/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 PROGRAM_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 [2023-08-26 06:09:43,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 06:09:43,254 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 [2023-08-26 06:09:43,258 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 06:09:43,259 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 06:09:43,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 06:09:43,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 06:09:43,283 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 06:09:43,283 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 06:09:43,283 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 06:09:43,284 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 06:09:43,284 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 06:09:43,284 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 06:09:43,285 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 06:09:43,285 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 06:09:43,285 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 06:09:43,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 06:09:43,286 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 06:09:43,286 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 06:09:43,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 06:09:43,287 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 06:09:43,294 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 06:09:43,294 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 06:09:43,295 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 06:09:43,298 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 06:09:43,299 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 06:09:43,299 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 06:09:43,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:09:43,300 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 06:09:43,300 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 06:09:43,301 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 06:09:43,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 06:09:43,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 06:09:43,302 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 06:09:43,302 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 06:09:43,302 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 06:09:43,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 06:09:43,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 06:09:43,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 06:09:43,654 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 06:09:43,655 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 06:09:43,656 INFO L431 ainManager$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 [2023-08-26 06:09:44,929 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 06:09:45,260 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 06:09:45,261 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i [2023-08-26 06:09:45,286 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ebea461/d8f3c9dd1d7443d89917d158eb201620/FLAGbb2c04121 [2023-08-26 06:09:45,300 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97ebea461/d8f3c9dd1d7443d89917d158eb201620 [2023-08-26 06:09:45,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 06:09:45,306 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 06:09:45,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 06:09:45,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 06:09:45,312 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 06:09:45,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:09:45" (1/1) ... [2023-08-26 06:09:45,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d214ba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:09:45, skipping insertion in model container [2023-08-26 06:09:45,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:09:45" (1/1) ... [2023-08-26 06:09:45,355 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 06:09:46,149 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:09:46,164 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 06:09:46,191 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-26 06:09:46,192 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-26 06:09:46,198 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [729] [2023-08-26 06:09:46,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 06:09:46,323 INFO L206 MainTranslator]: Completed translation [2023-08-26 06:09:46,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:09:46 WrapperNode [2023-08-26 06:09:46,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 06:09:46,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 06:09:46,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 06:09:46,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 06:09:46,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:09:46" (1/1) ... [2023-08-26 06:09:46,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:09:46" (1/1) ... [2023-08-26 06:09:46,392 INFO L138 Inliner]: procedures = 486, calls = 44, calls flagged for inlining = 16, calls inlined = 21, statements flattened = 287 [2023-08-26 06:09:46,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 06:09:46,394 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 06:09:46,394 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 06:09:46,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 06:09:46,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:09:46" (1/1) ... [2023-08-26 06:09:46,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:09:46" (1/1) ... [2023-08-26 06:09:46,407 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:09:46" (1/1) ... [2023-08-26 06:09:46,407 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:09:46" (1/1) ... [2023-08-26 06:09:46,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:09:46" (1/1) ... [2023-08-26 06:09:46,432 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:09:46" (1/1) ... [2023-08-26 06:09:46,436 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:09:46" (1/1) ... [2023-08-26 06:09:46,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:09:46" (1/1) ... [2023-08-26 06:09:46,447 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 06:09:46,448 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 06:09:46,448 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 06:09:46,449 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 06:09:46,449 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:09:46" (1/1) ... [2023-08-26 06:09:46,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 06:09:46,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 06:09:46,481 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) [2023-08-26 06:09:46,483 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 [2023-08-26 06:09:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2023-08-26 06:09:46,507 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2023-08-26 06:09:46,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 06:09:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 06:09:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2023-08-26 06:09:46,508 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2023-08-26 06:09:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 06:09:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 06:09:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-26 06:09:46,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 06:09:46,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 06:09:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 06:09:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 06:09:46,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 06:09:46,510 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 06:09:46,763 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 06:09:46,764 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 06:09:47,067 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 06:09:47,082 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 06:09:47,082 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-26 06:09:47,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:09:47 BoogieIcfgContainer [2023-08-26 06:09:47,084 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 06:09:47,086 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 06:09:47,086 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 06:09:47,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 06:09:47,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:09:45" (1/3) ... [2023-08-26 06:09:47,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9efd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:09:47, skipping insertion in model container [2023-08-26 06:09:47,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:09:46" (2/3) ... [2023-08-26 06:09:47,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9efd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:09:47, skipping insertion in model container [2023-08-26 06:09:47,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:09:47" (3/3) ... [2023-08-26 06:09:47,091 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2023-08-26 06:09:47,110 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 06:09:47,110 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-26 06:09:47,110 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 06:09:47,233 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-26 06:09:47,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 421 places, 459 transitions, 948 flow [2023-08-26 06:09:47,446 INFO L124 PetriNetUnfolderBase]: 41/467 cut-off events. [2023-08-26 06:09:47,447 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 06:09:47,456 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. [2023-08-26 06:09:47,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 421 places, 459 transitions, 948 flow [2023-08-26 06:09:47,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 319 transitions, 655 flow [2023-08-26 06:09:47,473 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 06:09:47,481 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 296 places, 319 transitions, 655 flow [2023-08-26 06:09:47,483 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 296 places, 319 transitions, 655 flow [2023-08-26 06:09:47,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 319 transitions, 655 flow [2023-08-26 06:09:47,557 INFO L124 PetriNetUnfolderBase]: 41/467 cut-off events. [2023-08-26 06:09:47,558 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 06:09:47,562 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. [2023-08-26 06:09:47,574 INFO L119 LiptonReduction]: Number of co-enabled transitions 18942 [2023-08-26 06:09:55,018 INFO L134 LiptonReduction]: Checked pairs total: 60318 [2023-08-26 06:09:55,018 INFO L136 LiptonReduction]: Total number of compositions: 414 [2023-08-26 06:09:55,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 06:09:55,038 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;@5eca6160, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 06:09:55,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-08-26 06:09:55,039 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 06:09:55,039 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 06:09:55,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 06:09:55,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:09:55,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 06:09:55,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-26 06:09:55,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:09:55,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1374, now seen corresponding path program 1 times [2023-08-26 06:09:55,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:09:55,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217945611] [2023-08-26 06:09:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:09:55,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:09:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:09:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:09:55,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:09:55,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217945611] [2023-08-26 06:09:55,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217945611] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:09:55,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:09:55,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 06:09:55,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597807738] [2023-08-26 06:09:55,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:09:55,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 06:09:55,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:09:55,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 06:09:55,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 06:09:55,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 873 [2023-08-26 06:09:55,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 181 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) [2023-08-26 06:09:55,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:09:55,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 873 [2023-08-26 06:09:55,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:09:55,569 INFO L124 PetriNetUnfolderBase]: 730/1396 cut-off events. [2023-08-26 06:09:55,569 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-08-26 06:09:55,572 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 104. Compared 7951 event pairs, 449 based on Foata normal form. 77/885 useless extension candidates. Maximal degree in co-relation 2296. Up to 1077 conditions per place. [2023-08-26 06:09:55,580 INFO L140 encePairwiseOnDemand]: 855/873 looper letters, 35 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2023-08-26 06:09:55,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 215 flow [2023-08-26 06:09:55,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 06:09:55,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 06:09:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 895 transitions. [2023-08-26 06:09:55,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126002290950744 [2023-08-26 06:09:55,600 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 895 transitions. [2023-08-26 06:09:55,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 895 transitions. [2023-08-26 06:09:55,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:09:55,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 895 transitions. [2023-08-26 06:09:55,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 447.5) internal successors, (895), 2 states have internal predecessors, (895), 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) [2023-08-26 06:09:55,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 873.0) internal successors, (2619), 3 states have internal predecessors, (2619), 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) [2023-08-26 06:09:55,621 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 873.0) internal successors, (2619), 3 states have internal predecessors, (2619), 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) [2023-08-26 06:09:55,623 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 181 flow. Second operand 2 states and 895 transitions. [2023-08-26 06:09:55,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 215 flow [2023-08-26 06:09:55,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 64 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:09:55,631 INFO L231 Difference]: Finished difference. Result has 60 places, 64 transitions, 141 flow [2023-08-26 06:09:55,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, 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} [2023-08-26 06:09:55,636 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -16 predicate places. [2023-08-26 06:09:55,636 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 64 transitions, 141 flow [2023-08-26 06:09:55,637 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) [2023-08-26 06:09:55,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:09:55,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 06:09:55,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 06:09:55,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_usbErr10ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-26 06:09:55,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:09:55,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1834518236, now seen corresponding path program 1 times [2023-08-26 06:09:55,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:09:55,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068951796] [2023-08-26 06:09:55,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:09:55,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:09:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:09:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:09:55,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:09:55,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068951796] [2023-08-26 06:09:55,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068951796] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:09:55,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:09:55,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:09:55,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22618624] [2023-08-26 06:09:55,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:09:55,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:09:55,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:09:55,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:09:55,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:09:55,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 873 [2023-08-26 06:09:55,769 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) [2023-08-26 06:09:55,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:09:55,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 873 [2023-08-26 06:09:55,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:09:56,086 INFO L124 PetriNetUnfolderBase]: 1674/2670 cut-off events. [2023-08-26 06:09:56,086 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-26 06:09:56,089 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 13013 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. [2023-08-26 06:09:56,105 INFO L140 encePairwiseOnDemand]: 868/873 looper letters, 60 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2023-08-26 06:09:56,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 299 flow [2023-08-26 06:09:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:09:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:09:56,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1178 transitions. [2023-08-26 06:09:56,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44978999618174875 [2023-08-26 06:09:56,109 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1178 transitions. [2023-08-26 06:09:56,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1178 transitions. [2023-08-26 06:09:56,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:09:56,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1178 transitions. [2023-08-26 06:09:56,112 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) [2023-08-26 06:09:56,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:09:56,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:09:56,119 INFO L175 Difference]: Start difference. First operand has 60 places, 64 transitions, 141 flow. Second operand 3 states and 1178 transitions. [2023-08-26 06:09:56,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 299 flow [2023-08-26 06:09:56,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 299 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 06:09:56,122 INFO L231 Difference]: Finished difference. Result has 63 places, 67 transitions, 167 flow [2023-08-26 06:09:56,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, 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} [2023-08-26 06:09:56,124 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -13 predicate places. [2023-08-26 06:09:56,124 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 67 transitions, 167 flow [2023-08-26 06:09:56,125 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) [2023-08-26 06:09:56,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:09:56,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:09:56,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 06:09:56,125 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread_usbErr11ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-26 06:09:56,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:09:56,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2035253880, now seen corresponding path program 1 times [2023-08-26 06:09:56,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:09:56,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112321749] [2023-08-26 06:09:56,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:09:56,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:09:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:09:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:09:56,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:09:56,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112321749] [2023-08-26 06:09:56,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112321749] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:09:56,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:09:56,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:09:56,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225089770] [2023-08-26 06:09:56,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:09:56,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:09:56,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:09:56,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:09:56,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:09:56,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 873 [2023-08-26 06:09:56,184 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) [2023-08-26 06:09:56,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:09:56,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 873 [2023-08-26 06:09:56,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:09:56,467 INFO L124 PetriNetUnfolderBase]: 1714/2787 cut-off events. [2023-08-26 06:09:56,467 INFO L125 PetriNetUnfolderBase]: For 232/232 co-relation queries the response was YES. [2023-08-26 06:09:56,471 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 120. Compared 14052 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. [2023-08-26 06:09:56,487 INFO L140 encePairwiseOnDemand]: 859/873 looper letters, 79 selfloop transitions, 13 changer transitions 0/107 dead transitions. [2023-08-26 06:09:56,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 107 transitions, 449 flow [2023-08-26 06:09:56,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:09:56,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:09:56,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1209 transitions. [2023-08-26 06:09:56,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4616265750286369 [2023-08-26 06:09:56,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1209 transitions. [2023-08-26 06:09:56,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1209 transitions. [2023-08-26 06:09:56,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:09:56,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1209 transitions. [2023-08-26 06:09:56,494 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) [2023-08-26 06:09:56,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:09:56,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:09:56,501 INFO L175 Difference]: Start difference. First operand has 63 places, 67 transitions, 167 flow. Second operand 3 states and 1209 transitions. [2023-08-26 06:09:56,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 107 transitions, 449 flow [2023-08-26 06:09:56,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 107 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:09:56,505 INFO L231 Difference]: Finished difference. Result has 66 places, 77 transitions, 269 flow [2023-08-26 06:09:56,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, 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} [2023-08-26 06:09:56,506 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -10 predicate places. [2023-08-26 06:09:56,506 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 77 transitions, 269 flow [2023-08-26 06:09:56,507 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) [2023-08-26 06:09:56,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:09:56,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:09:56,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 06:09:56,507 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-26 06:09:56,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:09:56,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1577638128, now seen corresponding path program 1 times [2023-08-26 06:09:56,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:09:56,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165531052] [2023-08-26 06:09:56,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:09:56,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:09:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:09:56,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:09:56,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:09:56,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165531052] [2023-08-26 06:09:56,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165531052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:09:56,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:09:56,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:09:56,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888443908] [2023-08-26 06:09:56,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:09:56,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:09:56,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:09:56,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:09:56,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:09:56,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 873 [2023-08-26 06:09:56,590 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) [2023-08-26 06:09:56,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:09:56,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 873 [2023-08-26 06:09:56,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:09:56,824 INFO L124 PetriNetUnfolderBase]: 1069/1986 cut-off events. [2023-08-26 06:09:56,824 INFO L125 PetriNetUnfolderBase]: For 545/593 co-relation queries the response was YES. [2023-08-26 06:09:56,828 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 11535 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. [2023-08-26 06:09:56,839 INFO L140 encePairwiseOnDemand]: 870/873 looper letters, 37 selfloop transitions, 0 changer transitions 2/78 dead transitions. [2023-08-26 06:09:56,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 349 flow [2023-08-26 06:09:56,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:09:56,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:09:56,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1279 transitions. [2023-08-26 06:09:56,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48835433371515846 [2023-08-26 06:09:56,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1279 transitions. [2023-08-26 06:09:56,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1279 transitions. [2023-08-26 06:09:56,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:09:56,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1279 transitions. [2023-08-26 06:09:56,846 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) [2023-08-26 06:09:56,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:09:56,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:09:56,853 INFO L175 Difference]: Start difference. First operand has 66 places, 77 transitions, 269 flow. Second operand 3 states and 1279 transitions. [2023-08-26 06:09:56,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 349 flow [2023-08-26 06:09:56,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 323 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:09:56,858 INFO L231 Difference]: Finished difference. Result has 67 places, 76 transitions, 243 flow [2023-08-26 06:09:56,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, 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} [2023-08-26 06:09:56,859 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -9 predicate places. [2023-08-26 06:09:56,859 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 76 transitions, 243 flow [2023-08-26 06:09:56,860 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) [2023-08-26 06:09:56,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:09:56,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:09:56,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 06:09:56,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread_usbErr4ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-26 06:09:56,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:09:56,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1945351452, now seen corresponding path program 1 times [2023-08-26 06:09:56,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:09:56,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35150979] [2023-08-26 06:09:56,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:09:56,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:09:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:09:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:09:56,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:09:56,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35150979] [2023-08-26 06:09:56,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35150979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:09:56,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:09:56,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 06:09:56,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711172074] [2023-08-26 06:09:56,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:09:56,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:09:56,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:09:56,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:09:56,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:09:56,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 873 [2023-08-26 06:09:56,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 76 transitions, 243 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) [2023-08-26 06:09:56,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:09:56,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 873 [2023-08-26 06:09:56,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:09:57,115 INFO L124 PetriNetUnfolderBase]: 1083/2016 cut-off events. [2023-08-26 06:09:57,115 INFO L125 PetriNetUnfolderBase]: For 360/408 co-relation queries the response was YES. [2023-08-26 06:09:57,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4344 conditions, 2016 events. 1083/2016 cut-off events. For 360/408 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11800 event pairs, 487 based on Foata normal form. 4/1273 useless extension candidates. Maximal degree in co-relation 4336. Up to 1208 conditions per place. [2023-08-26 06:09:57,129 INFO L140 encePairwiseOnDemand]: 866/873 looper letters, 44 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2023-08-26 06:09:57,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 89 transitions, 373 flow [2023-08-26 06:09:57,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:09:57,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:09:57,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1257 transitions. [2023-08-26 06:09:57,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47995418098510884 [2023-08-26 06:09:57,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1257 transitions. [2023-08-26 06:09:57,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1257 transitions. [2023-08-26 06:09:57,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:09:57,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1257 transitions. [2023-08-26 06:09:57,136 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) [2023-08-26 06:09:57,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:09:57,142 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:09:57,142 INFO L175 Difference]: Start difference. First operand has 67 places, 76 transitions, 243 flow. Second operand 3 states and 1257 transitions. [2023-08-26 06:09:57,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 89 transitions, 373 flow [2023-08-26 06:09:57,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 89 transitions, 365 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-26 06:09:57,146 INFO L231 Difference]: Finished difference. Result has 69 places, 79 transitions, 277 flow [2023-08-26 06:09:57,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=69, PETRI_TRANSITIONS=79} [2023-08-26 06:09:57,147 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -7 predicate places. [2023-08-26 06:09:57,147 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 79 transitions, 277 flow [2023-08-26 06:09:57,148 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) [2023-08-26 06:09:57,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:09:57,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:09:57,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 06:09:57,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-26 06:09:57,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:09:57,149 INFO L85 PathProgramCache]: Analyzing trace with hash 981049137, now seen corresponding path program 1 times [2023-08-26 06:09:57,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:09:57,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518232861] [2023-08-26 06:09:57,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:09:57,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:09:57,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:09:57,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:09:57,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:09:57,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518232861] [2023-08-26 06:09:57,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518232861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:09:57,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:09:57,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:09:57,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222432442] [2023-08-26 06:09:57,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:09:57,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:09:57,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:09:57,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:09:57,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:09:57,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 873 [2023-08-26 06:09:57,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 79 transitions, 277 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) [2023-08-26 06:09:57,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:09:57,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 873 [2023-08-26 06:09:57,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:09:57,531 INFO L124 PetriNetUnfolderBase]: 1647/2697 cut-off events. [2023-08-26 06:09:57,531 INFO L125 PetriNetUnfolderBase]: For 710/716 co-relation queries the response was YES. [2023-08-26 06:09:57,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6536 conditions, 2697 events. 1647/2697 cut-off events. For 710/716 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 13575 event pairs, 928 based on Foata normal form. 0/1841 useless extension candidates. Maximal degree in co-relation 6527. Up to 2344 conditions per place. [2023-08-26 06:09:57,549 INFO L140 encePairwiseOnDemand]: 866/873 looper letters, 86 selfloop transitions, 10 changer transitions 0/111 dead transitions. [2023-08-26 06:09:57,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 111 transitions, 576 flow [2023-08-26 06:09:57,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:09:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:09:57,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1190 transitions. [2023-08-26 06:09:57,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4543718976708667 [2023-08-26 06:09:57,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1190 transitions. [2023-08-26 06:09:57,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1190 transitions. [2023-08-26 06:09:57,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:09:57,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1190 transitions. [2023-08-26 06:09:57,557 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) [2023-08-26 06:09:57,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:09:57,564 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:09:57,564 INFO L175 Difference]: Start difference. First operand has 69 places, 79 transitions, 277 flow. Second operand 3 states and 1190 transitions. [2023-08-26 06:09:57,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 111 transitions, 576 flow [2023-08-26 06:09:57,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 111 transitions, 556 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:09:57,568 INFO L231 Difference]: Finished difference. Result has 70 places, 85 transitions, 333 flow [2023-08-26 06:09:57,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=333, PETRI_PLACES=70, PETRI_TRANSITIONS=85} [2023-08-26 06:09:57,569 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -6 predicate places. [2023-08-26 06:09:57,570 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 85 transitions, 333 flow [2023-08-26 06:09:57,571 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) [2023-08-26 06:09:57,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:09:57,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:09:57,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 06:09:57,571 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread_usbErr12ASSERT_VIOLATIONASSERT === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-26 06:09:57,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:09:57,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1331640456, now seen corresponding path program 1 times [2023-08-26 06:09:57,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:09:57,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967762516] [2023-08-26 06:09:57,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:09:57,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:09:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:09:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:09:57,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:09:57,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967762516] [2023-08-26 06:09:57,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967762516] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:09:57,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:09:57,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:09:57,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655507481] [2023-08-26 06:09:57,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:09:57,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:09:57,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:09:57,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:09:57,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:09:57,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 873 [2023-08-26 06:09:57,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 85 transitions, 333 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) [2023-08-26 06:09:57,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:09:57,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 873 [2023-08-26 06:09:57,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:09:57,968 INFO L124 PetriNetUnfolderBase]: 1395/2617 cut-off events. [2023-08-26 06:09:57,968 INFO L125 PetriNetUnfolderBase]: For 1062/1178 co-relation queries the response was YES. [2023-08-26 06:09:57,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6180 conditions, 2617 events. 1395/2617 cut-off events. For 1062/1178 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 16494 event pairs, 529 based on Foata normal form. 43/1903 useless extension candidates. Maximal degree in co-relation 6170. Up to 1342 conditions per place. [2023-08-26 06:09:57,994 INFO L140 encePairwiseOnDemand]: 866/873 looper letters, 54 selfloop transitions, 6 changer transitions 0/102 dead transitions. [2023-08-26 06:09:57,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 102 transitions, 514 flow [2023-08-26 06:09:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:09:57,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:09:57,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1261 transitions. [2023-08-26 06:09:57,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-08-26 06:09:57,999 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1261 transitions. [2023-08-26 06:09:57,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1261 transitions. [2023-08-26 06:09:57,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:09:58,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1261 transitions. [2023-08-26 06:09:58,002 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) [2023-08-26 06:09:58,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:09:58,007 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:09:58,007 INFO L175 Difference]: Start difference. First operand has 70 places, 85 transitions, 333 flow. Second operand 3 states and 1261 transitions. [2023-08-26 06:09:58,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 102 transitions, 514 flow [2023-08-26 06:09:58,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 102 transitions, 502 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:09:58,013 INFO L231 Difference]: Finished difference. Result has 73 places, 88 transitions, 363 flow [2023-08-26 06:09:58,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, 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} [2023-08-26 06:09:58,014 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -3 predicate places. [2023-08-26 06:09:58,015 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 88 transitions, 363 flow [2023-08-26 06:09:58,016 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) [2023-08-26 06:09:58,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:09:58,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:09:58,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 06:09:58,019 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-26 06:09:58,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:09:58,019 INFO L85 PathProgramCache]: Analyzing trace with hash -323883395, now seen corresponding path program 1 times [2023-08-26 06:09:58,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:09:58,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79751276] [2023-08-26 06:09:58,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:09:58,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:09:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:09:58,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:09:58,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:09:58,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79751276] [2023-08-26 06:09:58,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79751276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:09:58,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:09:58,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 06:09:58,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629575084] [2023-08-26 06:09:58,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:09:58,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:09:58,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:09:58,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:09:58,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 06:09:58,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 399 out of 873 [2023-08-26 06:09:58,313 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) [2023-08-26 06:09:58,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:09:58,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 399 of 873 [2023-08-26 06:09:58,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:09:59,036 INFO L124 PetriNetUnfolderBase]: 4294/6760 cut-off events. [2023-08-26 06:09:59,037 INFO L125 PetriNetUnfolderBase]: For 3697/4208 co-relation queries the response was YES. [2023-08-26 06:09:59,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17152 conditions, 6760 events. 4294/6760 cut-off events. For 3697/4208 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 43099 event pairs, 1228 based on Foata normal form. 175/5889 useless extension candidates. Maximal degree in co-relation 17141. Up to 2788 conditions per place. [2023-08-26 06:09:59,087 INFO L140 encePairwiseOnDemand]: 868/873 looper letters, 205 selfloop transitions, 4 changer transitions 0/239 dead transitions. [2023-08-26 06:09:59,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 239 transitions, 1399 flow [2023-08-26 06:09:59,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:09:59,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:09:59,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2556 transitions. [2023-08-26 06:09:59,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879725085910653 [2023-08-26 06:09:59,094 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2556 transitions. [2023-08-26 06:09:59,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2556 transitions. [2023-08-26 06:09:59,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:09:59,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2556 transitions. [2023-08-26 06:09:59,100 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) [2023-08-26 06:09:59,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 873.0) internal successors, (6111), 7 states have internal predecessors, (6111), 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) [2023-08-26 06:09:59,116 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 873.0) internal successors, (6111), 7 states have internal predecessors, (6111), 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) [2023-08-26 06:09:59,116 INFO L175 Difference]: Start difference. First operand has 73 places, 88 transitions, 363 flow. Second operand 6 states and 2556 transitions. [2023-08-26 06:09:59,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 239 transitions, 1399 flow [2023-08-26 06:09:59,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 239 transitions, 1347 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:09:59,129 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 357 flow [2023-08-26 06:09:59,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, 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} [2023-08-26 06:09:59,130 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2023-08-26 06:09:59,130 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 357 flow [2023-08-26 06:09:59,131 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) [2023-08-26 06:09:59,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:09:59,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:09:59,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 06:09:59,132 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread_usbErr4ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-26 06:09:59,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:09:59,132 INFO L85 PathProgramCache]: Analyzing trace with hash 68835331, now seen corresponding path program 1 times [2023-08-26 06:09:59,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:09:59,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575560262] [2023-08-26 06:09:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:09:59,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:09:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:09:59,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:09:59,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:09:59,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575560262] [2023-08-26 06:09:59,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575560262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:09:59,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:09:59,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 06:09:59,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880965268] [2023-08-26 06:09:59,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:09:59,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:09:59,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:09:59,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:09:59,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:09:59,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 873 [2023-08-26 06:09:59,195 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) [2023-08-26 06:09:59,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:09:59,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 873 [2023-08-26 06:09:59,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:09:59,573 INFO L124 PetriNetUnfolderBase]: 2395/4489 cut-off events. [2023-08-26 06:09:59,573 INFO L125 PetriNetUnfolderBase]: For 1998/2227 co-relation queries the response was YES. [2023-08-26 06:09:59,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11354 conditions, 4489 events. 2395/4489 cut-off events. For 1998/2227 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 31711 event pairs, 886 based on Foata normal form. 102/3736 useless extension candidates. Maximal degree in co-relation 11343. Up to 1822 conditions per place. [2023-08-26 06:09:59,598 INFO L140 encePairwiseOnDemand]: 870/873 looper letters, 71 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2023-08-26 06:09:59,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 115 transitions, 614 flow [2023-08-26 06:09:59,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:09:59,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:09:59,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1305 transitions. [2023-08-26 06:09:59,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49828178694158076 [2023-08-26 06:09:59,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1305 transitions. [2023-08-26 06:09:59,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1305 transitions. [2023-08-26 06:09:59,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:09:59,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1305 transitions. [2023-08-26 06:09:59,607 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) [2023-08-26 06:09:59,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:09:59,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:09:59,612 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 357 flow. Second operand 3 states and 1305 transitions. [2023-08-26 06:09:59,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 115 transitions, 614 flow [2023-08-26 06:09:59,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 115 transitions, 607 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 06:09:59,617 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 370 flow [2023-08-26 06:09:59,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, 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=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2023-08-26 06:09:59,618 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2023-08-26 06:09:59,618 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 370 flow [2023-08-26 06:09:59,618 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) [2023-08-26 06:09:59,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:09:59,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:09:59,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 06:09:59,619 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread_usbErr10ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-26 06:09:59,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:09:59,619 INFO L85 PathProgramCache]: Analyzing trace with hash -318050123, now seen corresponding path program 1 times [2023-08-26 06:09:59,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:09:59,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235851078] [2023-08-26 06:09:59,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:09:59,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:09:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:09:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:09:59,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:09:59,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235851078] [2023-08-26 06:09:59,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235851078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:09:59,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:09:59,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 06:09:59,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470522917] [2023-08-26 06:09:59,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:09:59,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:09:59,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:09:59,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:09:59,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:09:59,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 873 [2023-08-26 06:09:59,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 370 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) [2023-08-26 06:09:59,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:09:59,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 873 [2023-08-26 06:09:59,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:10:00,048 INFO L124 PetriNetUnfolderBase]: 2420/4637 cut-off events. [2023-08-26 06:10:00,048 INFO L125 PetriNetUnfolderBase]: For 2409/2602 co-relation queries the response was YES. [2023-08-26 06:10:00,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11792 conditions, 4637 events. 2420/4637 cut-off events. For 2409/2602 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 32716 event pairs, 835 based on Foata normal form. 70/3863 useless extension candidates. Maximal degree in co-relation 11780. Up to 1818 conditions per place. [2023-08-26 06:10:00,076 INFO L140 encePairwiseOnDemand]: 870/873 looper letters, 76 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2023-08-26 06:10:00,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 120 transitions, 652 flow [2023-08-26 06:10:00,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:10:00,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:10:00,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1310 transitions. [2023-08-26 06:10:00,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5001909125620466 [2023-08-26 06:10:00,080 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1310 transitions. [2023-08-26 06:10:00,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1310 transitions. [2023-08-26 06:10:00,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:10:00,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1310 transitions. [2023-08-26 06:10:00,083 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) [2023-08-26 06:10:00,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:10:00,087 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:10:00,087 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 370 flow. Second operand 3 states and 1310 transitions. [2023-08-26 06:10:00,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 120 transitions, 652 flow [2023-08-26 06:10:00,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 120 transitions, 649 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 06:10:00,093 INFO L231 Difference]: Finished difference. Result has 78 places, 89 transitions, 385 flow [2023-08-26 06:10:00,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=74, 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=385, PETRI_PLACES=78, PETRI_TRANSITIONS=89} [2023-08-26 06:10:00,097 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2023-08-26 06:10:00,097 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 89 transitions, 385 flow [2023-08-26 06:10:00,098 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) [2023-08-26 06:10:00,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:10:00,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:10:00,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 06:10:00,098 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread_ath9kErr2ASSERT_VIOLATIONASSERT === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-26 06:10:00,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:10:00,099 INFO L85 PathProgramCache]: Analyzing trace with hash -808064374, now seen corresponding path program 1 times [2023-08-26 06:10:00,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:10:00,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800230371] [2023-08-26 06:10:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:10:00,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:10:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:10:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:10:00,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:10:00,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800230371] [2023-08-26 06:10:00,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800230371] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:10:00,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:10:00,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:10:00,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630350693] [2023-08-26 06:10:00,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:10:00,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:10:00,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:10:00,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:10:00,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:10:00,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 873 [2023-08-26 06:10:00,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 89 transitions, 385 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) [2023-08-26 06:10:00,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:10:00,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 873 [2023-08-26 06:10:00,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:10:00,549 INFO L124 PetriNetUnfolderBase]: 2377/4634 cut-off events. [2023-08-26 06:10:00,549 INFO L125 PetriNetUnfolderBase]: For 2688/2891 co-relation queries the response was YES. [2023-08-26 06:10:00,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12119 conditions, 4634 events. 2377/4634 cut-off events. For 2688/2891 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 32636 event pairs, 709 based on Foata normal form. 214/4080 useless extension candidates. Maximal degree in co-relation 12106. Up to 1726 conditions per place. [2023-08-26 06:10:00,577 INFO L140 encePairwiseOnDemand]: 864/873 looper letters, 70 selfloop transitions, 7 changer transitions 3/120 dead transitions. [2023-08-26 06:10:00,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 120 transitions, 681 flow [2023-08-26 06:10:00,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:10:00,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:10:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1275 transitions. [2023-08-26 06:10:00,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868270332187858 [2023-08-26 06:10:00,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1275 transitions. [2023-08-26 06:10:00,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1275 transitions. [2023-08-26 06:10:00,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:10:00,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1275 transitions. [2023-08-26 06:10:00,584 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) [2023-08-26 06:10:00,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:10:00,588 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:10:00,588 INFO L175 Difference]: Start difference. First operand has 78 places, 89 transitions, 385 flow. Second operand 3 states and 1275 transitions. [2023-08-26 06:10:00,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 120 transitions, 681 flow [2023-08-26 06:10:00,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 120 transitions, 671 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:10:00,594 INFO L231 Difference]: Finished difference. Result has 80 places, 91 transitions, 433 flow [2023-08-26 06:10:00,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=76, 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=433, PETRI_PLACES=80, PETRI_TRANSITIONS=91} [2023-08-26 06:10:00,595 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2023-08-26 06:10:00,595 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 91 transitions, 433 flow [2023-08-26 06:10:00,596 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) [2023-08-26 06:10:00,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:10:00,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:10:00,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 06:10:00,596 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread_usbErr10ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-26 06:10:00,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:10:00,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1740483616, now seen corresponding path program 1 times [2023-08-26 06:10:00,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:10:00,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338054800] [2023-08-26 06:10:00,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:10:00,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:10:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:10:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:10:00,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:10:00,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338054800] [2023-08-26 06:10:00,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338054800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:10:00,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:10:00,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 06:10:00,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995112041] [2023-08-26 06:10:00,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:10:00,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:10:00,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:10:00,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:10:00,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:10:00,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 873 [2023-08-26 06:10:00,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 91 transitions, 433 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) [2023-08-26 06:10:00,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:10:00,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 873 [2023-08-26 06:10:00,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:10:00,761 INFO L124 PetriNetUnfolderBase]: 449/951 cut-off events. [2023-08-26 06:10:00,761 INFO L125 PetriNetUnfolderBase]: For 707/726 co-relation queries the response was YES. [2023-08-26 06:10:00,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2323 conditions, 951 events. 449/951 cut-off events. For 707/726 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4792 event pairs, 128 based on Foata normal form. 68/840 useless extension candidates. Maximal degree in co-relation 2309. Up to 377 conditions per place. [2023-08-26 06:10:00,766 INFO L140 encePairwiseOnDemand]: 869/873 looper letters, 42 selfloop transitions, 3 changer transitions 1/68 dead transitions. [2023-08-26 06:10:00,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 362 flow [2023-08-26 06:10:00,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:10:00,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:10:00,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1252 transitions. [2023-08-26 06:10:00,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478045055364643 [2023-08-26 06:10:00,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1252 transitions. [2023-08-26 06:10:00,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1252 transitions. [2023-08-26 06:10:00,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:10:00,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1252 transitions. [2023-08-26 06:10:00,772 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) [2023-08-26 06:10:00,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:10:00,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:10:00,776 INFO L175 Difference]: Start difference. First operand has 80 places, 91 transitions, 433 flow. Second operand 3 states and 1252 transitions. [2023-08-26 06:10:00,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 362 flow [2023-08-26 06:10:00,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 68 transitions, 287 flow, removed 18 selfloop flow, removed 11 redundant places. [2023-08-26 06:10:00,780 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 175 flow [2023-08-26 06:10:00,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=61, 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=175, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-26 06:10:00,781 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -13 predicate places. [2023-08-26 06:10:00,781 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 175 flow [2023-08-26 06:10:00,781 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) [2023-08-26 06:10:00,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:10:00,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:10:00,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 06:10:00,782 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread_usbErr4ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-26 06:10:00,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:10:00,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1874468719, now seen corresponding path program 1 times [2023-08-26 06:10:00,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:10:00,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999041232] [2023-08-26 06:10:00,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:10:00,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:10:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:10:01,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 06:10:01,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:10:01,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999041232] [2023-08-26 06:10:01,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999041232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:10:01,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:10:01,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 06:10:01,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805201278] [2023-08-26 06:10:01,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:10:01,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 06:10:01,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:10:01,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 06:10:01,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 06:10:01,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 397 out of 873 [2023-08-26 06:10:01,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 175 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) [2023-08-26 06:10:01,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:10:01,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 397 of 873 [2023-08-26 06:10:01,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:10:01,564 INFO L124 PetriNetUnfolderBase]: 2743/4130 cut-off events. [2023-08-26 06:10:01,564 INFO L125 PetriNetUnfolderBase]: For 1293/1293 co-relation queries the response was YES. [2023-08-26 06:10:01,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9511 conditions, 4130 events. 2743/4130 cut-off events. For 1293/1293 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 19949 event pairs, 779 based on Foata normal form. 0/3512 useless extension candidates. Maximal degree in co-relation 9501. Up to 2255 conditions per place. [2023-08-26 06:10:01,585 INFO L140 encePairwiseOnDemand]: 868/873 looper letters, 109 selfloop transitions, 4 changer transitions 5/130 dead transitions. [2023-08-26 06:10:01,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 130 transitions, 598 flow [2023-08-26 06:10:01,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 06:10:01,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 06:10:01,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2495 transitions. [2023-08-26 06:10:01,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47632684230622374 [2023-08-26 06:10:01,591 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2495 transitions. [2023-08-26 06:10:01,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2495 transitions. [2023-08-26 06:10:01,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:10:01,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2495 transitions. [2023-08-26 06:10:01,598 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) [2023-08-26 06:10:01,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 873.0) internal successors, (6111), 7 states have internal predecessors, (6111), 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) [2023-08-26 06:10:01,605 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 873.0) internal successors, (6111), 7 states have internal predecessors, (6111), 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) [2023-08-26 06:10:01,605 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 175 flow. Second operand 6 states and 2495 transitions. [2023-08-26 06:10:01,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 130 transitions, 598 flow [2023-08-26 06:10:01,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 130 transitions, 580 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 06:10:01,613 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 191 flow [2023-08-26 06:10:01,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=59, 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=68, PETRI_TRANSITIONS=59} [2023-08-26 06:10:01,614 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -8 predicate places. [2023-08-26 06:10:01,614 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 191 flow [2023-08-26 06:10:01,615 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) [2023-08-26 06:10:01,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:10:01,615 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] [2023-08-26 06:10:01,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 06:10:01,615 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-26 06:10:01,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:10:01,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1296904785, now seen corresponding path program 1 times [2023-08-26 06:10:01,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:10:01,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781588908] [2023-08-26 06:10:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:10:01,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:10:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:10:01,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:10:01,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:10:01,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781588908] [2023-08-26 06:10:01,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781588908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:10:01,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:10:01,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:10:01,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828848623] [2023-08-26 06:10:01,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:10:01,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:10:01,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:10:01,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:10:01,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:10:01,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 873 [2023-08-26 06:10:01,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 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) [2023-08-26 06:10:01,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:10:01,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 873 [2023-08-26 06:10:01,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:10:01,803 INFO L124 PetriNetUnfolderBase]: 704/1318 cut-off events. [2023-08-26 06:10:01,804 INFO L125 PetriNetUnfolderBase]: For 347/358 co-relation queries the response was YES. [2023-08-26 06:10:01,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3096 conditions, 1318 events. 704/1318 cut-off events. For 347/358 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5865 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. [2023-08-26 06:10:01,810 INFO L140 encePairwiseOnDemand]: 870/873 looper letters, 41 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-26 06:10:01,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 275 flow [2023-08-26 06:10:01,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:10:01,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:10:01,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1149 transitions. [2023-08-26 06:10:01,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43871706758304696 [2023-08-26 06:10:01,813 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1149 transitions. [2023-08-26 06:10:01,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1149 transitions. [2023-08-26 06:10:01,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:10:01,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1149 transitions. [2023-08-26 06:10:01,816 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) [2023-08-26 06:10:01,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:10:01,820 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:10:01,820 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 191 flow. Second operand 3 states and 1149 transitions. [2023-08-26 06:10:01,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 275 flow [2023-08-26 06:10:01,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 58 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 06:10:01,823 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 193 flow [2023-08-26 06:10:01,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=66, 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=68, PETRI_TRANSITIONS=58} [2023-08-26 06:10:01,824 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -8 predicate places. [2023-08-26 06:10:01,825 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 193 flow [2023-08-26 06:10:01,825 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) [2023-08-26 06:10:01,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:10:01,825 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] [2023-08-26 06:10:01,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 06:10:01,825 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONASSERT === [thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE, thread_usbErr12ASSERT_VIOLATIONASSERT, thread_usbErr7ASSERT_VIOLATIONDATA_RACE (and 39 more)] === [2023-08-26 06:10:01,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:10:01,826 INFO L85 PathProgramCache]: Analyzing trace with hash -831264869, now seen corresponding path program 1 times [2023-08-26 06:10:01,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:10:01,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966135596] [2023-08-26 06:10:01,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:10:01,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:10:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:10:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:10:01,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:10:01,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966135596] [2023-08-26 06:10:01,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966135596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:10:01,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:10:01,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 06:10:01,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909869269] [2023-08-26 06:10:01,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:10:01,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:10:01,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:10:01,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:10:01,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:10:01,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 873 [2023-08-26 06:10:01,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 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) [2023-08-26 06:10:01,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:10:01,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 873 [2023-08-26 06:10:01,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:10:02,082 INFO L124 PetriNetUnfolderBase]: 538/1052 cut-off events. [2023-08-26 06:10:02,082 INFO L125 PetriNetUnfolderBase]: For 237/244 co-relation queries the response was YES. [2023-08-26 06:10:02,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 1052 events. 538/1052 cut-off events. For 237/244 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4845 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. [2023-08-26 06:10:02,085 INFO L140 encePairwiseOnDemand]: 871/873 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2023-08-26 06:10:02,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 57 transitions, 259 flow [2023-08-26 06:10:02,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:10:02,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:10:02,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1242 transitions. [2023-08-26 06:10:02,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742268041237113 [2023-08-26 06:10:02,088 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1242 transitions. [2023-08-26 06:10:02,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1242 transitions. [2023-08-26 06:10:02,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:10:02,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1242 transitions. [2023-08-26 06:10:02,091 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) [2023-08-26 06:10:02,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:10:02,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 873.0) internal successors, (3492), 4 states have internal predecessors, (3492), 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) [2023-08-26 06:10:02,095 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 193 flow. Second operand 3 states and 1242 transitions. [2023-08-26 06:10:02,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 57 transitions, 259 flow [2023-08-26 06:10:02,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 57 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 06:10:02,097 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2023-08-26 06:10:02,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=873, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=67, PETRI_TRANSITIONS=0} [2023-08-26 06:10:02,099 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -9 predicate places. [2023-08-26 06:10:02,099 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2023-08-26 06:10:02,099 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) [2023-08-26 06:10:02,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE (41 of 42 remaining) [2023-08-26 06:10:02,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr12ASSERT_VIOLATIONASSERT (40 of 42 remaining) [2023-08-26 06:10:02,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONDATA_RACE (39 of 42 remaining) [2023-08-26 06:10:02,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (38 of 42 remaining) [2023-08-26 06:10:02,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr11ASSERT_VIOLATIONDATA_RACE (37 of 42 remaining) [2023-08-26 06:10:02,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE (36 of 42 remaining) [2023-08-26 06:10:02,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4ASSERT_VIOLATIONDATA_RACE (35 of 42 remaining) [2023-08-26 06:10:02,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONDATA_RACE (34 of 42 remaining) [2023-08-26 06:10:02,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3ASSERT_VIOLATIONDATA_RACE (33 of 42 remaining) [2023-08-26 06:10:02,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONASSERT (32 of 42 remaining) [2023-08-26 06:10:02,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr1ASSERT_VIOLATIONDATA_RACE (31 of 42 remaining) [2023-08-26 06:10:02,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2ASSERT_VIOLATIONDATA_RACE (30 of 42 remaining) [2023-08-26 06:10:02,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONDATA_RACE (29 of 42 remaining) [2023-08-26 06:10:02,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (28 of 42 remaining) [2023-08-26 06:10:02,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONDATA_RACE (27 of 42 remaining) [2023-08-26 06:10:02,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2ASSERT_VIOLATIONDATA_RACE (26 of 42 remaining) [2023-08-26 06:10:02,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr8ASSERT_VIOLATIONASSERT (25 of 42 remaining) [2023-08-26 06:10:02,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (24 of 42 remaining) [2023-08-26 06:10:02,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr2ASSERT_VIOLATIONASSERT (23 of 42 remaining) [2023-08-26 06:10:02,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONDATA_RACE (22 of 42 remaining) [2023-08-26 06:10:02,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONDATA_RACE (21 of 42 remaining) [2023-08-26 06:10:02,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr4ASSERT_VIOLATIONDATA_RACE (20 of 42 remaining) [2023-08-26 06:10:02,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (19 of 42 remaining) [2023-08-26 06:10:02,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5ASSERT_VIOLATIONDATA_RACE (18 of 42 remaining) [2023-08-26 06:10:02,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr6ASSERT_VIOLATIONDATA_RACE (17 of 42 remaining) [2023-08-26 06:10:02,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (16 of 42 remaining) [2023-08-26 06:10:02,104 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 42 remaining) [2023-08-26 06:10:02,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr9ASSERT_VIOLATIONDATA_RACE (14 of 42 remaining) [2023-08-26 06:10:02,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr7ASSERT_VIOLATIONDATA_RACE (13 of 42 remaining) [2023-08-26 06:10:02,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr11ASSERT_VIOLATIONDATA_RACE (12 of 42 remaining) [2023-08-26 06:10:02,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr2ASSERT_VIOLATIONASSERT (11 of 42 remaining) [2023-08-26 06:10:02,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr12ASSERT_VIOLATIONASSERT (10 of 42 remaining) [2023-08-26 06:10:02,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONDATA_RACE (9 of 42 remaining) [2023-08-26 06:10:02,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (8 of 42 remaining) [2023-08-26 06:10:02,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr8ASSERT_VIOLATIONASSERT (7 of 42 remaining) [2023-08-26 06:10:02,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (6 of 42 remaining) [2023-08-26 06:10:02,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr10ASSERT_VIOLATIONDATA_RACE (5 of 42 remaining) [2023-08-26 06:10:02,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr10ASSERT_VIOLATIONDATA_RACE (4 of 42 remaining) [2023-08-26 06:10:02,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr9ASSERT_VIOLATIONDATA_RACE (3 of 42 remaining) [2023-08-26 06:10:02,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr5ASSERT_VIOLATIONDATA_RACE (2 of 42 remaining) [2023-08-26 06:10:02,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr3ASSERT_VIOLATIONDATA_RACE (1 of 42 remaining) [2023-08-26 06:10:02,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (0 of 42 remaining) [2023-08-26 06:10:02,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 06:10:02,106 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:10:02,109 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 (1/2) [2023-08-26 06:10:02,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 421 places, 459 transitions, 948 flow [2023-08-26 06:10:02,153 INFO L124 PetriNetUnfolderBase]: 41/467 cut-off events. [2023-08-26 06:10:02,153 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 06:10:02,154 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. [2023-08-26 06:10:02,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 421 places, 459 transitions, 948 flow [2023-08-26 06:10:02,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 287 transitions, 591 flow [2023-08-26 06:10:02,156 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 06:10:02,157 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 287 transitions, 591 flow [2023-08-26 06:10:02,157 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 287 transitions, 591 flow [2023-08-26 06:10:02,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 287 transitions, 591 flow [2023-08-26 06:10:02,189 INFO L124 PetriNetUnfolderBase]: 38/420 cut-off events. [2023-08-26 06:10:02,190 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 06:10:02,191 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. [2023-08-26 06:10:02,200 INFO L119 LiptonReduction]: Number of co-enabled transitions 18732 [2023-08-26 06:10:07,674 INFO L134 LiptonReduction]: Checked pairs total: 55623 [2023-08-26 06:10:07,675 INFO L136 LiptonReduction]: Total number of compositions: 349 [2023-08-26 06:10:07,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 06:10:07,679 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;@5eca6160, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 06:10:07,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-26 06:10:07,683 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 06:10:07,684 INFO L124 PetriNetUnfolderBase]: 9/61 cut-off events. [2023-08-26 06:10:07,684 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 06:10:07,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 06:10:07,684 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 06:10:07,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_usbThread1of1ForFork0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_usbThread1of1ForFork0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread_usbErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-26 06:10:07,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 06:10:07,685 INFO L85 PathProgramCache]: Analyzing trace with hash 990144827, now seen corresponding path program 1 times [2023-08-26 06:10:07,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 06:10:07,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378505674] [2023-08-26 06:10:07,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 06:10:07,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 06:10:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 06:10:07,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 06:10:07,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 06:10:07,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378505674] [2023-08-26 06:10:07,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378505674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 06:10:07,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 06:10:07,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 06:10:07,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163685603] [2023-08-26 06:10:07,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 06:10:07,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 06:10:07,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 06:10:07,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 06:10:07,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 06:10:07,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 808 [2023-08-26 06:10:07,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 155 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) [2023-08-26 06:10:07,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 06:10:07,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 808 [2023-08-26 06:10:07,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 06:10:07,840 INFO L124 PetriNetUnfolderBase]: 304/665 cut-off events. [2023-08-26 06:10:07,840 INFO L125 PetriNetUnfolderBase]: For 17/47 co-relation queries the response was YES. [2023-08-26 06:10:07,841 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 3479 event pairs, 132 based on Foata normal form. 40/471 useless extension candidates. Maximal degree in co-relation 958. Up to 347 conditions per place. [2023-08-26 06:10:07,841 INFO L140 encePairwiseOnDemand]: 794/808 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2023-08-26 06:10:07,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 69 transitions, 235 flow [2023-08-26 06:10:07,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 06:10:07,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 06:10:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1266 transitions. [2023-08-26 06:10:07,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222772277227723 [2023-08-26 06:10:07,846 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1266 transitions. [2023-08-26 06:10:07,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1266 transitions. [2023-08-26 06:10:07,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 06:10:07,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1266 transitions. [2023-08-26 06:10:07,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 422.0) internal successors, (1266), 3 states have internal predecessors, (1266), 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) [2023-08-26 06:10:07,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 808.0) internal successors, (3232), 4 states have internal predecessors, (3232), 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) [2023-08-26 06:10:07,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 808.0) internal successors, (3232), 4 states have internal predecessors, (3232), 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) [2023-08-26 06:10:07,852 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 155 flow. Second operand 3 states and 1266 transitions. [2023-08-26 06:10:07,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 69 transitions, 235 flow [2023-08-26 06:10:07,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 69 transitions, 225 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 06:10:07,854 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2023-08-26 06:10:07,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=808, 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} [2023-08-26 06:10:07,854 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2023-08-26 06:10:07,854 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2023-08-26 06:10:07,855 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) [2023-08-26 06:10:07,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-26 06:10:07,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-26 06:10:07,855 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-26 06:10:07,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 06:10:07,855 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 06:10:07,856 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (2/2) [2023-08-26 06:10:07,857 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 06:10:07,857 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 06:10:07,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:10:07 BasicIcfg [2023-08-26 06:10:07,862 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 06:10:07,863 INFO L158 Benchmark]: Toolchain (without parser) took 22556.27ms. Allocated memory was 356.5MB in the beginning and 796.9MB in the end (delta: 440.4MB). Free memory was 311.8MB in the beginning and 639.2MB in the end (delta: -327.4MB). Peak memory consumption was 116.1MB. Max. memory is 16.0GB. [2023-08-26 06:10:07,863 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 356.5MB. Free memory was 334.7MB in the beginning and 334.6MB in the end (delta: 91.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 06:10:07,863 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1014.67ms. Allocated memory is still 356.5MB. Free memory was 311.8MB in the beginning and 257.3MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. [2023-08-26 06:10:07,863 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.23ms. Allocated memory is still 356.5MB. Free memory was 257.3MB in the beginning and 253.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 06:10:07,863 INFO L158 Benchmark]: Boogie Preprocessor took 54.03ms. Allocated memory is still 356.5MB. Free memory was 253.1MB in the beginning and 249.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 06:10:07,864 INFO L158 Benchmark]: RCFGBuilder took 635.71ms. Allocated memory is still 356.5MB. Free memory was 249.9MB in the beginning and 218.5MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-26 06:10:07,864 INFO L158 Benchmark]: TraceAbstraction took 20776.48ms. Allocated memory was 356.5MB in the beginning and 796.9MB in the end (delta: 440.4MB). Free memory was 217.4MB in the beginning and 639.2MB in the end (delta: -421.8MB). Peak memory consumption was 21.8MB. Max. memory is 16.0GB. [2023-08-26 06:10:07,866 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 356.5MB. Free memory was 334.7MB in the beginning and 334.6MB in the end (delta: 91.7kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 1014.67ms. Allocated memory is still 356.5MB. Free memory was 311.8MB in the beginning and 257.3MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 68.23ms. Allocated memory is still 356.5MB. Free memory was 257.3MB in the beginning and 253.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 54.03ms. Allocated memory is still 356.5MB. Free memory was 253.1MB in the beginning and 249.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 635.71ms. Allocated memory is still 356.5MB. Free memory was 249.9MB in the beginning and 218.5MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * TraceAbstraction took 20776.48ms. Allocated memory was 356.5MB in the beginning and 796.9MB in the end (delta: 440.4MB). Free memory was 217.4MB in the beginning and 639.2MB in the end (delta: -421.8MB). Peak memory consumption was 21.8MB. 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: 7.5s, 296 PlacesBefore, 76 PlacesAfterwards, 319 TransitionsBefore, 82 TransitionsAfterwards, 18942 CoEnabledTransitionPairs, 11 FixpointIterations, 114 TrivialSequentialCompositions, 226 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 51 ConcurrentYvCompositions, 17 ChoiceCompositions, 414 TotalNumberOfCompositions, 60318 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26324, independent: 25352, independent conditional: 0, independent unconditional: 25352, dependent: 972, dependent conditional: 0, dependent unconditional: 972, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11207, independent: 11110, independent conditional: 0, independent unconditional: 11110, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 26324, independent: 14242, independent conditional: 0, independent unconditional: 14242, dependent: 875, dependent conditional: 0, dependent unconditional: 875, unknown: 11207, unknown conditional: 0, unknown unconditional: 11207] , Statistics on independence cache: Total cache size (in pairs): 539, Positive cache size: 496, Positive conditional cache size: 0, Positive unconditional cache size: 496, Negative cache size: 43, Negative conditional cache size: 0, Negative unconditional cache size: 43, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5s, 267 PlacesBefore, 64 PlacesAfterwards, 287 TransitionsBefore, 69 TransitionsAfterwards, 18732 CoEnabledTransitionPairs, 10 FixpointIterations, 60 TrivialSequentialCompositions, 214 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 51 ConcurrentYvCompositions, 15 ChoiceCompositions, 349 TotalNumberOfCompositions, 55623 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 31467, independent: 30589, independent conditional: 0, independent unconditional: 30589, dependent: 878, dependent conditional: 0, dependent unconditional: 878, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11304, independent: 11198, independent conditional: 0, independent unconditional: 11198, dependent: 106, dependent conditional: 0, dependent unconditional: 106, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 31467, independent: 19391, independent conditional: 0, independent unconditional: 19391, dependent: 772, dependent conditional: 0, dependent unconditional: 772, unknown: 11304, unknown conditional: 0, unknown unconditional: 11304] , Statistics on independence cache: Total cache size (in pairs): 611, Positive cache size: 569, Positive conditional cache size: 0, Positive unconditional cache size: 569, 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 - 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 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: 14.8s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 392 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 392 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1502 IncrementalHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 61 mSDtfsCounter, 1502 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=433occurred 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 151 ConstructedInterpolants, 0 QuantifiedInterpolants, 367 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 - 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: 5.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 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=155occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s 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 - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 06:10:07,899 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...