/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.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 10:21:19,193 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 10:21:19,270 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 10:21:19,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 10:21:19,276 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 10:21:19,306 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 10:21:19,307 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 10:21:19,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 10:21:19,308 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 10:21:19,308 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 10:21:19,309 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 10:21:19,309 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 10:21:19,309 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 10:21:19,312 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 10:21:19,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 10:21:19,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 10:21:19,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 10:21:19,314 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 10:21:19,314 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 10:21:19,314 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 10:21:19,314 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 10:21:19,315 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 10:21:19,315 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 10:21:19,316 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 10:21:19,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 10:21:19,316 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 10:21:19,317 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 10:21:19,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:21:19,317 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 10:21:19,317 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 10:21:19,318 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 10:21:19,318 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 10:21:19,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 10:21:19,319 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 10:21:19,319 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 10:21:19,319 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 10:21:19,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 10:21:19,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 10:21:19,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 10:21:19,678 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 10:21:19,679 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 10:21:19,680 INFO L431 ainManager$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 10:21:20,873 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 10:21:21,247 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 10:21:21,248 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i [2023-08-27 10:21:21,273 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b91cec2bb/3a4c6a3dcd344bec93ff0e353c0acdd1/FLAG9bb907ce5 [2023-08-27 10:21:21,286 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b91cec2bb/3a4c6a3dcd344bec93ff0e353c0acdd1 [2023-08-27 10:21:21,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 10:21:21,292 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 10:21:21,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 10:21:21,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 10:21:21,296 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 10:21:21,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:21:21" (1/1) ... [2023-08-27 10:21:21,298 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404ef176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:21:21, skipping insertion in model container [2023-08-27 10:21:21,298 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:21:21" (1/1) ... [2023-08-27 10:21:21,361 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 10:21:22,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:21:22,112 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 10:21:22,131 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-27 10:21:22,133 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-27 10:21:22,138 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [729] [2023-08-27 10:21:22,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:21:22,255 INFO L206 MainTranslator]: Completed translation [2023-08-27 10:21:22,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:21:22 WrapperNode [2023-08-27 10:21:22,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 10:21:22,257 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 10:21:22,257 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 10:21:22,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 10:21:22,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:21:22" (1/1) ... [2023-08-27 10:21:22,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:21:22" (1/1) ... [2023-08-27 10:21:22,327 INFO L138 Inliner]: procedures = 486, calls = 44, calls flagged for inlining = 16, calls inlined = 21, statements flattened = 223 [2023-08-27 10:21:22,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 10:21:22,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 10:21:22,329 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 10:21:22,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 10:21:22,337 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:21:22" (1/1) ... [2023-08-27 10:21:22,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:21:22" (1/1) ... [2023-08-27 10:21:22,342 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:21:22" (1/1) ... [2023-08-27 10:21:22,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:21:22" (1/1) ... [2023-08-27 10:21:22,354 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:21:22" (1/1) ... [2023-08-27 10:21:22,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:21:22" (1/1) ... [2023-08-27 10:21:22,362 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:21:22" (1/1) ... [2023-08-27 10:21:22,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:21:22" (1/1) ... [2023-08-27 10:21:22,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 10:21:22,371 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 10:21:22,371 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 10:21:22,371 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 10:21:22,372 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:21:22" (1/1) ... [2023-08-27 10:21:22,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:21:22,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 10:21:22,426 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 10:21:22,431 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 10:21:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2023-08-27 10:21:22,455 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2023-08-27 10:21:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 10:21:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 10:21:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2023-08-27 10:21:22,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2023-08-27 10:21:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 10:21:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 10:21:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-27 10:21:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 10:21:22,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 10:21:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 10:21:22,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 10:21:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 10:21:22,458 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 10:21:22,689 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 10:21:22,690 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 10:21:22,898 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 10:21:22,905 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 10:21:22,906 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 10:21:22,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:21:22 BoogieIcfgContainer [2023-08-27 10:21:22,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 10:21:22,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 10:21:22,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 10:21:22,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 10:21:22,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:21:21" (1/3) ... [2023-08-27 10:21:22,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abeac32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:21:22, skipping insertion in model container [2023-08-27 10:21:22,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:21:22" (2/3) ... [2023-08-27 10:21:22,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4abeac32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:21:22, skipping insertion in model container [2023-08-27 10:21:22,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:21:22" (3/3) ... [2023-08-27 10:21:22,916 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2023-08-27 10:21:22,929 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 10:21:22,930 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-27 10:21:22,930 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 10:21:23,051 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-27 10:21:23,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 334 transitions, 698 flow [2023-08-27 10:21:23,224 INFO L124 PetriNetUnfolderBase]: 41/341 cut-off events. [2023-08-27 10:21:23,225 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 10:21:23,233 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 10:21:23,233 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 334 transitions, 698 flow [2023-08-27 10:21:23,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 229 transitions, 475 flow [2023-08-27 10:21:23,243 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 10:21:23,250 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 229 transitions, 475 flow [2023-08-27 10:21:23,252 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 229 transitions, 475 flow [2023-08-27 10:21:23,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 229 transitions, 475 flow [2023-08-27 10:21:23,305 INFO L124 PetriNetUnfolderBase]: 38/326 cut-off events. [2023-08-27 10:21:23,306 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 10:21:23,308 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 10:21:23,316 INFO L119 LiptonReduction]: Number of co-enabled transitions 10510 [2023-08-27 10:21:29,397 INFO L134 LiptonReduction]: Checked pairs total: 13325 [2023-08-27 10:21:29,397 INFO L136 LiptonReduction]: Total number of compositions: 289 [2023-08-27 10:21:29,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 10:21:29,414 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;@2cac1adf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 10:21:29,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-27 10:21:29,416 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 10:21:29,416 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-27 10:21:29,416 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:21:29,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:21:29,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-27 10:21:29,417 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread_usbErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-27 10:21:29,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:21:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1054, now seen corresponding path program 1 times [2023-08-27 10:21:29,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:21:29,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352775826] [2023-08-27 10:21:29,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:21:29,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:21:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:21:29,628 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 10:21:29,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:21:29,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352775826] [2023-08-27 10:21:29,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352775826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:21:29,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:21:29,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-27 10:21:29,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899172470] [2023-08-27 10:21:29,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:21:29,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 10:21:29,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:21:29,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 10:21:29,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 10:21:29,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 623 [2023-08-27 10:21:29,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 37 transitions, 91 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 10:21:29,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:21:29,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 623 [2023-08-27 10:21:29,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:21:29,806 INFO L124 PetriNetUnfolderBase]: 255/399 cut-off events. [2023-08-27 10:21:29,806 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 10:21:29,809 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 1407 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 10:21:29,813 INFO L140 encePairwiseOnDemand]: 618/623 looper letters, 28 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-08-27 10:21:29,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 137 flow [2023-08-27 10:21:29,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 10:21:29,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 10:21:29,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 625 transitions. [2023-08-27 10:21:29,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016051364365971 [2023-08-27 10:21:29,835 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 625 transitions. [2023-08-27 10:21:29,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 625 transitions. [2023-08-27 10:21:29,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:21:29,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 625 transitions. [2023-08-27 10:21:29,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 312.5) internal successors, (625), 2 states have internal predecessors, (625), 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 10:21:29,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 623.0) internal successors, (1869), 3 states have internal predecessors, (1869), 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 10:21:29,854 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 623.0) internal successors, (1869), 3 states have internal predecessors, (1869), 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 10:21:29,856 INFO L175 Difference]: Start difference. First operand has 34 places, 37 transitions, 91 flow. Second operand 2 states and 625 transitions. [2023-08-27 10:21:29,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 137 flow [2023-08-27 10:21:29,859 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 10:21:29,861 INFO L231 Difference]: Finished difference. Result has 30 places, 32 transitions, 77 flow [2023-08-27 10:21:29,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, 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 10:21:29,868 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-27 10:21:29,868 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 32 transitions, 77 flow [2023-08-27 10:21:29,869 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 10:21:29,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:21:29,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 10:21:29,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 10:21:29,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_usbErr1ASSERT_VIOLATIONASSERT === [thread_usbErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-27 10:21:29,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:21:29,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1012989627, now seen corresponding path program 1 times [2023-08-27 10:21:29,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:21:29,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321191888] [2023-08-27 10:21:29,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:21:29,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:21:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:21:30,091 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 10:21:30,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:21:30,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321191888] [2023-08-27 10:21:30,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321191888] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:21:30,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:21:30,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:21:30,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682263958] [2023-08-27 10:21:30,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:21:30,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:21:30,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:21:30,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:21:30,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:21:30,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 623 [2023-08-27 10:21:30,098 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 10:21:30,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:21:30,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 623 [2023-08-27 10:21:30,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:21:30,284 INFO L124 PetriNetUnfolderBase]: 476/744 cut-off events. [2023-08-27 10:21:30,284 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 10:21:30,285 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 41. Compared 2694 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 10:21:30,289 INFO L140 encePairwiseOnDemand]: 614/623 looper letters, 52 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2023-08-27 10:21:30,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 67 transitions, 283 flow [2023-08-27 10:21:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:21:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:21:30,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1452 transitions. [2023-08-27 10:21:30,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46613162118780094 [2023-08-27 10:21:30,293 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1452 transitions. [2023-08-27 10:21:30,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1452 transitions. [2023-08-27 10:21:30,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:21:30,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1452 transitions. [2023-08-27 10:21:30,297 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 10:21:30,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 623.0) internal successors, (3738), 6 states have internal predecessors, (3738), 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 10:21:30,305 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 623.0) internal successors, (3738), 6 states have internal predecessors, (3738), 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 10:21:30,305 INFO L175 Difference]: Start difference. First operand has 30 places, 32 transitions, 77 flow. Second operand 5 states and 1452 transitions. [2023-08-27 10:21:30,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 67 transitions, 283 flow [2023-08-27 10:21:30,306 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 10:21:30,307 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 161 flow [2023-08-27 10:21:30,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, 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 10:21:30,308 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-08-27 10:21:30,309 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 161 flow [2023-08-27 10:21:30,309 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 10:21:30,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:21:30,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:21:30,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 10:21:30,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread_ath9kErr0ASSERT_VIOLATIONASSERT === [thread_usbErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-27 10:21:30,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:21:30,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1451971152, now seen corresponding path program 1 times [2023-08-27 10:21:30,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:21:30,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001025914] [2023-08-27 10:21:30,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:21:30,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:21:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:21:30,400 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 10:21:30,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:21:30,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001025914] [2023-08-27 10:21:30,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001025914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:21:30,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:21:30,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:21:30,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128454549] [2023-08-27 10:21:30,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:21:30,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:21:30,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:21:30,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:21:30,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:21:30,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 623 [2023-08-27 10:21:30,405 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 10:21:30,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:21:30,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 623 [2023-08-27 10:21:30,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:21:30,544 INFO L124 PetriNetUnfolderBase]: 536/820 cut-off events. [2023-08-27 10:21:30,544 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2023-08-27 10:21:30,545 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 2777 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 10:21:30,549 INFO L140 encePairwiseOnDemand]: 615/623 looper letters, 48 selfloop transitions, 11 changer transitions 2/64 dead transitions. [2023-08-27 10:21:30,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 64 transitions, 370 flow [2023-08-27 10:21:30,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:21:30,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:21:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 888 transitions. [2023-08-27 10:21:30,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4751203852327448 [2023-08-27 10:21:30,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 888 transitions. [2023-08-27 10:21:30,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 888 transitions. [2023-08-27 10:21:30,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:21:30,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 888 transitions. [2023-08-27 10:21:30,555 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 10:21:30,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 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 10:21:30,560 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 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 10:21:30,560 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 161 flow. Second operand 3 states and 888 transitions. [2023-08-27 10:21:30,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 64 transitions, 370 flow [2023-08-27 10:21:30,563 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 10:21:30,564 INFO L231 Difference]: Finished difference. Result has 42 places, 48 transitions, 267 flow [2023-08-27 10:21:30,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, 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 10:21:30,565 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-27 10:21:30,565 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 48 transitions, 267 flow [2023-08-27 10:21:30,566 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 10:21:30,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:21:30,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:21:30,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 10:21:30,566 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_ath9kErr0ASSERT_VIOLATIONASSERT === [thread_usbErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-27 10:21:30,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:21:30,567 INFO L85 PathProgramCache]: Analyzing trace with hash 520343467, now seen corresponding path program 1 times [2023-08-27 10:21:30,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:21:30,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547067893] [2023-08-27 10:21:30,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:21:30,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:21:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:21:30,637 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 10:21:30,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:21:30,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547067893] [2023-08-27 10:21:30,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547067893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:21:30,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:21:30,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:21:30,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523336035] [2023-08-27 10:21:30,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:21:30,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:21:30,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:21:30,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:21:30,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:21:30,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 623 [2023-08-27 10:21:30,641 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 10:21:30,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:21:30,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 623 [2023-08-27 10:21:30,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:21:30,836 INFO L124 PetriNetUnfolderBase]: 588/888 cut-off events. [2023-08-27 10:21:30,836 INFO L125 PetriNetUnfolderBase]: For 1217/1217 co-relation queries the response was YES. [2023-08-27 10:21:30,837 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 3083 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 10:21:30,842 INFO L140 encePairwiseOnDemand]: 620/623 looper letters, 50 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-27 10:21:30,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 405 flow [2023-08-27 10:21:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:21:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:21:30,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 911 transitions. [2023-08-27 10:21:30,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48742643124665597 [2023-08-27 10:21:30,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 911 transitions. [2023-08-27 10:21:30,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 911 transitions. [2023-08-27 10:21:30,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:21:30,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 911 transitions. [2023-08-27 10:21:30,848 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 10:21:30,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 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 10:21:30,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 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 10:21:30,853 INFO L175 Difference]: Start difference. First operand has 42 places, 48 transitions, 267 flow. Second operand 3 states and 911 transitions. [2023-08-27 10:21:30,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 405 flow [2023-08-27 10:21:30,858 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 10:21:30,859 INFO L231 Difference]: Finished difference. Result has 41 places, 49 transitions, 260 flow [2023-08-27 10:21:30,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, 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 10:21:30,860 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-27 10:21:30,860 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 49 transitions, 260 flow [2023-08-27 10:21:30,861 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 10:21:30,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:21:30,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:21:30,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 10:21:30,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [thread_usbErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-27 10:21:30,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:21:30,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1222000257, now seen corresponding path program 1 times [2023-08-27 10:21:30,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:21:30,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531122170] [2023-08-27 10:21:30,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:21:30,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:21:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:21:31,006 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 10:21:31,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:21:31,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531122170] [2023-08-27 10:21:31,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531122170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:21:31,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:21:31,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:21:31,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366805303] [2023-08-27 10:21:31,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:21:31,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:21:31,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:21:31,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:21:31,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:21:31,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 623 [2023-08-27 10:21:31,011 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 10:21:31,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:21:31,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 623 [2023-08-27 10:21:31,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:21:31,163 INFO L124 PetriNetUnfolderBase]: 578/872 cut-off events. [2023-08-27 10:21:31,167 INFO L125 PetriNetUnfolderBase]: For 898/898 co-relation queries the response was YES. [2023-08-27 10:21:31,170 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 3041 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 10:21:31,174 INFO L140 encePairwiseOnDemand]: 619/623 looper letters, 45 selfloop transitions, 3 changer transitions 1/52 dead transitions. [2023-08-27 10:21:31,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 366 flow [2023-08-27 10:21:31,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:21:31,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:21:31,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 871 transitions. [2023-08-27 10:21:31,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46602461209202783 [2023-08-27 10:21:31,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 871 transitions. [2023-08-27 10:21:31,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 871 transitions. [2023-08-27 10:21:31,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:21:31,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 871 transitions. [2023-08-27 10:21:31,180 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 10:21:31,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 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 10:21:31,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 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 10:21:31,184 INFO L175 Difference]: Start difference. First operand has 41 places, 49 transitions, 260 flow. Second operand 3 states and 871 transitions. [2023-08-27 10:21:31,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 366 flow [2023-08-27 10:21:31,186 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 10:21:31,187 INFO L231 Difference]: Finished difference. Result has 43 places, 49 transitions, 271 flow [2023-08-27 10:21:31,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, 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 10:21:31,190 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-27 10:21:31,190 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 49 transitions, 271 flow [2023-08-27 10:21:31,191 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 10:21:31,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:21:31,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:21:31,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 10:21:31,192 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_ath9kErr0ASSERT_VIOLATIONASSERT === [thread_usbErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 6 more)] === [2023-08-27 10:21:31,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:21:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1054529428, now seen corresponding path program 1 times [2023-08-27 10:21:31,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:21:31,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188740274] [2023-08-27 10:21:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:21:31,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:21:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:21:31,259 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 10:21:31,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:21:31,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188740274] [2023-08-27 10:21:31,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188740274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:21:31,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:21:31,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:21:31,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757635532] [2023-08-27 10:21:31,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:21:31,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:21:31,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:21:31,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:21:31,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:21:31,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 623 [2023-08-27 10:21:31,263 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 10:21:31,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:21:31,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 623 [2023-08-27 10:21:31,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:21:31,347 INFO L124 PetriNetUnfolderBase]: 248/395 cut-off events. [2023-08-27 10:21:31,347 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2023-08-27 10:21:31,348 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 1099 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 10:21:31,349 INFO L140 encePairwiseOnDemand]: 617/623 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-08-27 10:21:31,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 291 flow [2023-08-27 10:21:31,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:21:31,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:21:31,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 869 transitions. [2023-08-27 10:21:31,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649545211342964 [2023-08-27 10:21:31,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 869 transitions. [2023-08-27 10:21:31,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 869 transitions. [2023-08-27 10:21:31,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:21:31,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 869 transitions. [2023-08-27 10:21:31,354 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 10:21:31,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 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 10:21:31,359 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 623.0) internal successors, (2492), 4 states have internal predecessors, (2492), 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 10:21:31,359 INFO L175 Difference]: Start difference. First operand has 43 places, 49 transitions, 271 flow. Second operand 3 states and 869 transitions. [2023-08-27 10:21:31,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 291 flow [2023-08-27 10:21:31,361 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 10:21:31,362 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-27 10:21:31,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=623, 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 10:21:31,362 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-27 10:21:31,362 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-27 10:21:31,363 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 10:21:31,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONASSERT (8 of 9 remaining) [2023-08-27 10:21:31,365 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (7 of 9 remaining) [2023-08-27 10:21:31,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (6 of 9 remaining) [2023-08-27 10:21:31,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONASSERT (5 of 9 remaining) [2023-08-27 10:21:31,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONASSERT (4 of 9 remaining) [2023-08-27 10:21:31,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 9 remaining) [2023-08-27 10:21:31,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONASSERT (2 of 9 remaining) [2023-08-27 10:21:31,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONASSERT (1 of 9 remaining) [2023-08-27 10:21:31,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONASSERT (0 of 9 remaining) [2023-08-27 10:21:31,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 10:21:31,367 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-27 10:21:31,368 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-27 10:21:31,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 334 transitions, 698 flow [2023-08-27 10:21:31,401 INFO L124 PetriNetUnfolderBase]: 41/341 cut-off events. [2023-08-27 10:21:31,401 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 10:21:31,403 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 10:21:31,403 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 334 transitions, 698 flow [2023-08-27 10:21:31,405 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 217 transitions, 451 flow [2023-08-27 10:21:31,405 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 10:21:31,405 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 217 transitions, 451 flow [2023-08-27 10:21:31,405 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 217 transitions, 451 flow [2023-08-27 10:21:31,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 217 transitions, 451 flow [2023-08-27 10:21:31,430 INFO L124 PetriNetUnfolderBase]: 38/314 cut-off events. [2023-08-27 10:21:31,430 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 10:21:31,431 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 10:21:31,437 INFO L119 LiptonReduction]: Number of co-enabled transitions 10480 [2023-08-27 10:21:36,654 INFO L134 LiptonReduction]: Checked pairs total: 13623 [2023-08-27 10:21:36,654 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-08-27 10:21:36,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 10:21:36,657 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;@2cac1adf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 10:21:36,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-27 10:21:36,661 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 10:21:36,661 INFO L124 PetriNetUnfolderBase]: 9/33 cut-off events. [2023-08-27 10:21:36,662 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 10:21:36,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:21:36,662 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:21:36,662 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 10:21:36,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:21:36,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1316090762, now seen corresponding path program 1 times [2023-08-27 10:21:36,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:21:36,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976602529] [2023-08-27 10:21:36,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:21:36,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:21:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:21:36,740 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 10:21:36,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:21:36,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976602529] [2023-08-27 10:21:36,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976602529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:21:36,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:21:36,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:21:36,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416563347] [2023-08-27 10:21:36,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:21:36,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:21:36,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:21:36,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:21:36,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:21:36,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 611 [2023-08-27 10:21:36,749 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 10:21:36,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:21:36,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 611 [2023-08-27 10:21:36,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:21:36,824 INFO L124 PetriNetUnfolderBase]: 217/347 cut-off events. [2023-08-27 10:21:36,824 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 10:21:36,825 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 1212 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 10:21:36,825 INFO L140 encePairwiseOnDemand]: 603/611 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2023-08-27 10:21:36,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 165 flow [2023-08-27 10:21:36,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:21:36,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:21:36,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 876 transitions. [2023-08-27 10:21:36,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779050736497545 [2023-08-27 10:21:36,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 876 transitions. [2023-08-27 10:21:36,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 876 transitions. [2023-08-27 10:21:36,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:21:36,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 876 transitions. [2023-08-27 10:21:36,831 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 10:21:36,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 10:21:36,836 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 611.0) internal successors, (2444), 4 states have internal predecessors, (2444), 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 10:21:36,836 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 85 flow. Second operand 3 states and 876 transitions. [2023-08-27 10:21:36,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 165 flow [2023-08-27 10:21:36,837 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 10:21:36,837 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-08-27 10:21:36,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=611, 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 10:21:36,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2023-08-27 10:21:36,838 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-08-27 10:21:36,839 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 10:21:36,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-27 10:21:36,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-27 10:21:36,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-27 10:21:36,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 10:21:36,840 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 10:21:36,840 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (2/2) [2023-08-27 10:21:36,841 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 10:21:36,841 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 10:21:36,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:21:36 BasicIcfg [2023-08-27 10:21:36,846 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 10:21:36,847 INFO L158 Benchmark]: Toolchain (without parser) took 15555.11ms. Allocated memory was 419.4MB in the beginning and 610.3MB in the end (delta: 190.8MB). Free memory was 392.1MB in the beginning and 256.0MB in the end (delta: 136.1MB). Peak memory consumption was 328.6MB. Max. memory is 16.0GB. [2023-08-27 10:21:36,847 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 419.4MB. Free memory was 396.6MB in the beginning and 396.5MB in the end (delta: 82.6kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:21:36,847 INFO L158 Benchmark]: CACSL2BoogieTranslator took 962.42ms. Allocated memory is still 419.4MB. Free memory was 392.1MB in the beginning and 335.5MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.0GB. [2023-08-27 10:21:36,848 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.98ms. Allocated memory is still 419.4MB. Free memory was 335.5MB in the beginning and 331.9MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:21:36,848 INFO L158 Benchmark]: Boogie Preprocessor took 41.51ms. Allocated memory is still 419.4MB. Free memory was 331.3MB in the beginning and 328.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:21:36,848 INFO L158 Benchmark]: RCFGBuilder took 537.81ms. Allocated memory is still 419.4MB. Free memory was 328.6MB in the beginning and 302.8MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-27 10:21:36,849 INFO L158 Benchmark]: TraceAbstraction took 13936.10ms. Allocated memory was 419.4MB in the beginning and 610.3MB in the end (delta: 190.8MB). Free memory was 301.9MB in the beginning and 256.0MB in the end (delta: 45.9MB). Peak memory consumption was 238.4MB. Max. memory is 16.0GB. [2023-08-27 10:21:36,851 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 419.4MB. Free memory was 396.6MB in the beginning and 396.5MB in the end (delta: 82.6kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 962.42ms. Allocated memory is still 419.4MB. Free memory was 392.1MB in the beginning and 335.5MB in the end (delta: 56.6MB). Peak memory consumption was 56.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 70.98ms. Allocated memory is still 419.4MB. Free memory was 335.5MB in the beginning and 331.9MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 41.51ms. Allocated memory is still 419.4MB. Free memory was 331.3MB in the beginning and 328.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 537.81ms. Allocated memory is still 419.4MB. Free memory was 328.6MB in the beginning and 302.8MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 13936.10ms. Allocated memory was 419.4MB in the beginning and 610.3MB in the end (delta: 190.8MB). Free memory was 301.9MB in the beginning and 256.0MB in the end (delta: 45.9MB). Peak memory consumption was 238.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 729]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [729] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.1s, 209 PlacesBefore, 34 PlacesAfterwards, 229 TransitionsBefore, 37 TransitionsAfterwards, 10510 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 157 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 50 ConcurrentYvCompositions, 17 ChoiceCompositions, 289 TotalNumberOfCompositions, 13325 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10823, independent: 10685, independent conditional: 0, independent unconditional: 10685, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6365, independent: 6312, independent conditional: 0, independent unconditional: 6312, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10823, independent: 4373, independent conditional: 0, independent unconditional: 4373, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 6365, unknown conditional: 0, unknown unconditional: 6365] , Statistics on independence cache: Total cache size (in pairs): 106, Positive cache size: 90, Positive conditional cache size: 0, Positive unconditional cache size: 90, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 197 PlacesBefore, 31 PlacesAfterwards, 217 TransitionsBefore, 34 TransitionsAfterwards, 10480 CoEnabledTransitionPairs, 7 FixpointIterations, 48 TrivialSequentialCompositions, 150 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 53 ConcurrentYvCompositions, 17 ChoiceCompositions, 277 TotalNumberOfCompositions, 13623 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11147, independent: 10998, independent conditional: 0, independent unconditional: 10998, dependent: 149, dependent conditional: 0, dependent unconditional: 149, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6368, independent: 6313, independent conditional: 0, independent unconditional: 6313, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11147, independent: 4685, independent conditional: 0, independent unconditional: 4685, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 6368, unknown conditional: 0, unknown unconditional: 6368] , Statistics on independence cache: Total cache size (in pairs): 122, Positive cache size: 109, Positive conditional cache size: 0, Positive unconditional cache size: 109, 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 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: 8.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 403 IncrementalHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 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, 0.1s SatisfiabilityAnalysisTime, 0.5s 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 - 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: 5.5s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.0s 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 10:21:36,881 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...