/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 16:30:48,420 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 16:30:48,474 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 16:30:48,478 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 16:30:48,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 16:30:48,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 16:30:48,498 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 16:30:48,499 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 16:30:48,499 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 16:30:48,500 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 16:30:48,500 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 16:30:48,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 16:30:48,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 16:30:48,501 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 16:30:48,501 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 16:30:48,502 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 16:30:48,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 16:30:48,502 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 16:30:48,503 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 16:30:48,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 16:30:48,503 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 16:30:48,504 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 16:30:48,504 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 16:30:48,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 16:30:48,505 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 16:30:48,505 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 16:30:48,506 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 16:30:48,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 16:30:48,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 16:30:48,507 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 16:30:48,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 16:30:48,507 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 16:30:48,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 16:30:48,508 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 16:30:48,513 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 16:30:48,513 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 16:30:48,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 16:30:48,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 16:30:48,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 16:30:48,846 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 16:30:48,847 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 16:30:48,849 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i [2023-08-25 16:30:50,040 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 16:30:50,382 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 16:30:50,383 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i [2023-08-25 16:30:50,407 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ddb7729/56f814d1b6f8461eba31706dcffbf65e/FLAG1e75b69bc [2023-08-25 16:30:50,421 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ddb7729/56f814d1b6f8461eba31706dcffbf65e [2023-08-25 16:30:50,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 16:30:50,427 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 16:30:50,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 16:30:50,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 16:30:50,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 16:30:50,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:30:50" (1/1) ... [2023-08-25 16:30:50,441 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28343fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:30:50, skipping insertion in model container [2023-08-25 16:30:50,441 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:30:50" (1/1) ... [2023-08-25 16:30:50,503 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 16:30:51,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 16:30:51,156 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 16:30:51,180 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-25 16:30:51,182 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-25 16:30:51,187 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [729] [2023-08-25 16:30:51,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 16:30:51,402 INFO L206 MainTranslator]: Completed translation [2023-08-25 16:30:51,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:30:51 WrapperNode [2023-08-25 16:30:51,402 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 16:30:51,403 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 16:30:51,403 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 16:30:51,404 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 16:30:51,409 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:30:51" (1/1) ... [2023-08-25 16:30:51,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:30:51" (1/1) ... [2023-08-25 16:30:51,478 INFO L138 Inliner]: procedures = 486, calls = 44, calls flagged for inlining = 16, calls inlined = 21, statements flattened = 287 [2023-08-25 16:30:51,478 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 16:30:51,479 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 16:30:51,479 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 16:30:51,479 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 16:30:51,487 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:30:51" (1/1) ... [2023-08-25 16:30:51,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:30:51" (1/1) ... [2023-08-25 16:30:51,493 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:30:51" (1/1) ... [2023-08-25 16:30:51,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:30:51" (1/1) ... [2023-08-25 16:30:51,520 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:30:51" (1/1) ... [2023-08-25 16:30:51,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:30:51" (1/1) ... [2023-08-25 16:30:51,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:30:51" (1/1) ... [2023-08-25 16:30:51,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:30:51" (1/1) ... [2023-08-25 16:30:51,536 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 16:30:51,536 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 16:30:51,536 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 16:30:51,537 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 16:30:51,538 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:30:51" (1/1) ... [2023-08-25 16:30:51,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 16:30:51,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 16:30:51,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 16:30:51,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 16:30:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2023-08-25 16:30:51,603 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2023-08-25 16:30:51,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 16:30:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 16:30:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2023-08-25 16:30:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2023-08-25 16:30:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 16:30:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 16:30:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-25 16:30:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 16:30:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 16:30:51,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 16:30:51,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 16:30:51,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 16:30:51,606 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 16:30:51,830 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 16:30:51,831 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 16:30:52,077 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 16:30:52,096 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 16:30:52,096 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 16:30:52,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:30:52 BoogieIcfgContainer [2023-08-25 16:30:52,098 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 16:30:52,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 16:30:52,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 16:30:52,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 16:30:52,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 04:30:50" (1/3) ... [2023-08-25 16:30:52,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684a7328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:30:52, skipping insertion in model container [2023-08-25 16:30:52,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:30:51" (2/3) ... [2023-08-25 16:30:52,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@684a7328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:30:52, skipping insertion in model container [2023-08-25 16:30:52,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:30:52" (3/3) ... [2023-08-25 16:30:52,105 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2023-08-25 16:30:52,120 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 16:30:52,120 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-25 16:30:52,120 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 16:30:52,197 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-25 16:30:52,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 421 places, 459 transitions, 948 flow [2023-08-25 16:30:52,409 INFO L124 PetriNetUnfolderBase]: 41/467 cut-off events. [2023-08-25 16:30:52,409 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 16:30:52,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 467 events. 41/467 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1302 event pairs, 0 based on Foata normal form. 0/383 useless extension candidates. Maximal degree in co-relation 313. Up to 11 conditions per place. [2023-08-25 16:30:52,418 INFO L82 GeneralOperation]: Start removeDead. Operand has 421 places, 459 transitions, 948 flow [2023-08-25 16:30:52,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 287 transitions, 591 flow [2023-08-25 16:30:52,430 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 16:30:52,437 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 287 transitions, 591 flow [2023-08-25 16:30:52,439 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 287 transitions, 591 flow [2023-08-25 16:30:52,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 287 transitions, 591 flow [2023-08-25 16:30:52,505 INFO L124 PetriNetUnfolderBase]: 38/420 cut-off events. [2023-08-25 16:30:52,505 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 16:30:52,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 420 events. 38/420 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1072 event pairs, 0 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 308. Up to 11 conditions per place. [2023-08-25 16:30:52,520 INFO L119 LiptonReduction]: Number of co-enabled transitions 18732 [2023-08-25 16:30:58,520 INFO L134 LiptonReduction]: Checked pairs total: 48134 [2023-08-25 16:30:58,521 INFO L136 LiptonReduction]: Total number of compositions: 347 [2023-08-25 16:30:58,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-25 16:30:58,537 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@653ed8c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 16:30:58,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-25 16:30:58,544 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 16:30:58,544 INFO L124 PetriNetUnfolderBase]: 8/60 cut-off events. [2023-08-25 16:30:58,544 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 16:30:58,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:30:58,545 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 16:30:58,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_usbThread1of1ForFork0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_usbThread1of1ForFork0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread_usbErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-25 16:30:58,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:30:58,549 INFO L85 PathProgramCache]: Analyzing trace with hash 425459141, now seen corresponding path program 1 times [2023-08-25 16:30:58,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:30:58,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948951115] [2023-08-25 16:30:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:30:58,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:30:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:30:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 16:30:58,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:30:58,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948951115] [2023-08-25 16:30:58,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948951115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:30:58,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:30:58,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 16:30:58,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740900621] [2023-08-25 16:30:58,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:30:58,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 16:30:58,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:30:58,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 16:30:58,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 16:30:58,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 806 [2023-08-25 16:30:58,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 68 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 405.6666666666667) internal successors, (1217), 3 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:30:58,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:30:58,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 806 [2023-08-25 16:30:58,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:30:59,135 INFO L124 PetriNetUnfolderBase]: 304/665 cut-off events. [2023-08-25 16:30:59,136 INFO L125 PetriNetUnfolderBase]: For 17/47 co-relation queries the response was YES. [2023-08-25 16:30:59,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1170 conditions, 665 events. 304/665 cut-off events. For 17/47 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3497 event pairs, 132 based on Foata normal form. 15/446 useless extension candidates. Maximal degree in co-relation 958. Up to 347 conditions per place. [2023-08-25 16:30:59,141 INFO L140 encePairwiseOnDemand]: 793/806 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2023-08-25 16:30:59,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 69 transitions, 235 flow [2023-08-25 16:30:59,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 16:30:59,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 16:30:59,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1264 transitions. [2023-08-25 16:30:59,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.522746071133168 [2023-08-25 16:30:59,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1264 transitions. [2023-08-25 16:30:59,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1264 transitions. [2023-08-25 16:30:59,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:30:59,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1264 transitions. [2023-08-25 16:30:59,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 421.3333333333333) internal successors, (1264), 3 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:30:59,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 806.0) internal successors, (3224), 4 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:30:59,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 806.0) internal successors, (3224), 4 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:30:59,180 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 153 flow. Second operand 3 states and 1264 transitions. [2023-08-25 16:30:59,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 69 transitions, 235 flow [2023-08-25 16:30:59,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 225 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 16:30:59,184 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2023-08-25 16:30:59,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=806, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2023-08-25 16:30:59,189 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2023-08-25 16:30:59,189 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2023-08-25 16:30:59,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 405.6666666666667) internal successors, (1217), 3 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:30:59,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-25 16:30:59,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-25 16:30:59,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-25 16:30:59,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 16:30:59,192 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-25 16:30:59,194 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-08-25 16:30:59,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 421 places, 459 transitions, 948 flow [2023-08-25 16:30:59,250 INFO L124 PetriNetUnfolderBase]: 41/467 cut-off events. [2023-08-25 16:30:59,250 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 16:30:59,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 467 events. 41/467 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1302 event pairs, 0 based on Foata normal form. 0/383 useless extension candidates. Maximal degree in co-relation 313. Up to 11 conditions per place. [2023-08-25 16:30:59,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 421 places, 459 transitions, 948 flow [2023-08-25 16:30:59,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 319 transitions, 655 flow [2023-08-25 16:30:59,255 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 16:30:59,255 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 296 places, 319 transitions, 655 flow [2023-08-25 16:30:59,255 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 296 places, 319 transitions, 655 flow [2023-08-25 16:30:59,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 319 transitions, 655 flow [2023-08-25 16:30:59,307 INFO L124 PetriNetUnfolderBase]: 41/467 cut-off events. [2023-08-25 16:30:59,308 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 16:30:59,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 467 events. 41/467 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1300 event pairs, 0 based on Foata normal form. 0/383 useless extension candidates. Maximal degree in co-relation 313. Up to 11 conditions per place. [2023-08-25 16:30:59,318 INFO L119 LiptonReduction]: Number of co-enabled transitions 18942 [2023-08-25 16:31:05,761 INFO L134 LiptonReduction]: Checked pairs total: 51683 [2023-08-25 16:31:05,761 INFO L136 LiptonReduction]: Total number of compositions: 404 [2023-08-25 16:31:05,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 16:31:05,764 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@653ed8c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 16:31:05,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-08-25 16:31:05,765 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 16:31:05,765 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 16:31:05,765 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 16:31:05,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:31:05,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 16:31:05,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-25 16:31:05,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:31:05,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1723, now seen corresponding path program 1 times [2023-08-25 16:31:05,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:31:05,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140962213] [2023-08-25 16:31:05,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:31:05,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:31:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:31:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 16:31:05,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:31:05,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140962213] [2023-08-25 16:31:05,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140962213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:31:05,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:31:05,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 16:31:05,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143424018] [2023-08-25 16:31:05,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:31:05,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 16:31:05,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:31:05,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 16:31:05,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 16:31:05,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 863 [2023-08-25 16:31:05,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 179 flow. Second operand has 2 states, 2 states have (on average 421.5) internal successors, (843), 2 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:05,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:31:05,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 863 [2023-08-25 16:31:05,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:31:05,915 INFO L124 PetriNetUnfolderBase]: 730/1396 cut-off events. [2023-08-25 16:31:05,916 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-25 16:31:05,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2521 conditions, 1396 events. 730/1396 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7919 event pairs, 449 based on Foata normal form. 28/836 useless extension candidates. Maximal degree in co-relation 2296. Up to 1077 conditions per place. [2023-08-25 16:31:05,928 INFO L140 encePairwiseOnDemand]: 846/863 looper letters, 35 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2023-08-25 16:31:05,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 215 flow [2023-08-25 16:31:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 16:31:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 16:31:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 894 transitions. [2023-08-25 16:31:05,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5179606025492468 [2023-08-25 16:31:05,931 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 894 transitions. [2023-08-25 16:31:05,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 894 transitions. [2023-08-25 16:31:05,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:31:05,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 894 transitions. [2023-08-25 16:31:05,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 447.0) internal successors, (894), 2 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:05,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 863.0) internal successors, (2589), 3 states have internal predecessors, (2589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:05,938 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 863.0) internal successors, (2589), 3 states have internal predecessors, (2589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:05,938 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 179 flow. Second operand 2 states and 894 transitions. [2023-08-25 16:31:05,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 215 flow [2023-08-25 16:31:05,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 64 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 16:31:05,943 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 141 flow [2023-08-25 16:31:05,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=141, PETRI_PLACES=60, PETRI_TRANSITIONS=64} [2023-08-25 16:31:05,944 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -16 predicate places. [2023-08-25 16:31:05,944 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 141 flow [2023-08-25 16:31:05,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 421.5) internal successors, (843), 2 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:05,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:31:05,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 16:31:05,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 16:31:05,945 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_usbErr10ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-25 16:31:05,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:31:05,946 INFO L85 PathProgramCache]: Analyzing trace with hash -651235441, now seen corresponding path program 1 times [2023-08-25 16:31:05,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:31:05,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531964706] [2023-08-25 16:31:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:31:05,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:31:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:31:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 16:31:06,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:31:06,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531964706] [2023-08-25 16:31:06,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531964706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:31:06,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:31:06,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 16:31:06,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611492739] [2023-08-25 16:31:06,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:31:06,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 16:31:06,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:31:06,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 16:31:06,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 16:31:06,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 863 [2023-08-25 16:31:06,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 64 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:06,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:31:06,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 863 [2023-08-25 16:31:06,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:31:06,293 INFO L124 PetriNetUnfolderBase]: 1674/2670 cut-off events. [2023-08-25 16:31:06,293 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-25 16:31:06,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5252 conditions, 2670 events. 1674/2670 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 12982 event pairs, 1133 based on Foata normal form. 0/1547 useless extension candidates. Maximal degree in co-relation 5248. Up to 2418 conditions per place. [2023-08-25 16:31:06,308 INFO L140 encePairwiseOnDemand]: 858/863 looper letters, 60 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2023-08-25 16:31:06,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 299 flow [2023-08-25 16:31:06,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 16:31:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 16:31:06,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1178 transitions. [2023-08-25 16:31:06,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4550019312475859 [2023-08-25 16:31:06,312 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1178 transitions. [2023-08-25 16:31:06,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1178 transitions. [2023-08-25 16:31:06,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:31:06,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1178 transitions. [2023-08-25 16:31:06,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 392.6666666666667) internal successors, (1178), 3 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:06,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:06,323 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:06,323 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 141 flow. Second operand 3 states and 1178 transitions. [2023-08-25 16:31:06,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 299 flow [2023-08-25 16:31:06,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 299 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 16:31:06,326 INFO L231 Difference]: Finished difference. Result has 63 places, 67 transitions, 167 flow [2023-08-25 16:31:06,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=63, PETRI_TRANSITIONS=67} [2023-08-25 16:31:06,328 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -13 predicate places. [2023-08-25 16:31:06,328 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 67 transitions, 167 flow [2023-08-25 16:31:06,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:06,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:31:06,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 16:31:06,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 16:31:06,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread_usbErr11ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-25 16:31:06,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:31:06,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1228479438, now seen corresponding path program 1 times [2023-08-25 16:31:06,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:31:06,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318898458] [2023-08-25 16:31:06,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:31:06,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:31:06,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:31:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 16:31:06,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:31:06,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318898458] [2023-08-25 16:31:06,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318898458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:31:06,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:31:06,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 16:31:06,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382338542] [2023-08-25 16:31:06,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:31:06,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 16:31:06,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:31:06,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 16:31:06,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 16:31:06,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 863 [2023-08-25 16:31:06,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 67 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 375.6666666666667) internal successors, (1127), 3 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:06,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:31:06,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 863 [2023-08-25 16:31:06,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:31:06,647 INFO L124 PetriNetUnfolderBase]: 1714/2787 cut-off events. [2023-08-25 16:31:06,647 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2023-08-25 16:31:06,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5933 conditions, 2787 events. 1714/2787 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 14048 event pairs, 707 based on Foata normal form. 0/1719 useless extension candidates. Maximal degree in co-relation 5927. Up to 1822 conditions per place. [2023-08-25 16:31:06,663 INFO L140 encePairwiseOnDemand]: 849/863 looper letters, 79 selfloop transitions, 13 changer transitions 0/107 dead transitions. [2023-08-25 16:31:06,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 107 transitions, 449 flow [2023-08-25 16:31:06,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 16:31:06,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 16:31:06,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1209 transitions. [2023-08-25 16:31:06,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46697566628041715 [2023-08-25 16:31:06,666 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1209 transitions. [2023-08-25 16:31:06,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1209 transitions. [2023-08-25 16:31:06,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:31:06,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1209 transitions. [2023-08-25 16:31:06,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 403.0) internal successors, (1209), 3 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:06,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:06,675 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:06,675 INFO L175 Difference]: Start difference. First operand has 63 places, 67 transitions, 167 flow. Second operand 3 states and 1209 transitions. [2023-08-25 16:31:06,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 107 transitions, 449 flow [2023-08-25 16:31:06,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 107 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 16:31:06,681 INFO L231 Difference]: Finished difference. Result has 66 places, 77 transitions, 269 flow [2023-08-25 16:31:06,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=66, PETRI_TRANSITIONS=77} [2023-08-25 16:31:06,684 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -10 predicate places. [2023-08-25 16:31:06,686 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 77 transitions, 269 flow [2023-08-25 16:31:06,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 375.6666666666667) internal successors, (1127), 3 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:06,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:31:06,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 16:31:06,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 16:31:06,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-25 16:31:06,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:31:06,690 INFO L85 PathProgramCache]: Analyzing trace with hash -384928066, now seen corresponding path program 1 times [2023-08-25 16:31:06,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:31:06,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729275411] [2023-08-25 16:31:06,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:31:06,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:31:06,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:31:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 16:31:06,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:31:06,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729275411] [2023-08-25 16:31:06,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729275411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:31:06,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:31:06,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 16:31:06,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587567381] [2023-08-25 16:31:06,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:31:06,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 16:31:06,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:31:06,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 16:31:06,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 16:31:06,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 863 [2023-08-25 16:31:06,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 77 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 414.6666666666667) internal successors, (1244), 3 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:06,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:31:06,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 863 [2023-08-25 16:31:06,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:31:06,966 INFO L124 PetriNetUnfolderBase]: 1069/1986 cut-off events. [2023-08-25 16:31:06,966 INFO L125 PetriNetUnfolderBase]: For 545/593 co-relation queries the response was YES. [2023-08-25 16:31:06,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4243 conditions, 1986 events. 1069/1986 cut-off events. For 545/593 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11569 event pairs, 610 based on Foata normal form. 0/1260 useless extension candidates. Maximal degree in co-relation 4236. Up to 1485 conditions per place. [2023-08-25 16:31:06,978 INFO L140 encePairwiseOnDemand]: 860/863 looper letters, 37 selfloop transitions, 0 changer transitions 2/78 dead transitions. [2023-08-25 16:31:06,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 349 flow [2023-08-25 16:31:06,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 16:31:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 16:31:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1279 transitions. [2023-08-25 16:31:06,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940131324835844 [2023-08-25 16:31:06,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1279 transitions. [2023-08-25 16:31:06,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1279 transitions. [2023-08-25 16:31:06,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:31:06,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1279 transitions. [2023-08-25 16:31:06,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 426.3333333333333) internal successors, (1279), 3 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:06,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:06,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:06,991 INFO L175 Difference]: Start difference. First operand has 66 places, 77 transitions, 269 flow. Second operand 3 states and 1279 transitions. [2023-08-25 16:31:06,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 349 flow [2023-08-25 16:31:06,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 323 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 16:31:06,996 INFO L231 Difference]: Finished difference. Result has 67 places, 76 transitions, 243 flow [2023-08-25 16:31:06,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=67, PETRI_TRANSITIONS=76} [2023-08-25 16:31:06,999 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -9 predicate places. [2023-08-25 16:31:06,999 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 76 transitions, 243 flow [2023-08-25 16:31:07,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 414.6666666666667) internal successors, (1244), 3 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:07,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:31:07,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 16:31:07,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 16:31:07,000 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-25 16:31:07,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:31:07,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1195631955, now seen corresponding path program 1 times [2023-08-25 16:31:07,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:31:07,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64099397] [2023-08-25 16:31:07,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:31:07,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:31:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:31:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 16:31:07,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:31:07,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64099397] [2023-08-25 16:31:07,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64099397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:31:07,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:31:07,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 16:31:07,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310939096] [2023-08-25 16:31:07,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:31:07,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 16:31:07,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:31:07,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 16:31:07,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 16:31:07,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 863 [2023-08-25 16:31:07,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 76 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:07,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:31:07,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 863 [2023-08-25 16:31:07,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:31:07,328 INFO L124 PetriNetUnfolderBase]: 1632/2685 cut-off events. [2023-08-25 16:31:07,328 INFO L125 PetriNetUnfolderBase]: For 696/702 co-relation queries the response was YES. [2023-08-25 16:31:07,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6500 conditions, 2685 events. 1632/2685 cut-off events. For 696/702 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 13644 event pairs, 925 based on Foata normal form. 0/1717 useless extension candidates. Maximal degree in co-relation 6492. Up to 2325 conditions per place. [2023-08-25 16:31:07,346 INFO L140 encePairwiseOnDemand]: 856/863 looper letters, 83 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2023-08-25 16:31:07,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 108 transitions, 522 flow [2023-08-25 16:31:07,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 16:31:07,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 16:31:07,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1190 transitions. [2023-08-25 16:31:07,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45963692545384316 [2023-08-25 16:31:07,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1190 transitions. [2023-08-25 16:31:07,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1190 transitions. [2023-08-25 16:31:07,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:31:07,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1190 transitions. [2023-08-25 16:31:07,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 396.6666666666667) internal successors, (1190), 3 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:07,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:07,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:07,361 INFO L175 Difference]: Start difference. First operand has 67 places, 76 transitions, 243 flow. Second operand 3 states and 1190 transitions. [2023-08-25 16:31:07,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 108 transitions, 522 flow [2023-08-25 16:31:07,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 108 transitions, 514 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-25 16:31:07,366 INFO L231 Difference]: Finished difference. Result has 68 places, 82 transitions, 307 flow [2023-08-25 16:31:07,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=307, PETRI_PLACES=68, PETRI_TRANSITIONS=82} [2023-08-25 16:31:07,367 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -8 predicate places. [2023-08-25 16:31:07,367 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 82 transitions, 307 flow [2023-08-25 16:31:07,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 372.6666666666667) internal successors, (1118), 3 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:07,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:31:07,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 16:31:07,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 16:31:07,372 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_usbErr4ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-25 16:31:07,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:31:07,373 INFO L85 PathProgramCache]: Analyzing trace with hash -684197046, now seen corresponding path program 1 times [2023-08-25 16:31:07,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:31:07,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141164426] [2023-08-25 16:31:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:31:07,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:31:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:31:07,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 16:31:07,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:31:07,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141164426] [2023-08-25 16:31:07,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141164426] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:31:07,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:31:07,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 16:31:07,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535836734] [2023-08-25 16:31:07,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:31:07,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 16:31:07,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:31:07,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 16:31:07,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 16:31:07,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 863 [2023-08-25 16:31:07,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 82 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:07,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:31:07,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 863 [2023-08-25 16:31:07,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:31:07,653 INFO L124 PetriNetUnfolderBase]: 1128/2079 cut-off events. [2023-08-25 16:31:07,653 INFO L125 PetriNetUnfolderBase]: For 632/736 co-relation queries the response was YES. [2023-08-25 16:31:07,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4579 conditions, 2079 events. 1128/2079 cut-off events. For 632/736 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12179 event pairs, 492 based on Foata normal form. 42/1360 useless extension candidates. Maximal degree in co-relation 4570. Up to 1261 conditions per place. [2023-08-25 16:31:07,666 INFO L140 encePairwiseOnDemand]: 856/863 looper letters, 47 selfloop transitions, 6 changer transitions 0/95 dead transitions. [2023-08-25 16:31:07,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 95 transitions, 442 flow [2023-08-25 16:31:07,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 16:31:07,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 16:31:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1257 transitions. [2023-08-25 16:31:07,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855156431054461 [2023-08-25 16:31:07,670 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1257 transitions. [2023-08-25 16:31:07,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1257 transitions. [2023-08-25 16:31:07,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:31:07,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1257 transitions. [2023-08-25 16:31:07,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 419.0) internal successors, (1257), 3 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:07,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:07,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:07,678 INFO L175 Difference]: Start difference. First operand has 68 places, 82 transitions, 307 flow. Second operand 3 states and 1257 transitions. [2023-08-25 16:31:07,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 95 transitions, 442 flow [2023-08-25 16:31:07,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 95 transitions, 431 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 16:31:07,681 INFO L231 Difference]: Finished difference. Result has 71 places, 85 transitions, 335 flow [2023-08-25 16:31:07,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=335, PETRI_PLACES=71, PETRI_TRANSITIONS=85} [2023-08-25 16:31:07,682 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -5 predicate places. [2023-08-25 16:31:07,682 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 85 transitions, 335 flow [2023-08-25 16:31:07,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 404.6666666666667) internal successors, (1214), 3 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:07,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:31:07,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 16:31:07,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 16:31:07,683 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_usbErr12ASSERT_VIOLATIONASSERT === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-25 16:31:07,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:31:07,683 INFO L85 PathProgramCache]: Analyzing trace with hash -571841443, now seen corresponding path program 1 times [2023-08-25 16:31:07,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:31:07,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69144702] [2023-08-25 16:31:07,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:31:07,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:31:07,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:31:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 16:31:07,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:31:07,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69144702] [2023-08-25 16:31:07,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69144702] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:31:07,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:31:07,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 16:31:07,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132149371] [2023-08-25 16:31:07,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:31:07,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 16:31:07,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:31:07,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 16:31:07,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 16:31:07,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 863 [2023-08-25 16:31:07,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 85 transitions, 335 flow. Second operand has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:07,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:31:07,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 863 [2023-08-25 16:31:07,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:31:07,973 INFO L124 PetriNetUnfolderBase]: 1395/2637 cut-off events. [2023-08-25 16:31:07,973 INFO L125 PetriNetUnfolderBase]: For 885/1001 co-relation queries the response was YES. [2023-08-25 16:31:07,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6202 conditions, 2637 events. 1395/2637 cut-off events. For 885/1001 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 16800 event pairs, 529 based on Foata normal form. 43/1947 useless extension candidates. Maximal degree in co-relation 6192. Up to 1342 conditions per place. [2023-08-25 16:31:07,990 INFO L140 encePairwiseOnDemand]: 856/863 looper letters, 54 selfloop transitions, 6 changer transitions 0/102 dead transitions. [2023-08-25 16:31:07,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 102 transitions, 514 flow [2023-08-25 16:31:07,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 16:31:07,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 16:31:07,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1261 transitions. [2023-08-25 16:31:07,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4870606411741985 [2023-08-25 16:31:07,994 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1261 transitions. [2023-08-25 16:31:07,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1261 transitions. [2023-08-25 16:31:07,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:31:07,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1261 transitions. [2023-08-25 16:31:07,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 420.3333333333333) internal successors, (1261), 3 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:08,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:08,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:08,001 INFO L175 Difference]: Start difference. First operand has 71 places, 85 transitions, 335 flow. Second operand 3 states and 1261 transitions. [2023-08-25 16:31:08,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 102 transitions, 514 flow [2023-08-25 16:31:08,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 102 transitions, 502 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 16:31:08,006 INFO L231 Difference]: Finished difference. Result has 73 places, 88 transitions, 363 flow [2023-08-25 16:31:08,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=73, PETRI_TRANSITIONS=88} [2023-08-25 16:31:08,006 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -3 predicate places. [2023-08-25 16:31:08,007 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 88 transitions, 363 flow [2023-08-25 16:31:08,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:08,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:31:08,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 16:31:08,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 16:31:08,008 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-25 16:31:08,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:31:08,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1082622029, now seen corresponding path program 1 times [2023-08-25 16:31:08,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:31:08,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383450820] [2023-08-25 16:31:08,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:31:08,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:31:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:31:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 16:31:08,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:31:08,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383450820] [2023-08-25 16:31:08,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383450820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:31:08,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:31:08,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 16:31:08,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415628276] [2023-08-25 16:31:08,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:31:08,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 16:31:08,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:31:08,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 16:31:08,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 16:31:08,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 399 out of 863 [2023-08-25 16:31:08,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 88 transitions, 363 flow. Second operand has 6 states, 6 states have (on average 400.6666666666667) internal successors, (2404), 6 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:08,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:31:08,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 399 of 863 [2023-08-25 16:31:08,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:31:09,071 INFO L124 PetriNetUnfolderBase]: 4274/6730 cut-off events. [2023-08-25 16:31:09,071 INFO L125 PetriNetUnfolderBase]: For 3665/4189 co-relation queries the response was YES. [2023-08-25 16:31:09,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17050 conditions, 6730 events. 4274/6730 cut-off events. For 3665/4189 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 43088 event pairs, 1210 based on Foata normal form. 175/5862 useless extension candidates. Maximal degree in co-relation 17039. Up to 2765 conditions per place. [2023-08-25 16:31:09,116 INFO L140 encePairwiseOnDemand]: 858/863 looper letters, 205 selfloop transitions, 4 changer transitions 0/239 dead transitions. [2023-08-25 16:31:09,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 239 transitions, 1399 flow [2023-08-25 16:31:09,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 16:31:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 16:31:09,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2556 transitions. [2023-08-25 16:31:09,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4936268829663963 [2023-08-25 16:31:09,122 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2556 transitions. [2023-08-25 16:31:09,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2556 transitions. [2023-08-25 16:31:09,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:31:09,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2556 transitions. [2023-08-25 16:31:09,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 426.0) internal successors, (2556), 6 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:09,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 863.0) internal successors, (6041), 7 states have internal predecessors, (6041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:09,135 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 863.0) internal successors, (6041), 7 states have internal predecessors, (6041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:09,135 INFO L175 Difference]: Start difference. First operand has 73 places, 88 transitions, 363 flow. Second operand 6 states and 2556 transitions. [2023-08-25 16:31:09,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 239 transitions, 1399 flow [2023-08-25 16:31:09,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 239 transitions, 1347 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 16:31:09,146 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 357 flow [2023-08-25 16:31:09,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=75, PETRI_TRANSITIONS=87} [2023-08-25 16:31:09,147 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2023-08-25 16:31:09,147 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 357 flow [2023-08-25 16:31:09,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 400.6666666666667) internal successors, (2404), 6 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:09,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:31:09,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 16:31:09,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 16:31:09,148 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_usbErr4ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-25 16:31:09,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:31:09,148 INFO L85 PathProgramCache]: Analyzing trace with hash 202299519, now seen corresponding path program 1 times [2023-08-25 16:31:09,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:31:09,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960751673] [2023-08-25 16:31:09,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:31:09,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:31:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:31:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 16:31:09,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:31:09,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960751673] [2023-08-25 16:31:09,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960751673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:31:09,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:31:09,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 16:31:09,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524831449] [2023-08-25 16:31:09,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:31:09,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 16:31:09,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:31:09,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 16:31:09,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 16:31:09,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 863 [2023-08-25 16:31:09,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 357 flow. Second operand has 3 states, 3 states have (on average 419.3333333333333) internal successors, (1258), 3 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:09,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:31:09,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 863 [2023-08-25 16:31:09,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:31:09,546 INFO L124 PetriNetUnfolderBase]: 2362/4435 cut-off events. [2023-08-25 16:31:09,546 INFO L125 PetriNetUnfolderBase]: For 1983/2232 co-relation queries the response was YES. [2023-08-25 16:31:09,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11205 conditions, 4435 events. 2362/4435 cut-off events. For 1983/2232 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 30905 event pairs, 860 based on Foata normal form. 94/3662 useless extension candidates. Maximal degree in co-relation 11194. Up to 1826 conditions per place. [2023-08-25 16:31:09,575 INFO L140 encePairwiseOnDemand]: 861/863 looper letters, 72 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-08-25 16:31:09,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 115 transitions, 614 flow [2023-08-25 16:31:09,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 16:31:09,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 16:31:09,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1305 transitions. [2023-08-25 16:31:09,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040556199304751 [2023-08-25 16:31:09,580 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1305 transitions. [2023-08-25 16:31:09,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1305 transitions. [2023-08-25 16:31:09,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:31:09,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1305 transitions. [2023-08-25 16:31:09,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 435.0) internal successors, (1305), 3 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) [2023-08-25 16:31:09,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:09,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:09,586 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 357 flow. Second operand 3 states and 1305 transitions. [2023-08-25 16:31:09,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 115 transitions, 614 flow [2023-08-25 16:31:09,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 115 transitions, 607 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 16:31:09,592 INFO L231 Difference]: Finished difference. Result has 74 places, 87 transitions, 358 flow [2023-08-25 16:31:09,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=74, PETRI_TRANSITIONS=87} [2023-08-25 16:31:09,593 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -2 predicate places. [2023-08-25 16:31:09,594 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 87 transitions, 358 flow [2023-08-25 16:31:09,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 419.3333333333333) internal successors, (1258), 3 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:09,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:31:09,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 16:31:09,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 16:31:09,594 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread_usbErr10ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-25 16:31:09,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:31:09,595 INFO L85 PathProgramCache]: Analyzing trace with hash -75247114, now seen corresponding path program 1 times [2023-08-25 16:31:09,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:31:09,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071347867] [2023-08-25 16:31:09,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:31:09,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:31:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:31:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 16:31:09,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:31:09,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071347867] [2023-08-25 16:31:09,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071347867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:31:09,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:31:09,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 16:31:09,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971538461] [2023-08-25 16:31:09,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:31:09,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 16:31:09,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:31:09,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 16:31:09,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 16:31:09,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 863 [2023-08-25 16:31:09,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 87 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 420.0) internal successors, (1260), 3 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:09,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:31:09,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 863 [2023-08-25 16:31:09,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:31:10,025 INFO L124 PetriNetUnfolderBase]: 2392/4590 cut-off events. [2023-08-25 16:31:10,026 INFO L125 PetriNetUnfolderBase]: For 2270/2479 co-relation queries the response was YES. [2023-08-25 16:31:10,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11604 conditions, 4590 events. 2392/4590 cut-off events. For 2270/2479 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 32335 event pairs, 819 based on Foata normal form. 70/3809 useless extension candidates. Maximal degree in co-relation 11592. Up to 1798 conditions per place. [2023-08-25 16:31:10,051 INFO L140 encePairwiseOnDemand]: 860/863 looper letters, 76 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2023-08-25 16:31:10,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 120 transitions, 647 flow [2023-08-25 16:31:10,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 16:31:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 16:31:10,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1310 transitions. [2023-08-25 16:31:10,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059868675164156 [2023-08-25 16:31:10,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1310 transitions. [2023-08-25 16:31:10,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1310 transitions. [2023-08-25 16:31:10,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:31:10,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1310 transitions. [2023-08-25 16:31:10,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:10,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:10,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:10,062 INFO L175 Difference]: Start difference. First operand has 74 places, 87 transitions, 358 flow. Second operand 3 states and 1310 transitions. [2023-08-25 16:31:10,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 120 transitions, 647 flow [2023-08-25 16:31:10,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 120 transitions, 644 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 16:31:10,067 INFO L231 Difference]: Finished difference. Result has 77 places, 89 transitions, 382 flow [2023-08-25 16:31:10,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=382, PETRI_PLACES=77, PETRI_TRANSITIONS=89} [2023-08-25 16:31:10,068 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2023-08-25 16:31:10,068 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 89 transitions, 382 flow [2023-08-25 16:31:10,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 420.0) internal successors, (1260), 3 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:10,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:31:10,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 16:31:10,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 16:31:10,069 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread_ath9kErr2ASSERT_VIOLATIONASSERT === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-25 16:31:10,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:31:10,069 INFO L85 PathProgramCache]: Analyzing trace with hash -887903320, now seen corresponding path program 1 times [2023-08-25 16:31:10,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:31:10,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992825474] [2023-08-25 16:31:10,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:31:10,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:31:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:31:10,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 16:31:10,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:31:10,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992825474] [2023-08-25 16:31:10,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992825474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:31:10,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:31:10,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 16:31:10,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99148802] [2023-08-25 16:31:10,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:31:10,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 16:31:10,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:31:10,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 16:31:10,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 16:31:10,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 863 [2023-08-25 16:31:10,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 89 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 406.6666666666667) internal successors, (1220), 3 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:10,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:31:10,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 863 [2023-08-25 16:31:10,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:31:10,543 INFO L124 PetriNetUnfolderBase]: 2355/4604 cut-off events. [2023-08-25 16:31:10,543 INFO L125 PetriNetUnfolderBase]: For 2682/2901 co-relation queries the response was YES. [2023-08-25 16:31:10,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11999 conditions, 4604 events. 2355/4604 cut-off events. For 2682/2901 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 32479 event pairs, 689 based on Foata normal form. 206/4036 useless extension candidates. Maximal degree in co-relation 11986. Up to 1712 conditions per place. [2023-08-25 16:31:10,566 INFO L140 encePairwiseOnDemand]: 854/863 looper letters, 70 selfloop transitions, 7 changer transitions 3/120 dead transitions. [2023-08-25 16:31:10,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 120 transitions, 677 flow [2023-08-25 16:31:10,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 16:31:10,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 16:31:10,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1275 transitions. [2023-08-25 16:31:10,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.492468134414832 [2023-08-25 16:31:10,570 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1275 transitions. [2023-08-25 16:31:10,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1275 transitions. [2023-08-25 16:31:10,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:31:10,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1275 transitions. [2023-08-25 16:31:10,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 425.0) internal successors, (1275), 3 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:10,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:10,576 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:10,577 INFO L175 Difference]: Start difference. First operand has 77 places, 89 transitions, 382 flow. Second operand 3 states and 1275 transitions. [2023-08-25 16:31:10,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 120 transitions, 677 flow [2023-08-25 16:31:10,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 120 transitions, 667 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 16:31:10,581 INFO L231 Difference]: Finished difference. Result has 79 places, 91 transitions, 430 flow [2023-08-25 16:31:10,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=430, PETRI_PLACES=79, PETRI_TRANSITIONS=91} [2023-08-25 16:31:10,582 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2023-08-25 16:31:10,582 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 91 transitions, 430 flow [2023-08-25 16:31:10,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 406.6666666666667) internal successors, (1220), 3 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:10,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:31:10,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 16:31:10,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 16:31:10,583 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_usbErr10ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-25 16:31:10,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:31:10,584 INFO L85 PathProgramCache]: Analyzing trace with hash 546980472, now seen corresponding path program 1 times [2023-08-25 16:31:10,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:31:10,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928839154] [2023-08-25 16:31:10,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:31:10,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:31:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:31:10,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 16:31:10,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:31:10,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928839154] [2023-08-25 16:31:10,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928839154] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:31:10,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:31:10,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 16:31:10,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635588778] [2023-08-25 16:31:10,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:31:10,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 16:31:10,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:31:10,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 16:31:10,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 16:31:10,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 863 [2023-08-25 16:31:10,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 91 transitions, 430 flow. Second operand has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:10,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:31:10,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 863 [2023-08-25 16:31:10,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:31:10,746 INFO L124 PetriNetUnfolderBase]: 449/931 cut-off events. [2023-08-25 16:31:10,746 INFO L125 PetriNetUnfolderBase]: For 699/718 co-relation queries the response was YES. [2023-08-25 16:31:10,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 931 events. 449/931 cut-off events. For 699/718 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4544 event pairs, 136 based on Foata normal form. 68/824 useless extension candidates. Maximal degree in co-relation 2281. Up to 377 conditions per place. [2023-08-25 16:31:10,751 INFO L140 encePairwiseOnDemand]: 859/863 looper letters, 42 selfloop transitions, 3 changer transitions 1/68 dead transitions. [2023-08-25 16:31:10,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 360 flow [2023-08-25 16:31:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 16:31:10,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 16:31:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1252 transitions. [2023-08-25 16:31:10,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835843955195056 [2023-08-25 16:31:10,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1252 transitions. [2023-08-25 16:31:10,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1252 transitions. [2023-08-25 16:31:10,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:31:10,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1252 transitions. [2023-08-25 16:31:10,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 417.3333333333333) internal successors, (1252), 3 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:10,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:10,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:10,762 INFO L175 Difference]: Start difference. First operand has 79 places, 91 transitions, 430 flow. Second operand 3 states and 1252 transitions. [2023-08-25 16:31:10,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 360 flow [2023-08-25 16:31:10,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 285 flow, removed 18 selfloop flow, removed 11 redundant places. [2023-08-25 16:31:10,766 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 173 flow [2023-08-25 16:31:10,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-08-25 16:31:10,767 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -14 predicate places. [2023-08-25 16:31:10,767 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 173 flow [2023-08-25 16:31:10,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:10,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:31:10,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 16:31:10,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-25 16:31:10,768 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_usbErr4ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-25 16:31:10,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:31:10,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1220218268, now seen corresponding path program 1 times [2023-08-25 16:31:10,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:31:10,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180274237] [2023-08-25 16:31:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:31:10,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:31:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:31:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 16:31:11,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:31:11,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180274237] [2023-08-25 16:31:11,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180274237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:31:11,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:31:11,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 16:31:11,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390972045] [2023-08-25 16:31:11,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:31:11,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 16:31:11,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:31:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 16:31:11,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 16:31:11,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 863 [2023-08-25 16:31:11,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 399.1666666666667) internal successors, (2395), 6 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:11,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:31:11,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 863 [2023-08-25 16:31:11,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:31:11,537 INFO L124 PetriNetUnfolderBase]: 2743/4130 cut-off events. [2023-08-25 16:31:11,537 INFO L125 PetriNetUnfolderBase]: For 1293/1293 co-relation queries the response was YES. [2023-08-25 16:31:11,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9493 conditions, 4130 events. 2743/4130 cut-off events. For 1293/1293 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 19891 event pairs, 779 based on Foata normal form. 0/3512 useless extension candidates. Maximal degree in co-relation 9483. Up to 2255 conditions per place. [2023-08-25 16:31:11,556 INFO L140 encePairwiseOnDemand]: 858/863 looper letters, 109 selfloop transitions, 4 changer transitions 5/130 dead transitions. [2023-08-25 16:31:11,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 130 transitions, 596 flow [2023-08-25 16:31:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 16:31:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 16:31:11,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2495 transitions. [2023-08-25 16:31:11,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818462726921591 [2023-08-25 16:31:11,563 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2495 transitions. [2023-08-25 16:31:11,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2495 transitions. [2023-08-25 16:31:11,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:31:11,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2495 transitions. [2023-08-25 16:31:11,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 415.8333333333333) internal successors, (2495), 6 states have internal predecessors, (2495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:11,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 863.0) internal successors, (6041), 7 states have internal predecessors, (6041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:11,577 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 863.0) internal successors, (6041), 7 states have internal predecessors, (6041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:11,578 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 173 flow. Second operand 6 states and 2495 transitions. [2023-08-25 16:31:11,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 130 transitions, 596 flow [2023-08-25 16:31:11,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 130 transitions, 582 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 16:31:11,584 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 191 flow [2023-08-25 16:31:11,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2023-08-25 16:31:11,585 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -9 predicate places. [2023-08-25 16:31:11,585 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 191 flow [2023-08-25 16:31:11,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 399.1666666666667) internal successors, (2395), 6 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:11,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:31:11,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 16:31:11,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-25 16:31:11,587 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-25 16:31:11,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:31:11,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2500966, now seen corresponding path program 1 times [2023-08-25 16:31:11,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:31:11,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24368826] [2023-08-25 16:31:11,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:31:11,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:31:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:31:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 16:31:11,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:31:11,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24368826] [2023-08-25 16:31:11,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24368826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:31:11,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:31:11,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 16:31:11,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619826629] [2023-08-25 16:31:11,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:31:11,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 16:31:11,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:31:11,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 16:31:11,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 16:31:11,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 863 [2023-08-25 16:31:11,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:11,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:31:11,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 863 [2023-08-25 16:31:11,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:31:11,775 INFO L124 PetriNetUnfolderBase]: 704/1318 cut-off events. [2023-08-25 16:31:11,775 INFO L125 PetriNetUnfolderBase]: For 349/360 co-relation queries the response was YES. [2023-08-25 16:31:11,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 1318 events. 704/1318 cut-off events. For 349/360 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5842 event pairs, 470 based on Foata normal form. 0/1213 useless extension candidates. Maximal degree in co-relation 3084. Up to 1104 conditions per place. [2023-08-25 16:31:11,782 INFO L140 encePairwiseOnDemand]: 860/863 looper letters, 41 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-25 16:31:11,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 275 flow [2023-08-25 16:31:11,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 16:31:11,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 16:31:11,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1149 transitions. [2023-08-25 16:31:11,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44380069524913096 [2023-08-25 16:31:11,785 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1149 transitions. [2023-08-25 16:31:11,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1149 transitions. [2023-08-25 16:31:11,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:31:11,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1149 transitions. [2023-08-25 16:31:11,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 383.0) internal successors, (1149), 3 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:11,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:11,792 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:11,792 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 191 flow. Second operand 3 states and 1149 transitions. [2023-08-25 16:31:11,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 275 flow [2023-08-25 16:31:11,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 58 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 16:31:11,795 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 193 flow [2023-08-25 16:31:11,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2023-08-25 16:31:11,797 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -9 predicate places. [2023-08-25 16:31:11,797 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 193 flow [2023-08-25 16:31:11,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:11,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 16:31:11,797 INFO L208 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] [2023-08-25 16:31:11,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-25 16:31:11,797 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-25 16:31:11,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 16:31:11,798 INFO L85 PathProgramCache]: Analyzing trace with hash -631992276, now seen corresponding path program 1 times [2023-08-25 16:31:11,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 16:31:11,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912719638] [2023-08-25 16:31:11,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 16:31:11,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 16:31:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 16:31:11,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 16:31:11,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 16:31:11,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912719638] [2023-08-25 16:31:11,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912719638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 16:31:11,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 16:31:11,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 16:31:11,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111578419] [2023-08-25 16:31:11,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 16:31:11,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 16:31:11,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 16:31:11,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 16:31:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 16:31:11,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 863 [2023-08-25 16:31:11,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:11,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 16:31:11,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 863 [2023-08-25 16:31:11,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 16:31:12,018 INFO L124 PetriNetUnfolderBase]: 538/1052 cut-off events. [2023-08-25 16:31:12,018 INFO L125 PetriNetUnfolderBase]: For 239/246 co-relation queries the response was YES. [2023-08-25 16:31:12,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 1052 events. 538/1052 cut-off events. For 239/246 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4839 event pairs, 322 based on Foata normal form. 4/939 useless extension candidates. Maximal degree in co-relation 2434. Up to 802 conditions per place. [2023-08-25 16:31:12,022 INFO L140 encePairwiseOnDemand]: 861/863 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2023-08-25 16:31:12,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 57 transitions, 259 flow [2023-08-25 16:31:12,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 16:31:12,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 16:31:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1242 transitions. [2023-08-25 16:31:12,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797219003476246 [2023-08-25 16:31:12,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1242 transitions. [2023-08-25 16:31:12,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1242 transitions. [2023-08-25 16:31:12,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 16:31:12,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1242 transitions. [2023-08-25 16:31:12,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:12,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:12,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:12,033 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 193 flow. Second operand 3 states and 1242 transitions. [2023-08-25 16:31:12,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 57 transitions, 259 flow [2023-08-25 16:31:12,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 57 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 16:31:12,036 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2023-08-25 16:31:12,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2023-08-25 16:31:12,036 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -10 predicate places. [2023-08-25 16:31:12,036 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2023-08-25 16:31:12,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 16:31:12,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE (41 of 42 remaining) [2023-08-25 16:31:12,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr12ASSERT_VIOLATIONASSERT (40 of 42 remaining) [2023-08-25 16:31:12,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONDATA_RACE (39 of 42 remaining) [2023-08-25 16:31:12,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (38 of 42 remaining) [2023-08-25 16:31:12,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr11ASSERT_VIOLATIONDATA_RACE (37 of 42 remaining) [2023-08-25 16:31:12,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE (36 of 42 remaining) [2023-08-25 16:31:12,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4ASSERT_VIOLATIONDATA_RACE (35 of 42 remaining) [2023-08-25 16:31:12,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONDATA_RACE (34 of 42 remaining) [2023-08-25 16:31:12,037 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3ASSERT_VIOLATIONDATA_RACE (33 of 42 remaining) [2023-08-25 16:31:12,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONASSERT (32 of 42 remaining) [2023-08-25 16:31:12,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE (31 of 42 remaining) [2023-08-25 16:31:12,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2ASSERT_VIOLATIONDATA_RACE (30 of 42 remaining) [2023-08-25 16:31:12,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE (29 of 42 remaining) [2023-08-25 16:31:12,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (28 of 42 remaining) [2023-08-25 16:31:12,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONDATA_RACE (27 of 42 remaining) [2023-08-25 16:31:12,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2ASSERT_VIOLATIONDATA_RACE (26 of 42 remaining) [2023-08-25 16:31:12,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr8ASSERT_VIOLATIONASSERT (25 of 42 remaining) [2023-08-25 16:31:12,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (24 of 42 remaining) [2023-08-25 16:31:12,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr2ASSERT_VIOLATIONASSERT (23 of 42 remaining) [2023-08-25 16:31:12,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONDATA_RACE (22 of 42 remaining) [2023-08-25 16:31:12,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONDATA_RACE (21 of 42 remaining) [2023-08-25 16:31:12,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4ASSERT_VIOLATIONDATA_RACE (20 of 42 remaining) [2023-08-25 16:31:12,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (19 of 42 remaining) [2023-08-25 16:31:12,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5ASSERT_VIOLATIONDATA_RACE (18 of 42 remaining) [2023-08-25 16:31:12,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONDATA_RACE (17 of 42 remaining) [2023-08-25 16:31:12,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (16 of 42 remaining) [2023-08-25 16:31:12,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 42 remaining) [2023-08-25 16:31:12,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr9ASSERT_VIOLATIONDATA_RACE (14 of 42 remaining) [2023-08-25 16:31:12,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONDATA_RACE (13 of 42 remaining) [2023-08-25 16:31:12,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr11ASSERT_VIOLATIONDATA_RACE (12 of 42 remaining) [2023-08-25 16:31:12,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr2ASSERT_VIOLATIONASSERT (11 of 42 remaining) [2023-08-25 16:31:12,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr12ASSERT_VIOLATIONASSERT (10 of 42 remaining) [2023-08-25 16:31:12,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONDATA_RACE (9 of 42 remaining) [2023-08-25 16:31:12,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (8 of 42 remaining) [2023-08-25 16:31:12,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr8ASSERT_VIOLATIONASSERT (7 of 42 remaining) [2023-08-25 16:31:12,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (6 of 42 remaining) [2023-08-25 16:31:12,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr10ASSERT_VIOLATIONDATA_RACE (5 of 42 remaining) [2023-08-25 16:31:12,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr10ASSERT_VIOLATIONDATA_RACE (4 of 42 remaining) [2023-08-25 16:31:12,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr9ASSERT_VIOLATIONDATA_RACE (3 of 42 remaining) [2023-08-25 16:31:12,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5ASSERT_VIOLATIONDATA_RACE (2 of 42 remaining) [2023-08-25 16:31:12,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3ASSERT_VIOLATIONDATA_RACE (1 of 42 remaining) [2023-08-25 16:31:12,041 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (0 of 42 remaining) [2023-08-25 16:31:12,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-25 16:31:12,041 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 16:31:12,042 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (2/2) [2023-08-25 16:31:12,045 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 16:31:12,045 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 16:31:12,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 04:31:12 BasicIcfg [2023-08-25 16:31:12,049 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 16:31:12,050 INFO L158 Benchmark]: Toolchain (without parser) took 21622.24ms. Allocated memory was 348.1MB in the beginning and 736.1MB in the end (delta: 388.0MB). Free memory was 322.2MB in the beginning and 389.6MB in the end (delta: -67.5MB). Peak memory consumption was 321.4MB. Max. memory is 16.0GB. [2023-08-25 16:31:12,050 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 348.1MB. Free memory was 325.4MB in the beginning and 325.4MB in the end (delta: 84.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 16:31:12,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 971.15ms. Allocated memory is still 348.1MB. Free memory was 321.8MB in the beginning and 313.0MB in the end (delta: 8.9MB). Peak memory consumption was 57.3MB. Max. memory is 16.0GB. [2023-08-25 16:31:12,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.14ms. Allocated memory is still 348.1MB. Free memory was 313.0MB in the beginning and 308.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-25 16:31:12,051 INFO L158 Benchmark]: Boogie Preprocessor took 56.64ms. Allocated memory is still 348.1MB. Free memory was 308.8MB in the beginning and 305.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 16:31:12,051 INFO L158 Benchmark]: RCFGBuilder took 562.22ms. Allocated memory is still 348.1MB. Free memory was 305.6MB in the beginning and 274.7MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-25 16:31:12,051 INFO L158 Benchmark]: TraceAbstraction took 19949.32ms. Allocated memory was 348.1MB in the beginning and 736.1MB in the end (delta: 388.0MB). Free memory was 274.7MB in the beginning and 389.6MB in the end (delta: -114.9MB). Peak memory consumption was 274.6MB. Max. memory is 16.0GB. [2023-08-25 16:31:12,053 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 348.1MB. Free memory was 325.4MB in the beginning and 325.4MB in the end (delta: 84.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 971.15ms. Allocated memory is still 348.1MB. Free memory was 321.8MB in the beginning and 313.0MB in the end (delta: 8.9MB). Peak memory consumption was 57.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 75.14ms. Allocated memory is still 348.1MB. Free memory was 313.0MB in the beginning and 308.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 56.64ms. Allocated memory is still 348.1MB. Free memory was 308.8MB in the beginning and 305.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 562.22ms. Allocated memory is still 348.1MB. Free memory was 305.6MB in the beginning and 274.7MB in the end (delta: 30.9MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * TraceAbstraction took 19949.32ms. Allocated memory was 348.1MB in the beginning and 736.1MB in the end (delta: 388.0MB). Free memory was 274.7MB in the beginning and 389.6MB in the end (delta: -114.9MB). Peak memory consumption was 274.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 729]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [729] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.1s, 267 PlacesBefore, 64 PlacesAfterwards, 287 TransitionsBefore, 68 TransitionsAfterwards, 18732 CoEnabledTransitionPairs, 7 FixpointIterations, 55 TrivialSequentialCompositions, 215 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 53 ConcurrentYvCompositions, 16 ChoiceCompositions, 347 TotalNumberOfCompositions, 48134 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 23502, independent: 22866, independent conditional: 0, independent unconditional: 22866, dependent: 636, dependent conditional: 0, dependent unconditional: 636, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11146, independent: 11043, independent conditional: 0, independent unconditional: 11043, dependent: 103, dependent conditional: 0, dependent unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 23502, independent: 11823, independent conditional: 0, independent unconditional: 11823, dependent: 533, dependent conditional: 0, dependent unconditional: 533, unknown: 11146, unknown conditional: 0, unknown unconditional: 11146] , Statistics on independence cache: Total cache size (in pairs): 479, Positive cache size: 437, Positive conditional cache size: 0, Positive unconditional cache size: 437, Negative cache size: 42, Negative conditional cache size: 0, Negative unconditional cache size: 42, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.5s, 296 PlacesBefore, 76 PlacesAfterwards, 319 TransitionsBefore, 81 TransitionsAfterwards, 18942 CoEnabledTransitionPairs, 8 FixpointIterations, 102 TrivialSequentialCompositions, 222 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 56 ConcurrentYvCompositions, 18 ChoiceCompositions, 404 TotalNumberOfCompositions, 51683 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 29453, independent: 28735, independent conditional: 0, independent unconditional: 28735, dependent: 718, dependent conditional: 0, dependent unconditional: 718, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11395, independent: 11286, independent conditional: 0, independent unconditional: 11286, dependent: 109, dependent conditional: 0, dependent unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 29453, independent: 17449, independent conditional: 0, independent unconditional: 17449, dependent: 609, dependent conditional: 0, dependent unconditional: 609, unknown: 11395, unknown conditional: 0, unknown unconditional: 11395] , Statistics on independence cache: Total cache size (in pairs): 657, Positive cache size: 612, Positive conditional cache size: 0, Positive unconditional cache size: 612, Negative cache size: 45, Negative conditional cache size: 0, Negative unconditional cache size: 45, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1699]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 1760]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1792]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1772]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1700]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1725]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1759]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1756]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 1752]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1783]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1748]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 1778]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 1743]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 1758]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 1777]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1764]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1793]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1784]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1771]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 1790]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 462 locations, 45 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.0s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=153occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 462 locations, 45 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.8s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 372 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 372 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1532 IncrementalHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 61 mSDtfsCounter, 1532 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=430occurred in iteration=11, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 151 ConstructedInterpolants, 0 QuantifiedInterpolants, 369 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-25 16:31:12,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...