/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 04:00:00,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 04:00:00,339 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 [2023-08-27 04:00:00,346 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 04:00:00,347 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 04:00:00,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 04:00:00,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 04:00:00,380 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 04:00:00,381 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 04:00:00,385 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 04:00:00,385 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 04:00:00,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 04:00:00,385 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 04:00:00,387 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 04:00:00,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 04:00:00,387 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 04:00:00,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 04:00:00,387 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 04:00:00,388 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 04:00:00,388 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 04:00:00,388 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 04:00:00,389 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 04:00:00,389 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 04:00:00,390 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 04:00:00,390 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 04:00:00,390 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 04:00:00,390 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 04:00:00,390 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:00:00,391 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 04:00:00,391 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 04:00:00,392 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 04:00:00,392 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 04:00:00,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 04:00:00,392 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 04:00:00,393 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 04:00:00,393 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 04:00:00,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 04:00:00,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 04:00:00,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 04:00:00,732 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 04:00:00,732 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 04:00:00,733 INFO L431 ainManager$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 [2023-08-27 04:00:01,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 04:00:02,300 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 04:00:02,300 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i [2023-08-27 04:00:02,330 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/399f5cab6/9f8d8c4084f0462696d65a4f4fde1e12/FLAGfc4161e3f [2023-08-27 04:00:02,346 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/399f5cab6/9f8d8c4084f0462696d65a4f4fde1e12 [2023-08-27 04:00:02,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 04:00:02,352 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 04:00:02,354 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 04:00:02,354 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 04:00:02,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 04:00:02,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:00:02" (1/1) ... [2023-08-27 04:00:02,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2bb3c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:00:02, skipping insertion in model container [2023-08-27 04:00:02,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:00:02" (1/1) ... [2023-08-27 04:00:02,423 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 04:00:03,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:00:03,035 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 04:00:03,063 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-27 04:00:03,065 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-27 04:00:03,071 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [729] [2023-08-27 04:00:03,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:00:03,272 INFO L206 MainTranslator]: Completed translation [2023-08-27 04:00:03,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:00:03 WrapperNode [2023-08-27 04:00:03,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 04:00:03,274 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 04:00:03,274 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 04:00:03,274 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 04:00:03,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:00:03" (1/1) ... [2023-08-27 04:00:03,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:00:03" (1/1) ... [2023-08-27 04:00:03,348 INFO L138 Inliner]: procedures = 486, calls = 44, calls flagged for inlining = 16, calls inlined = 21, statements flattened = 223 [2023-08-27 04:00:03,357 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 04:00:03,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 04:00:03,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 04:00:03,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 04:00:03,369 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:00:03" (1/1) ... [2023-08-27 04:00:03,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:00:03" (1/1) ... [2023-08-27 04:00:03,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:00:03" (1/1) ... [2023-08-27 04:00:03,373 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:00:03" (1/1) ... [2023-08-27 04:00:03,396 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:00:03" (1/1) ... [2023-08-27 04:00:03,399 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:00:03" (1/1) ... [2023-08-27 04:00:03,403 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:00:03" (1/1) ... [2023-08-27 04:00:03,433 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:00:03" (1/1) ... [2023-08-27 04:00:03,438 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 04:00:03,439 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 04:00:03,439 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 04:00:03,439 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 04:00:03,439 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:00:03" (1/1) ... [2023-08-27 04:00:03,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:00:03,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:00:03,473 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) [2023-08-27 04:00:03,498 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 [2023-08-27 04:00:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2023-08-27 04:00:03,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2023-08-27 04:00:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 04:00:03,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 04:00:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2023-08-27 04:00:03,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2023-08-27 04:00:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 04:00:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 04:00:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-27 04:00:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 04:00:03,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 04:00:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 04:00:03,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 04:00:03,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 04:00:03,514 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 04:00:03,770 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 04:00:03,772 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 04:00:04,048 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 04:00:04,057 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 04:00:04,057 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 04:00:04,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:00:04 BoogieIcfgContainer [2023-08-27 04:00:04,059 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 04:00:04,062 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 04:00:04,062 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 04:00:04,065 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 04:00:04,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:00:02" (1/3) ... [2023-08-27 04:00:04,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7047a7d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:00:04, skipping insertion in model container [2023-08-27 04:00:04,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:00:03" (2/3) ... [2023-08-27 04:00:04,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7047a7d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:00:04, skipping insertion in model container [2023-08-27 04:00:04,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:00:04" (3/3) ... [2023-08-27 04:00:04,067 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2023-08-27 04:00:04,080 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 04:00:04,080 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-27 04:00:04,081 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 04:00:04,168 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-27 04:00:04,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 334 transitions, 698 flow [2023-08-27 04:00:04,372 INFO L124 PetriNetUnfolderBase]: 41/341 cut-off events. [2023-08-27 04:00:04,373 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 04:00:04,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 341 events. 41/341 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 843 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 225. Up to 11 conditions per place. [2023-08-27 04:00:04,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 334 transitions, 698 flow [2023-08-27 04:00:04,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 217 transitions, 451 flow [2023-08-27 04:00:04,393 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 04:00:04,404 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 217 transitions, 451 flow [2023-08-27 04:00:04,406 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 217 transitions, 451 flow [2023-08-27 04:00:04,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 217 transitions, 451 flow [2023-08-27 04:00:04,465 INFO L124 PetriNetUnfolderBase]: 38/314 cut-off events. [2023-08-27 04:00:04,465 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 04:00:04,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 314 events. 38/314 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 726 event pairs, 0 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 224. Up to 11 conditions per place. [2023-08-27 04:00:04,477 INFO L119 LiptonReduction]: Number of co-enabled transitions 10480 [2023-08-27 04:00:09,771 INFO L134 LiptonReduction]: Checked pairs total: 13552 [2023-08-27 04:00:09,772 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-08-27 04:00:09,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 04:00:09,798 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;@38d24d50, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 04:00:09,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-27 04:00:09,806 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 04:00:09,806 INFO L124 PetriNetUnfolderBase]: 9/33 cut-off events. [2023-08-27 04:00:09,806 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 04:00:09,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:00:09,807 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:00:09,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_usbThread1of1ForFork0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_usbThread1of1ForFork0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread_usbErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 04:00:09,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:00:09,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1822807735, now seen corresponding path program 1 times [2023-08-27 04:00:09,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:00:09,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382769628] [2023-08-27 04:00:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:00:09,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:00:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:00:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:00:10,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:00:10,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382769628] [2023-08-27 04:00:10,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382769628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:00:10,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:00:10,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:00:10,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335640259] [2023-08-27 04:00:10,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:00:10,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:00:10,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:00:10,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:00:10,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:00:10,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 613 [2023-08-27 04:00:10,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 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) [2023-08-27 04:00:10,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:00:10,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 613 [2023-08-27 04:00:10,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:00:10,347 INFO L124 PetriNetUnfolderBase]: 217/347 cut-off events. [2023-08-27 04:00:10,348 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 04:00:10,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 709 conditions, 347 events. 217/347 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1208 event pairs, 90 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 581. Up to 256 conditions per place. [2023-08-27 04:00:10,349 INFO L140 encePairwiseOnDemand]: 605/613 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2023-08-27 04:00:10,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 165 flow [2023-08-27 04:00:10,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:00:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:00:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 876 transitions. [2023-08-27 04:00:10,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763458401305057 [2023-08-27 04:00:10,365 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 876 transitions. [2023-08-27 04:00:10,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 876 transitions. [2023-08-27 04:00:10,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:00:10,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 876 transitions. [2023-08-27 04:00:10,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 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) [2023-08-27 04:00:10,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 613.0) internal successors, (2452), 4 states have internal predecessors, (2452), 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) [2023-08-27 04:00:10,382 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 613.0) internal successors, (2452), 4 states have internal predecessors, (2452), 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) [2023-08-27 04:00:10,384 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 85 flow. Second operand 3 states and 876 transitions. [2023-08-27 04:00:10,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 165 flow [2023-08-27 04:00:10,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 155 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 04:00:10,388 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-08-27 04:00:10,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=613, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2023-08-27 04:00:10,392 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2023-08-27 04:00:10,393 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-08-27 04:00:10,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 280.6666666666667) internal successors, (842), 3 states have internal predecessors, (842), 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) [2023-08-27 04:00:10,395 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-27 04:00:10,396 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-27 04:00:10,396 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-27 04:00:10,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 04:00:10,396 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 04:00:10,398 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-08-27 04:00:10,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 334 transitions, 698 flow [2023-08-27 04:00:10,437 INFO L124 PetriNetUnfolderBase]: 41/341 cut-off events. [2023-08-27 04:00:10,438 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 04:00:10,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353 conditions, 341 events. 41/341 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 843 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 225. Up to 11 conditions per place. [2023-08-27 04:00:10,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 334 transitions, 698 flow [2023-08-27 04:00:10,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 229 transitions, 475 flow [2023-08-27 04:00:10,441 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 04:00:10,441 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 229 transitions, 475 flow [2023-08-27 04:00:10,441 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 229 transitions, 475 flow [2023-08-27 04:00:10,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 229 transitions, 475 flow [2023-08-27 04:00:10,468 INFO L124 PetriNetUnfolderBase]: 38/326 cut-off events. [2023-08-27 04:00:10,468 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 04:00:10,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 326 events. 38/326 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 765 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 225. Up to 11 conditions per place. [2023-08-27 04:00:10,474 INFO L119 LiptonReduction]: Number of co-enabled transitions 10510 [2023-08-27 04:00:15,827 INFO L134 LiptonReduction]: Checked pairs total: 13769 [2023-08-27 04:00:15,827 INFO L136 LiptonReduction]: Total number of compositions: 286 [2023-08-27 04:00:15,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 04:00:15,830 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;@38d24d50, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 04:00:15,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-27 04:00:15,831 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 04:00:15,831 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-27 04:00:15,831 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:00:15,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:00:15,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-27 04:00:15,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread_usbErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-27 04:00:15,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:00:15,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1334, now seen corresponding path program 1 times [2023-08-27 04:00:15,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:00:15,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833436521] [2023-08-27 04:00:15,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:00:15,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:00:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:00:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:00:15,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:00:15,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833436521] [2023-08-27 04:00:15,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833436521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:00:15,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:00:15,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-27 04:00:15,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619246846] [2023-08-27 04:00:15,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:00:15,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 04:00:15,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:00:15,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 04:00:15,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 04:00:15,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 620 [2023-08-27 04:00:15,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 89 flow. Second operand has 2 states, 2 states have (on average 296.5) internal successors, (593), 2 states have internal predecessors, (593), 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) [2023-08-27 04:00:15,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:00:15,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 620 [2023-08-27 04:00:15,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:00:15,918 INFO L124 PetriNetUnfolderBase]: 255/399 cut-off events. [2023-08-27 04:00:15,918 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 04:00:15,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 813 conditions, 399 events. 255/399 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1401 event pairs, 131 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 685. Up to 389 conditions per place. [2023-08-27 04:00:15,920 INFO L140 encePairwiseOnDemand]: 616/620 looper letters, 28 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-08-27 04:00:15,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 137 flow [2023-08-27 04:00:15,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 04:00:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 04:00:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 624 transitions. [2023-08-27 04:00:15,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032258064516129 [2023-08-27 04:00:15,923 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 624 transitions. [2023-08-27 04:00:15,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 624 transitions. [2023-08-27 04:00:15,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:00:15,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 624 transitions. [2023-08-27 04:00:15,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 312.0) internal successors, (624), 2 states have internal predecessors, (624), 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) [2023-08-27 04:00:15,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 620.0) internal successors, (1860), 3 states have internal predecessors, (1860), 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) [2023-08-27 04:00:15,929 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 620.0) internal successors, (1860), 3 states have internal predecessors, (1860), 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) [2023-08-27 04:00:15,929 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 89 flow. Second operand 2 states and 624 transitions. [2023-08-27 04:00:15,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 137 flow [2023-08-27 04:00:15,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 133 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 04:00:15,931 INFO L231 Difference]: Finished difference. Result has 30 places, 32 transitions, 77 flow [2023-08-27 04:00:15,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=77, PETRI_PLACES=30, PETRI_TRANSITIONS=32} [2023-08-27 04:00:15,932 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-27 04:00:15,932 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 32 transitions, 77 flow [2023-08-27 04:00:15,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 296.5) internal successors, (593), 2 states have internal predecessors, (593), 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) [2023-08-27 04:00:15,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:00:15,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 04:00:15,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 04:00:15,933 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_usbErr1ASSERT_VIOLATIONASSERT === [thread_usbErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-27 04:00:15,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:00:15,933 INFO L85 PathProgramCache]: Analyzing trace with hash 333287533, now seen corresponding path program 1 times [2023-08-27 04:00:15,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:00:15,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123030401] [2023-08-27 04:00:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:00:15,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:00:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:00:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:00:16,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:00:16,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123030401] [2023-08-27 04:00:16,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123030401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:00:16,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:00:16,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:00:16,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191271952] [2023-08-27 04:00:16,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:00:16,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:00:16,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:00:16,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:00:16,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 04:00:16,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 620 [2023-08-27 04:00:16,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 32 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 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) [2023-08-27 04:00:16,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:00:16,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 620 [2023-08-27 04:00:16,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:00:16,255 INFO L124 PetriNetUnfolderBase]: 476/744 cut-off events. [2023-08-27 04:00:16,255 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 04:00:16,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1500 conditions, 744 events. 476/744 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2682 event pairs, 113 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 1496. Up to 308 conditions per place. [2023-08-27 04:00:16,280 INFO L140 encePairwiseOnDemand]: 611/620 looper letters, 52 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2023-08-27 04:00:16,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 67 transitions, 283 flow [2023-08-27 04:00:16,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 04:00:16,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 04:00:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1452 transitions. [2023-08-27 04:00:16,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46838709677419355 [2023-08-27 04:00:16,285 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1452 transitions. [2023-08-27 04:00:16,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1452 transitions. [2023-08-27 04:00:16,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:00:16,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1452 transitions. [2023-08-27 04:00:16,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.4) internal successors, (1452), 5 states have internal predecessors, (1452), 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) [2023-08-27 04:00:16,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 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) [2023-08-27 04:00:16,295 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 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) [2023-08-27 04:00:16,295 INFO L175 Difference]: Start difference. First operand has 30 places, 32 transitions, 77 flow. Second operand 5 states and 1452 transitions. [2023-08-27 04:00:16,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 67 transitions, 283 flow [2023-08-27 04:00:16,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 67 transitions, 283 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 04:00:16,299 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 161 flow [2023-08-27 04:00:16,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=38, PETRI_TRANSITIONS=41} [2023-08-27 04:00:16,301 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-08-27 04:00:16,301 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 161 flow [2023-08-27 04:00:16,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 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) [2023-08-27 04:00:16,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:00:16,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:00:16,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 04:00:16,303 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread_ath9kErr0ASSERT_VIOLATIONASSERT === [thread_usbErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-27 04:00:16,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:00:16,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1830315525, now seen corresponding path program 1 times [2023-08-27 04:00:16,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:00:16,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552814135] [2023-08-27 04:00:16,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:00:16,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:00:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:00:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:00:16,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:00:16,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552814135] [2023-08-27 04:00:16,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552814135] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:00:16,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:00:16,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:00:16,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722623970] [2023-08-27 04:00:16,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:00:16,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:00:16,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:00:16,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:00:16,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:00:16,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 620 [2023-08-27 04:00:16,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 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) [2023-08-27 04:00:16,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:00:16,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 620 [2023-08-27 04:00:16,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:00:16,556 INFO L124 PetriNetUnfolderBase]: 536/820 cut-off events. [2023-08-27 04:00:16,557 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2023-08-27 04:00:16,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 820 events. 536/820 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2782 event pairs, 129 based on Foata normal form. 36/662 useless extension candidates. Maximal degree in co-relation 2175. Up to 427 conditions per place. [2023-08-27 04:00:16,561 INFO L140 encePairwiseOnDemand]: 612/620 looper letters, 48 selfloop transitions, 11 changer transitions 2/64 dead transitions. [2023-08-27 04:00:16,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 64 transitions, 370 flow [2023-08-27 04:00:16,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:00:16,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:00:16,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 888 transitions. [2023-08-27 04:00:16,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774193548387097 [2023-08-27 04:00:16,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 888 transitions. [2023-08-27 04:00:16,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 888 transitions. [2023-08-27 04:00:16,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:00:16,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 888 transitions. [2023-08-27 04:00:16,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 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) [2023-08-27 04:00:16,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 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) [2023-08-27 04:00:16,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 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) [2023-08-27 04:00:16,572 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 161 flow. Second operand 3 states and 888 transitions. [2023-08-27 04:00:16,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 64 transitions, 370 flow [2023-08-27 04:00:16,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 64 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 04:00:16,575 INFO L231 Difference]: Finished difference. Result has 42 places, 48 transitions, 267 flow [2023-08-27 04:00:16,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=267, PETRI_PLACES=42, PETRI_TRANSITIONS=48} [2023-08-27 04:00:16,576 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-27 04:00:16,576 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 48 transitions, 267 flow [2023-08-27 04:00:16,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 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) [2023-08-27 04:00:16,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:00:16,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:00:16,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 04:00:16,577 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_ath9kErr0ASSERT_VIOLATIONASSERT === [thread_usbErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-27 04:00:16,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:00:16,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2003528149, now seen corresponding path program 1 times [2023-08-27 04:00:16,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:00:16,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932189018] [2023-08-27 04:00:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:00:16,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:00:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:00:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:00:16,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:00:16,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932189018] [2023-08-27 04:00:16,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932189018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:00:16,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:00:16,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:00:16,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752823479] [2023-08-27 04:00:16,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:00:16,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:00:16,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:00:16,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:00:16,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:00:16,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 620 [2023-08-27 04:00:16,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 48 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 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) [2023-08-27 04:00:16,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:00:16,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 620 [2023-08-27 04:00:16,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:00:16,761 INFO L124 PetriNetUnfolderBase]: 588/888 cut-off events. [2023-08-27 04:00:16,761 INFO L125 PetriNetUnfolderBase]: For 1217/1217 co-relation queries the response was YES. [2023-08-27 04:00:16,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2691 conditions, 888 events. 588/888 cut-off events. For 1217/1217 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3077 event pairs, 239 based on Foata normal form. 24/712 useless extension candidates. Maximal degree in co-relation 2681. Up to 804 conditions per place. [2023-08-27 04:00:16,767 INFO L140 encePairwiseOnDemand]: 617/620 looper letters, 50 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-27 04:00:16,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 405 flow [2023-08-27 04:00:16,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:00:16,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:00:16,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 911 transitions. [2023-08-27 04:00:16,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48978494623655916 [2023-08-27 04:00:16,770 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 911 transitions. [2023-08-27 04:00:16,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 911 transitions. [2023-08-27 04:00:16,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:00:16,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 911 transitions. [2023-08-27 04:00:16,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.6666666666667) internal successors, (911), 3 states have internal predecessors, (911), 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) [2023-08-27 04:00:16,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 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) [2023-08-27 04:00:16,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 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) [2023-08-27 04:00:16,777 INFO L175 Difference]: Start difference. First operand has 42 places, 48 transitions, 267 flow. Second operand 3 states and 911 transitions. [2023-08-27 04:00:16,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 405 flow [2023-08-27 04:00:16,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 55 transitions, 378 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 04:00:16,782 INFO L231 Difference]: Finished difference. Result has 41 places, 49 transitions, 260 flow [2023-08-27 04:00:16,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=41, PETRI_TRANSITIONS=49} [2023-08-27 04:00:16,782 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-27 04:00:16,783 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 49 transitions, 260 flow [2023-08-27 04:00:16,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 295.0) internal successors, (885), 3 states have internal predecessors, (885), 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) [2023-08-27 04:00:16,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:00:16,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:00:16,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 04:00:16,784 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread_usbErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-27 04:00:16,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:00:16,784 INFO L85 PathProgramCache]: Analyzing trace with hash -79592607, now seen corresponding path program 1 times [2023-08-27 04:00:16,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:00:16,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301024607] [2023-08-27 04:00:16,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:00:16,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:00:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:00:16,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:00:16,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:00:16,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301024607] [2023-08-27 04:00:16,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301024607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:00:16,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:00:16,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:00:16,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641867963] [2023-08-27 04:00:16,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:00:16,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:00:16,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:00:16,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:00:16,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:00:16,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 620 [2023-08-27 04:00:16,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 49 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 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) [2023-08-27 04:00:16,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:00:16,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 620 [2023-08-27 04:00:16,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:00:16,982 INFO L124 PetriNetUnfolderBase]: 578/872 cut-off events. [2023-08-27 04:00:16,983 INFO L125 PetriNetUnfolderBase]: For 898/898 co-relation queries the response was YES. [2023-08-27 04:00:16,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2662 conditions, 872 events. 578/872 cut-off events. For 898/898 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3042 event pairs, 263 based on Foata normal form. 8/682 useless extension candidates. Maximal degree in co-relation 2651. Up to 835 conditions per place. [2023-08-27 04:00:16,988 INFO L140 encePairwiseOnDemand]: 616/620 looper letters, 45 selfloop transitions, 3 changer transitions 1/52 dead transitions. [2023-08-27 04:00:16,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 366 flow [2023-08-27 04:00:16,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:00:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:00:16,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 871 transitions. [2023-08-27 04:00:16,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682795698924731 [2023-08-27 04:00:16,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 871 transitions. [2023-08-27 04:00:16,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 871 transitions. [2023-08-27 04:00:16,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:00:16,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 871 transitions. [2023-08-27 04:00:16,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 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) [2023-08-27 04:00:16,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 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) [2023-08-27 04:00:16,997 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 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) [2023-08-27 04:00:16,997 INFO L175 Difference]: Start difference. First operand has 41 places, 49 transitions, 260 flow. Second operand 3 states and 871 transitions. [2023-08-27 04:00:16,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 366 flow [2023-08-27 04:00:17,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:00:17,001 INFO L231 Difference]: Finished difference. Result has 43 places, 49 transitions, 271 flow [2023-08-27 04:00:17,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=271, PETRI_PLACES=43, PETRI_TRANSITIONS=49} [2023-08-27 04:00:17,001 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-27 04:00:17,002 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 49 transitions, 271 flow [2023-08-27 04:00:17,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 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) [2023-08-27 04:00:17,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:00:17,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:00:17,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 04:00:17,003 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_ath9kErr0ASSERT_VIOLATIONASSERT === [thread_usbErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-27 04:00:17,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:00:17,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1977205903, now seen corresponding path program 1 times [2023-08-27 04:00:17,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:00:17,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249902843] [2023-08-27 04:00:17,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:00:17,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:00:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:00:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:00:17,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:00:17,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249902843] [2023-08-27 04:00:17,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249902843] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:00:17,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:00:17,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:00:17,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316315571] [2023-08-27 04:00:17,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:00:17,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:00:17,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:00:17,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:00:17,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:00:17,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 620 [2023-08-27 04:00:17,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 49 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 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) [2023-08-27 04:00:17,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:00:17,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 620 [2023-08-27 04:00:17,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:00:17,166 INFO L124 PetriNetUnfolderBase]: 248/395 cut-off events. [2023-08-27 04:00:17,167 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2023-08-27 04:00:17,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 395 events. 248/395 cut-off events. For 568/568 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1098 event pairs, 48 based on Foata normal form. 28/331 useless extension candidates. Maximal degree in co-relation 1116. Up to 216 conditions per place. [2023-08-27 04:00:17,168 INFO L140 encePairwiseOnDemand]: 614/620 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-08-27 04:00:17,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 291 flow [2023-08-27 04:00:17,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:00:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:00:17,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 869 transitions. [2023-08-27 04:00:17,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46720430107526884 [2023-08-27 04:00:17,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 869 transitions. [2023-08-27 04:00:17,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 869 transitions. [2023-08-27 04:00:17,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:00:17,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 869 transitions. [2023-08-27 04:00:17,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 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) [2023-08-27 04:00:17,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 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) [2023-08-27 04:00:17,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 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) [2023-08-27 04:00:17,176 INFO L175 Difference]: Start difference. First operand has 43 places, 49 transitions, 271 flow. Second operand 3 states and 869 transitions. [2023-08-27 04:00:17,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 291 flow [2023-08-27 04:00:17,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 239 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-27 04:00:17,178 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-27 04:00:17,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-27 04:00:17,179 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-27 04:00:17,179 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-27 04:00:17,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 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) [2023-08-27 04:00:17,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONASSERT (8 of 9 remaining) [2023-08-27 04:00:17,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (7 of 9 remaining) [2023-08-27 04:00:17,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (6 of 9 remaining) [2023-08-27 04:00:17,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONASSERT (5 of 9 remaining) [2023-08-27 04:00:17,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONASSERT (4 of 9 remaining) [2023-08-27 04:00:17,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 9 remaining) [2023-08-27 04:00:17,180 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONASSERT (2 of 9 remaining) [2023-08-27 04:00:17,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONASSERT (1 of 9 remaining) [2023-08-27 04:00:17,181 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONASSERT (0 of 9 remaining) [2023-08-27 04:00:17,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 04:00:17,181 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-27 04:00:17,181 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (2/2) [2023-08-27 04:00:17,184 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 04:00:17,184 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 04:00:17,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:00:17 BasicIcfg [2023-08-27 04:00:17,188 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 04:00:17,188 INFO L158 Benchmark]: Toolchain (without parser) took 14836.63ms. Allocated memory was 375.4MB in the beginning and 574.6MB in the end (delta: 199.2MB). Free memory was 348.0MB in the beginning and 525.1MB in the end (delta: -177.1MB). Peak memory consumption was 343.7MB. Max. memory is 16.0GB. [2023-08-27 04:00:17,188 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 375.4MB. Free memory was 351.7MB in the beginning and 351.6MB in the end (delta: 87.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 04:00:17,188 INFO L158 Benchmark]: CACSL2BoogieTranslator took 919.40ms. Allocated memory is still 375.4MB. Free memory was 348.0MB in the beginning and 340.2MB in the end (delta: 7.8MB). Peak memory consumption was 57.3MB. Max. memory is 16.0GB. [2023-08-27 04:00:17,189 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.94ms. Allocated memory is still 375.4MB. Free memory was 340.2MB in the beginning and 336.0MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 04:00:17,189 INFO L158 Benchmark]: Boogie Preprocessor took 80.36ms. Allocated memory is still 375.4MB. Free memory was 336.0MB in the beginning and 333.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 04:00:17,189 INFO L158 Benchmark]: RCFGBuilder took 620.87ms. Allocated memory is still 375.4MB. Free memory was 333.4MB in the beginning and 308.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-27 04:00:17,189 INFO L158 Benchmark]: TraceAbstraction took 13125.66ms. Allocated memory was 375.4MB in the beginning and 574.6MB in the end (delta: 199.2MB). Free memory was 307.4MB in the beginning and 525.1MB in the end (delta: -217.7MB). Peak memory consumption was 301.1MB. Max. memory is 16.0GB. [2023-08-27 04:00:17,191 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 375.4MB. Free memory was 351.7MB in the beginning and 351.6MB in the end (delta: 87.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 919.40ms. Allocated memory is still 375.4MB. Free memory was 348.0MB in the beginning and 340.2MB in the end (delta: 7.8MB). Peak memory consumption was 57.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 82.94ms. Allocated memory is still 375.4MB. Free memory was 340.2MB in the beginning and 336.0MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 80.36ms. Allocated memory is still 375.4MB. Free memory was 336.0MB in the beginning and 333.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 620.87ms. Allocated memory is still 375.4MB. Free memory was 333.4MB in the beginning and 308.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 13125.66ms. Allocated memory was 375.4MB in the beginning and 574.6MB in the end (delta: 199.2MB). Free memory was 307.4MB in the beginning and 525.1MB in the end (delta: -217.7MB). Peak memory consumption was 301.1MB. 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: 5.4s, 197 PlacesBefore, 31 PlacesAfterwards, 217 TransitionsBefore, 34 TransitionsAfterwards, 10480 CoEnabledTransitionPairs, 8 FixpointIterations, 51 TrivialSequentialCompositions, 151 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 51 ConcurrentYvCompositions, 17 ChoiceCompositions, 279 TotalNumberOfCompositions, 13552 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11042, independent: 10879, independent conditional: 0, independent unconditional: 10879, dependent: 163, dependent conditional: 0, dependent unconditional: 163, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6248, independent: 6205, independent conditional: 0, independent unconditional: 6205, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11042, independent: 4674, independent conditional: 0, independent unconditional: 4674, dependent: 120, dependent conditional: 0, dependent unconditional: 120, unknown: 6248, unknown conditional: 0, unknown unconditional: 6248] , Statistics on independence cache: Total cache size (in pairs): 103, Positive cache size: 93, Positive conditional cache size: 0, Positive unconditional cache size: 93, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4s, 209 PlacesBefore, 34 PlacesAfterwards, 229 TransitionsBefore, 36 TransitionsAfterwards, 10510 CoEnabledTransitionPairs, 8 FixpointIterations, 65 TrivialSequentialCompositions, 149 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 51 ConcurrentYvCompositions, 18 ChoiceCompositions, 286 TotalNumberOfCompositions, 13769 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11128, independent: 10966, independent conditional: 0, independent unconditional: 10966, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6336, independent: 6288, independent conditional: 0, independent unconditional: 6288, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11128, independent: 4678, independent conditional: 0, independent unconditional: 4678, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 6336, unknown conditional: 0, unknown unconditional: 6336] , Statistics on independence cache: Total cache size (in pairs): 118, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 1691]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 324 locations, 12 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: 6.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 60 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=85occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 324 locations, 12 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: 6.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 403 IncrementalHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 0 mSDtfsCounter, 403 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=271occurred in iteration=5, InterpolantAutomatonStates: 19, 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, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 1/1 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 04:00:17,212 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...