45,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:45,280 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-11 16:47:45,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094281481] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:45,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:45,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 16:47:45,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435665381] [2024-10-11 16:47:45,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:45,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 16:47:45,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:45,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 16:47:45,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 16:47:45,429 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 197 [2024-10-11 16:47:45,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 185 transitions, 426 flow. Second operand has 15 states, 15 states have (on average 171.13333333333333) internal successors, (2567), 15 states have internal predecessors, (2567), 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) [2024-10-11 16:47:45,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:45,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 197 [2024-10-11 16:47:45,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:45,574 INFO L124 PetriNetUnfolderBase]: 23/404 cut-off events. [2024-10-11 16:47:45,574 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-11 16:47:45,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 404 events. 23/404 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1146 event pairs, 6 based on Foata normal form. 3/366 useless extension candidates. Maximal degree in co-relation 334. Up to 24 conditions per place. [2024-10-11 16:47:45,576 INFO L140 encePairwiseOnDemand]: 191/197 looper letters, 17 selfloop transitions, 18 changer transitions 0/199 dead transitions. [2024-10-11 16:47:45,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 199 transitions, 570 flow [2024-10-11 16:47:45,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 16:47:45,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 16:47:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3080 transitions. [2024-10-11 16:47:45,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8685843203609701 [2024-10-11 16:47:45,580 INFO L175 Difference]: Start difference. First operand has 187 places, 185 transitions, 426 flow. Second operand 18 states and 3080 transitions. [2024-10-11 16:47:45,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 199 transitions, 570 flow [2024-10-11 16:47:45,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 199 transitions, 558 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:45,583 INFO L231 Difference]: Finished difference. Result has 207 places, 195 transitions, 526 flow [2024-10-11 16:47:45,583 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=526, PETRI_PLACES=207, PETRI_TRANSITIONS=195} [2024-10-11 16:47:45,583 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 24 predicate places. [2024-10-11 16:47:45,584 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 195 transitions, 526 flow [2024-10-11 16:47:45,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 171.13333333333333) internal successors, (2567), 15 states have internal predecessors, (2567), 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) [2024-10-11 16:47:45,585 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:45,585 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:45,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 16:47:45,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 16:47:45,785 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-11 16:47:45,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:45,786 INFO L85 PathProgramCache]: Analyzing trace with hash 2092416218, now seen corresponding path program 3 times [2024-10-11 16:47:45,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:45,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443701667] [2024-10-11 16:47:45,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:45,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:45,808 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:47:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:45,827 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:47:45,827 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:47:45,827 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-10-11 16:47:45,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-10-11 16:47:45,827 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-10-11 16:47:45,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-10-11 16:47:45,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-10-11 16:47:45,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-10-11 16:47:45,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-10-11 16:47:45,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-10-11 16:47:45,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-10-11 16:47:45,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-10-11 16:47:45,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-10-11 16:47:45,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-10-11 16:47:45,828 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-10-11 16:47:45,829 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-10-11 16:47:45,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 16:47:45,829 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-11 16:47:45,829 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:47:45,829 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 16:47:45,851 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:47:45,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 268 transitions, 554 flow [2024-10-11 16:47:45,872 INFO L124 PetriNetUnfolderBase]: 30/299 cut-off events. [2024-10-11 16:47:45,872 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 16:47:45,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 299 events. 30/299 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 903 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 221. Up to 8 conditions per place. [2024-10-11 16:47:45,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 268 transitions, 554 flow [2024-10-11 16:47:45,876 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 268 transitions, 554 flow [2024-10-11 16:47:45,876 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:47:45,877 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;@6a69c39e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:47:45,877 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-11 16:47:45,879 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:47:45,879 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-11 16:47:45,879 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:47:45,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:45,879 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:45,879 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-11 16:47:45,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:45,879 INFO L85 PathProgramCache]: Analyzing trace with hash -568710291, now seen corresponding path program 1 times [2024-10-11 16:47:45,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:45,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999740962] [2024-10-11 16:47:45,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:45,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:46,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:47:46,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:46,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999740962] [2024-10-11 16:47:46,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999740962] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:46,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:46,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:47:46,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469366988] [2024-10-11 16:47:46,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:46,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:47:46,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:46,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:47:46,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:47:46,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 268 [2024-10-11 16:47:46,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 268 transitions, 554 flow. Second operand has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 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) [2024-10-11 16:47:46,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:46,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 268 [2024-10-11 16:47:46,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:47,037 INFO L124 PetriNetUnfolderBase]: 1081/4144 cut-off events. [2024-10-11 16:47:47,037 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2024-10-11 16:47:47,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5690 conditions, 4144 events. 1081/4144 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 39236 event pairs, 630 based on Foata normal form. 923/4280 useless extension candidates. Maximal degree in co-relation 1471. Up to 1318 conditions per place. [2024-10-11 16:47:47,095 INFO L140 encePairwiseOnDemand]: 247/268 looper letters, 27 selfloop transitions, 5 changer transitions 0/243 dead transitions. [2024-10-11 16:47:47,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 243 transitions, 568 flow [2024-10-11 16:47:47,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:47:47,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:47:47,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1344 transitions. [2024-10-11 16:47:47,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.835820895522388 [2024-10-11 16:47:47,105 INFO L175 Difference]: Start difference. First operand has 248 places, 268 transitions, 554 flow. Second operand 6 states and 1344 transitions. [2024-10-11 16:47:47,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 243 transitions, 568 flow [2024-10-11 16:47:47,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 243 transitions, 566 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 16:47:47,108 INFO L231 Difference]: Finished difference. Result has 242 places, 243 transitions, 512 flow [2024-10-11 16:47:47,112 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=512, PETRI_PLACES=242, PETRI_TRANSITIONS=243} [2024-10-11 16:47:47,113 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -6 predicate places. [2024-10-11 16:47:47,113 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 243 transitions, 512 flow [2024-10-11 16:47:47,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 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) [2024-10-11 16:47:47,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:47,114 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:47,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 16:47:47,114 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-11 16:47:47,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:47,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2102788219, now seen corresponding path program 1 times [2024-10-11 16:47:47,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:47,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247140494] [2024-10-11 16:47:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:47,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:47,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:47,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247140494] [2024-10-11 16:47:47,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247140494] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:47,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:47,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:47:47,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033236675] [2024-10-11 16:47:47,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:47,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:47:47,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:47,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:47:47,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:47:47,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 268 [2024-10-11 16:47:47,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 243 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2024-10-11 16:47:47,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:47,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 268 [2024-10-11 16:47:47,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:47,379 INFO L124 PetriNetUnfolderBase]: 95/1031 cut-off events. [2024-10-11 16:47:47,379 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-10-11 16:47:47,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 1031 events. 95/1031 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6257 event pairs, 42 based on Foata normal form. 1/897 useless extension candidates. Maximal degree in co-relation 1108. Up to 87 conditions per place. [2024-10-11 16:47:47,385 INFO L140 encePairwiseOnDemand]: 265/268 looper letters, 13 selfloop transitions, 2 changer transitions 0/244 dead transitions. [2024-10-11 16:47:47,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 244 transitions, 546 flow [2024-10-11 16:47:47,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:47:47,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:47:47,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2024-10-11 16:47:47,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8967661691542289 [2024-10-11 16:47:47,387 INFO L175 Difference]: Start difference. First operand has 242 places, 243 transitions, 512 flow. Second operand 3 states and 721 transitions. [2024-10-11 16:47:47,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 244 transitions, 546 flow [2024-10-11 16:47:47,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 244 transitions, 534 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 16:47:47,390 INFO L231 Difference]: Finished difference. Result has 240 places, 244 transitions, 514 flow [2024-10-11 16:47:47,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=240, PETRI_TRANSITIONS=244} [2024-10-11 16:47:47,390 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -8 predicate places. [2024-10-11 16:47:47,391 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 244 transitions, 514 flow [2024-10-11 16:47:47,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 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) [2024-10-11 16:47:47,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:47,391 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, 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] [2024-10-11 16:47:47,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 16:47:47,391 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-11 16:47:47,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:47,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1237560471, now seen corresponding path program 1 times [2024-10-11 16:47:47,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:47,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465846673] [2024-10-11 16:47:47,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:47,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:47,433 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:47,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:47,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465846673] [2024-10-11 16:47:47,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465846673] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:47,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747272134] [2024-10-11 16:47:47,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:47,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:47,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:47,435 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:47,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 16:47:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:47,507 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 16:47:47,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:47,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:47,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747272134] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:47,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:47,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 16:47:47,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165061027] [2024-10-11 16:47:47,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:47,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:47:47,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:47,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:47:47,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:47:47,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 268 [2024-10-11 16:47:47,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 244 transitions, 514 flow. Second operand has 10 states, 10 states have (on average 234.1) internal successors, (2341), 10 states have internal predecessors, (2341), 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) [2024-10-11 16:47:47,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:47,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 268 [2024-10-11 16:47:47,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:47,732 INFO L124 PetriNetUnfolderBase]: 95/1046 cut-off events. [2024-10-11 16:47:47,732 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-10-11 16:47:47,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 1046 events. 95/1046 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6217 event pairs, 42 based on Foata normal form. 2/913 useless extension candidates. Maximal degree in co-relation 1143. Up to 87 conditions per place. [2024-10-11 16:47:47,741 INFO L140 encePairwiseOnDemand]: 262/268 looper letters, 17 selfloop transitions, 9 changer transitions 0/252 dead transitions. [2024-10-11 16:47:47,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 252 transitions, 584 flow [2024-10-11 16:47:47,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 16:47:47,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 16:47:47,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2116 transitions. [2024-10-11 16:47:47,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8772802653399668 [2024-10-11 16:47:47,745 INFO L175 Difference]: Start difference. First operand has 240 places, 244 transitions, 514 flow. Second operand 9 states and 2116 transitions. [2024-10-11 16:47:47,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 252 transitions, 584 flow [2024-10-11 16:47:47,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 252 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:47,748 INFO L231 Difference]: Finished difference. Result has 250 places, 250 transitions, 562 flow [2024-10-11 16:47:47,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=562, PETRI_PLACES=250, PETRI_TRANSITIONS=250} [2024-10-11 16:47:47,749 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 2 predicate places. [2024-10-11 16:47:47,749 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 250 transitions, 562 flow [2024-10-11 16:47:47,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 234.1) internal successors, (2341), 10 states have internal predecessors, (2341), 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) [2024-10-11 16:47:47,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:47,750 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:47,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 16:47:47,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 16:47:47,951 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-11 16:47:47,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:47,952 INFO L85 PathProgramCache]: Analyzing trace with hash 805181609, now seen corresponding path program 2 times [2024-10-11 16:47:47,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:47,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569673792] [2024-10-11 16:47:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:47,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:48,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:48,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569673792] [2024-10-11 16:47:48,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569673792] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:48,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861229394] [2024-10-11 16:47:48,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:47:48,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:48,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:48,079 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:48,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 16:47:48,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 16:47:48,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:47:48,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 16:47:48,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:48,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:48,303 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 16:47:48,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861229394] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:48,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:48,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 16:47:48,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11238155] [2024-10-11 16:47:48,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:48,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 16:47:48,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:48,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 16:47:48,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 16:47:48,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 268 [2024-10-11 16:47:48,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 250 transitions, 562 flow. Second operand has 15 states, 15 states have (on average 234.2) internal successors, (3513), 15 states have internal predecessors, (3513), 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) [2024-10-11 16:47:48,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:48,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 268 [2024-10-11 16:47:48,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:48,609 INFO L124 PetriNetUnfolderBase]: 95/1085 cut-off events. [2024-10-11 16:47:48,609 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-10-11 16:47:48,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 1085 events. 95/1085 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6263 event pairs, 42 based on Foata normal form. 3/953 useless extension candidates. Maximal degree in co-relation 1105. Up to 87 conditions per place. [2024-10-11 16:47:48,618 INFO L140 encePairwiseOnDemand]: 262/268 looper letters, 20 selfloop transitions, 18 changer transitions 0/264 dead transitions. [2024-10-11 16:47:48,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 264 transitions, 712 flow [2024-10-11 16:47:48,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 16:47:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 16:47:48,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4217 transitions. [2024-10-11 16:47:48,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8741708126036484 [2024-10-11 16:47:48,626 INFO L175 Difference]: Start difference. First operand has 250 places, 250 transitions, 562 flow. Second operand 18 states and 4217 transitions. [2024-10-11 16:47:48,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 264 transitions, 712 flow [2024-10-11 16:47:48,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 264 transitions, 700 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:48,630 INFO L231 Difference]: Finished difference. Result has 270 places, 260 transitions, 662 flow [2024-10-11 16:47:48,630 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=662, PETRI_PLACES=270, PETRI_TRANSITIONS=260} [2024-10-11 16:47:48,631 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 22 predicate places. [2024-10-11 16:47:48,631 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 260 transitions, 662 flow [2024-10-11 16:47:48,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 234.2) internal successors, (3513), 15 states have internal predecessors, (3513), 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) [2024-10-11 16:47:48,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:48,633 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:48,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 16:47:48,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 16:47:48,838 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-11 16:47:48,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:48,838 INFO L85 PathProgramCache]: Analyzing trace with hash -968079173, now seen corresponding path program 3 times [2024-10-11 16:47:48,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:48,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731615605] [2024-10-11 16:47:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:48,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:48,862 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:47:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:47:48,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:47:48,881 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:47:48,881 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-10-11 16:47:48,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-10-11 16:47:48,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-10-11 16:47:48,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-10-11 16:47:48,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-10-11 16:47:48,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-10-11 16:47:48,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-10-11 16:47:48,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-10-11 16:47:48,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-10-11 16:47:48,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-10-11 16:47:48,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-10-11 16:47:48,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-10-11 16:47:48,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-10-11 16:47:48,882 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-10-11 16:47:48,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-10-11 16:47:48,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-10-11 16:47:48,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-10-11 16:47:48,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-10-11 16:47:48,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 16:47:48,883 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-11 16:47:48,883 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:47:48,883 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-11 16:47:48,936 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:47:48,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 339 transitions, 706 flow [2024-10-11 16:47:48,986 INFO L124 PetriNetUnfolderBase]: 39/381 cut-off events. [2024-10-11 16:47:48,986 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 16:47:48,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 381 events. 39/381 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1314 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 307. Up to 10 conditions per place. [2024-10-11 16:47:48,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 339 transitions, 706 flow [2024-10-11 16:47:48,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 339 transitions, 706 flow [2024-10-11 16:47:48,994 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:47:48,994 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;@6a69c39e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:47:48,994 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-11 16:47:48,997 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:47:48,998 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-11 16:47:48,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:47:48,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:48,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:48,998 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-11 16:47:48,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:48,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1283336288, now seen corresponding path program 1 times [2024-10-11 16:47:48,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:48,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001800378] [2024-10-11 16:47:48,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:48,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:49,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:47:49,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:49,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001800378] [2024-10-11 16:47:49,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001800378] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:49,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:49,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:47:49,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59547842] [2024-10-11 16:47:49,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:49,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:47:49,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:49,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:47:49,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:47:49,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 339 [2024-10-11 16:47:49,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 339 transitions, 706 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 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) [2024-10-11 16:47:49,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:49,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 339 [2024-10-11 16:47:49,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:53,155 INFO L124 PetriNetUnfolderBase]: 10778/30546 cut-off events. [2024-10-11 16:47:53,155 INFO L125 PetriNetUnfolderBase]: For 4130/4130 co-relation queries the response was YES. [2024-10-11 16:47:53,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44999 conditions, 30546 events. 10778/30546 cut-off events. For 4130/4130 co-relation queries the response was YES. Maximal size of possible extension queue 1419. Compared 371606 event pairs, 6804 based on Foata normal form. 7505/31785 useless extension candidates. Maximal degree in co-relation 6943. Up to 12509 conditions per place. [2024-10-11 16:47:53,499 INFO L140 encePairwiseOnDemand]: 314/339 looper letters, 34 selfloop transitions, 5 changer transitions 0/308 dead transitions. [2024-10-11 16:47:53,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 308 transitions, 722 flow [2024-10-11 16:47:53,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:47:53,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:47:53,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1709 transitions. [2024-10-11 16:47:53,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8402163225172075 [2024-10-11 16:47:53,503 INFO L175 Difference]: Start difference. First operand has 313 places, 339 transitions, 706 flow. Second operand 6 states and 1709 transitions. [2024-10-11 16:47:53,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 308 transitions, 722 flow [2024-10-11 16:47:53,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 308 transitions, 716 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-11 16:47:53,508 INFO L231 Difference]: Finished difference. Result has 305 places, 308 transitions, 648 flow [2024-10-11 16:47:53,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=648, PETRI_PLACES=305, PETRI_TRANSITIONS=308} [2024-10-11 16:47:53,509 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -8 predicate places. [2024-10-11 16:47:53,510 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 308 transitions, 648 flow [2024-10-11 16:47:53,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 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) [2024-10-11 16:47:53,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:53,511 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:53,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 16:47:53,511 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-11 16:47:53,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:53,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1321109678, now seen corresponding path program 1 times [2024-10-11 16:47:53,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:53,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998363677] [2024-10-11 16:47:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:53,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:47:53,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:53,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998363677] [2024-10-11 16:47:53,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998363677] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:53,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:47:53,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 16:47:53,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344414529] [2024-10-11 16:47:53,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:53,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:47:53,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:53,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:47:53,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 16:47:53,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 339 [2024-10-11 16:47:53,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 308 transitions, 648 flow. Second operand has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 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) [2024-10-11 16:47:53,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:53,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 339 [2024-10-11 16:47:53,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:54,057 INFO L124 PetriNetUnfolderBase]: 365/3128 cut-off events. [2024-10-11 16:47:54,058 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-10-11 16:47:54,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3594 conditions, 3128 events. 365/3128 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 27378 event pairs, 204 based on Foata normal form. 1/2712 useless extension candidates. Maximal degree in co-relation 3529. Up to 330 conditions per place. [2024-10-11 16:47:54,092 INFO L140 encePairwiseOnDemand]: 336/339 looper letters, 16 selfloop transitions, 2 changer transitions 0/309 dead transitions. [2024-10-11 16:47:54,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 309 transitions, 688 flow [2024-10-11 16:47:54,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:47:54,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:47:54,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 913 transitions. [2024-10-11 16:47:54,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8977384464110127 [2024-10-11 16:47:54,095 INFO L175 Difference]: Start difference. First operand has 305 places, 308 transitions, 648 flow. Second operand 3 states and 913 transitions. [2024-10-11 16:47:54,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 309 transitions, 688 flow [2024-10-11 16:47:54,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 309 transitions, 676 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 16:47:54,101 INFO L231 Difference]: Finished difference. Result has 303 places, 309 transitions, 650 flow [2024-10-11 16:47:54,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=650, PETRI_PLACES=303, PETRI_TRANSITIONS=309} [2024-10-11 16:47:54,101 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -10 predicate places. [2024-10-11 16:47:54,102 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 309 transitions, 650 flow [2024-10-11 16:47:54,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 300.0) internal successors, (900), 3 states have internal predecessors, (900), 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) [2024-10-11 16:47:54,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:54,102 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:54,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 16:47:54,102 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-11 16:47:54,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:54,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1049774545, now seen corresponding path program 1 times [2024-10-11 16:47:54,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:54,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757914992] [2024-10-11 16:47:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:54,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:47:54,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:54,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757914992] [2024-10-11 16:47:54,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757914992] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:54,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109269514] [2024-10-11 16:47:54,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:54,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:54,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:54,147 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:54,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 16:47:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:54,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-11 16:47:54,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 16:47:54,244 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:47:54,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109269514] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:54,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:47:54,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-11 16:47:54,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397139316] [2024-10-11 16:47:54,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:54,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 16:47:54,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 16:47:54,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:47:54,265 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 339 [2024-10-11 16:47:54,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 309 transitions, 650 flow. Second operand has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 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) [2024-10-11 16:47:54,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:54,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 339 [2024-10-11 16:47:54,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:54,999 INFO L124 PetriNetUnfolderBase]: 1136/6787 cut-off events. [2024-10-11 16:47:55,000 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2024-10-11 16:47:55,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8403 conditions, 6787 events. 1136/6787 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 71357 event pairs, 690 based on Foata normal form. 40/5841 useless extension candidates. Maximal degree in co-relation 8355. Up to 1091 conditions per place. [2024-10-11 16:47:55,095 INFO L140 encePairwiseOnDemand]: 336/339 looper letters, 27 selfloop transitions, 2 changer transitions 0/319 dead transitions. [2024-10-11 16:47:55,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 319 transitions, 743 flow [2024-10-11 16:47:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 16:47:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 16:47:55,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 921 transitions. [2024-10-11 16:47:55,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9056047197640118 [2024-10-11 16:47:55,097 INFO L175 Difference]: Start difference. First operand has 303 places, 309 transitions, 650 flow. Second operand 3 states and 921 transitions. [2024-10-11 16:47:55,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 319 transitions, 743 flow [2024-10-11 16:47:55,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 319 transitions, 741 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:55,103 INFO L231 Difference]: Finished difference. Result has 305 places, 310 transitions, 660 flow [2024-10-11 16:47:55,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=660, PETRI_PLACES=305, PETRI_TRANSITIONS=310} [2024-10-11 16:47:55,103 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -8 predicate places. [2024-10-11 16:47:55,104 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 310 transitions, 660 flow [2024-10-11 16:47:55,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 299.3333333333333) internal successors, (898), 3 states have internal predecessors, (898), 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) [2024-10-11 16:47:55,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:55,104 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:55,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 16:47:55,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 16:47:55,305 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-11 16:47:55,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:55,306 INFO L85 PathProgramCache]: Analyzing trace with hash -433069135, now seen corresponding path program 1 times [2024-10-11 16:47:55,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:55,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604299860] [2024-10-11 16:47:55,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:55,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:47:55,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:55,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604299860] [2024-10-11 16:47:55,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604299860] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:55,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692631918] [2024-10-11 16:47:55,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:55,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:55,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:55,362 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:55,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 16:47:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:55,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 16:47:55,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:55,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:47:55,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:47:55,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692631918] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:55,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:55,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 16:47:55,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181423579] [2024-10-11 16:47:55,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:55,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 16:47:55,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:55,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 16:47:55,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 16:47:55,599 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 339 [2024-10-11 16:47:55,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 310 transitions, 660 flow. Second operand has 10 states, 10 states have (on average 296.9) internal successors, (2969), 10 states have internal predecessors, (2969), 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) [2024-10-11 16:47:55,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:55,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 339 [2024-10-11 16:47:55,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:56,168 INFO L124 PetriNetUnfolderBase]: 366/3162 cut-off events. [2024-10-11 16:47:56,169 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-10-11 16:47:56,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3641 conditions, 3162 events. 366/3162 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27214 event pairs, 204 based on Foata normal form. 2/2742 useless extension candidates. Maximal degree in co-relation 3545. Up to 330 conditions per place. [2024-10-11 16:47:56,214 INFO L140 encePairwiseOnDemand]: 333/339 looper letters, 20 selfloop transitions, 9 changer transitions 0/318 dead transitions. [2024-10-11 16:47:56,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 318 transitions, 736 flow [2024-10-11 16:47:56,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 16:47:56,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 16:47:56,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2686 transitions. [2024-10-11 16:47:56,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8803670927564733 [2024-10-11 16:47:56,217 INFO L175 Difference]: Start difference. First operand has 305 places, 310 transitions, 660 flow. Second operand 9 states and 2686 transitions. [2024-10-11 16:47:56,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 318 transitions, 736 flow [2024-10-11 16:47:56,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 318 transitions, 734 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:56,222 INFO L231 Difference]: Finished difference. Result has 315 places, 316 transitions, 708 flow [2024-10-11 16:47:56,223 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=708, PETRI_PLACES=315, PETRI_TRANSITIONS=316} [2024-10-11 16:47:56,223 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 2 predicate places. [2024-10-11 16:47:56,223 INFO L471 AbstractCegarLoop]: Abstraction has has 315 places, 316 transitions, 708 flow [2024-10-11 16:47:56,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 296.9) internal successors, (2969), 10 states have internal predecessors, (2969), 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) [2024-10-11 16:47:56,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:56,225 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:56,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-11 16:47:56,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:56,426 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-11 16:47:56,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:56,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1329744367, now seen corresponding path program 2 times [2024-10-11 16:47:56,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:56,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474851759] [2024-10-11 16:47:56,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:56,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:56,548 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:47:56,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:56,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474851759] [2024-10-11 16:47:56,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474851759] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:56,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012389329] [2024-10-11 16:47:56,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 16:47:56,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:56,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:56,551 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:56,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 16:47:56,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 16:47:56,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 16:47:56,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 16:47:56,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:56,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-11 16:47:56,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-11 16:47:56,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 16:47:56,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-10-11 16:47:56,763 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 16:47:56,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-10-11 16:47:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-11 16:47:56,790 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 16:47:56,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012389329] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:47:56,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 16:47:56,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-11 16:47:56,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682030562] [2024-10-11 16:47:56,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:47:56,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:47:56,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:56,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:47:56,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-11 16:47:57,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 339 [2024-10-11 16:47:57,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 316 transitions, 708 flow. Second operand has 6 states, 6 states have (on average 290.3333333333333) internal successors, (1742), 6 states have internal predecessors, (1742), 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) [2024-10-11 16:47:57,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:57,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 339 [2024-10-11 16:47:57,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:47:58,658 INFO L124 PetriNetUnfolderBase]: 1957/10246 cut-off events. [2024-10-11 16:47:58,659 INFO L125 PetriNetUnfolderBase]: For 1260/1260 co-relation queries the response was YES. [2024-10-11 16:47:58,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13299 conditions, 10246 events. 1957/10246 cut-off events. For 1260/1260 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 114534 event pairs, 609 based on Foata normal form. 0/8928 useless extension candidates. Maximal degree in co-relation 13188. Up to 983 conditions per place. [2024-10-11 16:47:58,756 INFO L140 encePairwiseOnDemand]: 333/339 looper letters, 58 selfloop transitions, 6 changer transitions 0/351 dead transitions. [2024-10-11 16:47:58,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 351 transitions, 966 flow [2024-10-11 16:47:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 16:47:58,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 16:47:58,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1792 transitions. [2024-10-11 16:47:58,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8810226155358899 [2024-10-11 16:47:58,758 INFO L175 Difference]: Start difference. First operand has 315 places, 316 transitions, 708 flow. Second operand 6 states and 1792 transitions. [2024-10-11 16:47:58,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 351 transitions, 966 flow [2024-10-11 16:47:58,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 351 transitions, 960 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 16:47:58,763 INFO L231 Difference]: Finished difference. Result has 318 places, 315 transitions, 712 flow [2024-10-11 16:47:58,763 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=712, PETRI_PLACES=318, PETRI_TRANSITIONS=315} [2024-10-11 16:47:58,764 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 5 predicate places. [2024-10-11 16:47:58,764 INFO L471 AbstractCegarLoop]: Abstraction has has 318 places, 315 transitions, 712 flow [2024-10-11 16:47:58,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.3333333333333) internal successors, (1742), 6 states have internal predecessors, (1742), 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) [2024-10-11 16:47:58,764 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:47:58,765 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:47:58,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-11 16:47:58,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:58,965 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-11 16:47:58,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:47:58,966 INFO L85 PathProgramCache]: Analyzing trace with hash 952628931, now seen corresponding path program 1 times [2024-10-11 16:47:58,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:47:58,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955647131] [2024-10-11 16:47:58,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:58,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:47:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-11 16:47:59,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:47:59,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955647131] [2024-10-11 16:47:59,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955647131] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 16:47:59,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851864150] [2024-10-11 16:47:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:47:59,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 16:47:59,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 16:47:59,113 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 16:47:59,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-11 16:47:59,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:47:59,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 16:47:59,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 16:47:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-11 16:47:59,281 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 16:47:59,363 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-11 16:47:59,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851864150] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 16:47:59,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 16:47:59,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-11 16:47:59,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045986227] [2024-10-11 16:47:59,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 16:47:59,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 16:47:59,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:47:59,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 16:47:59,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-11 16:47:59,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 339 [2024-10-11 16:47:59,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 315 transitions, 712 flow. Second operand has 15 states, 15 states have (on average 297.26666666666665) internal successors, (4459), 15 states have internal predecessors, (4459), 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) [2024-10-11 16:47:59,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:47:59,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 339 [2024-10-11 16:47:59,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 16:48:00,124 INFO L124 PetriNetUnfolderBase]: 365/3201 cut-off events. [2024-10-11 16:48:00,124 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2024-10-11 16:48:00,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3739 conditions, 3201 events. 365/3201 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27176 event pairs, 204 based on Foata normal form. 3/2784 useless extension candidates. Maximal degree in co-relation 3559. Up to 330 conditions per place. [2024-10-11 16:48:00,174 INFO L140 encePairwiseOnDemand]: 333/339 looper letters, 23 selfloop transitions, 18 changer transitions 0/329 dead transitions. [2024-10-11 16:48:00,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 329 transitions, 862 flow [2024-10-11 16:48:00,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-11 16:48:00,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-11 16:48:00,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5354 transitions. [2024-10-11 16:48:00,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8774172402490986 [2024-10-11 16:48:00,181 INFO L175 Difference]: Start difference. First operand has 318 places, 315 transitions, 712 flow. Second operand 18 states and 5354 transitions. [2024-10-11 16:48:00,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 329 transitions, 862 flow [2024-10-11 16:48:00,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 329 transitions, 850 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 16:48:00,187 INFO L231 Difference]: Finished difference. Result has 334 places, 325 transitions, 806 flow [2024-10-11 16:48:00,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=339, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=806, PETRI_PLACES=334, PETRI_TRANSITIONS=325} [2024-10-11 16:48:00,189 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 21 predicate places. [2024-10-11 16:48:00,189 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 325 transitions, 806 flow [2024-10-11 16:48:00,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 297.26666666666665) internal successors, (4459), 15 states have internal predecessors, (4459), 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) [2024-10-11 16:48:00,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:48:00,191 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:48:00,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-10-11 16:48:00,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-11 16:48:00,392 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-11 16:48:00,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:48:00,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1109753564, now seen corresponding path program 2 times [2024-10-11 16:48:00,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:48:00,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693871664] [2024-10-11 16:48:00,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:00,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:48:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:48:00,431 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 16:48:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 16:48:00,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 16:48:00,475 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 16:48:00,475 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-10-11 16:48:00,475 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-10-11 16:48:00,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-10-11 16:48:00,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-10-11 16:48:00,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-10-11 16:48:00,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-10-11 16:48:00,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-10-11 16:48:00,476 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-10-11 16:48:00,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-10-11 16:48:00,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-10-11 16:48:00,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-10-11 16:48:00,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-10-11 16:48:00,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-10-11 16:48:00,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-10-11 16:48:00,477 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-10-11 16:48:00,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-10-11 16:48:00,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-10-11 16:48:00,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-10-11 16:48:00,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-10-11 16:48:00,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-10-11 16:48:00,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-10-11 16:48:00,478 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-10-11 16:48:00,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 16:48:00,479 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-10-11 16:48:00,479 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 16:48:00,480 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-11 16:48:00,529 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 16:48:00,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 410 transitions, 860 flow [2024-10-11 16:48:00,602 INFO L124 PetriNetUnfolderBase]: 48/463 cut-off events. [2024-10-11 16:48:00,602 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-11 16:48:00,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 463 events. 48/463 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1743 event pairs, 0 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 394. Up to 12 conditions per place. [2024-10-11 16:48:00,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 410 transitions, 860 flow [2024-10-11 16:48:00,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 410 transitions, 860 flow [2024-10-11 16:48:00,617 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 16:48:00,617 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;@6a69c39e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 16:48:00,617 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-11 16:48:00,620 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 16:48:00,620 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-11 16:48:00,621 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 16:48:00,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 16:48:00,621 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 16:48:00,621 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-11 16:48:00,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 16:48:00,622 INFO L85 PathProgramCache]: Analyzing trace with hash 735980218, now seen corresponding path program 1 times [2024-10-11 16:48:00,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 16:48:00,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150902365] [2024-10-11 16:48:00,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 16:48:00,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 16:48:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 16:48:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 16:48:00,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 16:48:00,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150902365] [2024-10-11 16:48:00,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150902365] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 16:48:00,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 16:48:00,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 16:48:00,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068308437] [2024-10-11 16:48:00,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 16:48:00,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 16:48:00,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 16:48:00,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 16:48:00,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-11 16:48:01,015 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 410 [2024-10-11 16:48:01,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 410 transitions, 860 flow. Second operand has 6 states, 6 states have (on average 335.5) internal successors, (2013), 6 states have internal predecessors, (2013), 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) [2024-10-11 16:48:01,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 16:48:01,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 410 [2024-10-11 16:48:01,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand