/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 05:38:28,201 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 05:38:28,253 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 [2023-08-24 05:38:28,260 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 05:38:28,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 05:38:28,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 05:38:28,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 05:38:28,293 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 05:38:28,293 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 05:38:28,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 05:38:28,294 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 05:38:28,294 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 05:38:28,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 05:38:28,295 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 05:38:28,295 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 05:38:28,296 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 05:38:28,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 05:38:28,296 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 05:38:28,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 05:38:28,297 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 05:38:28,297 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 05:38:28,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 05:38:28,299 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 05:38:28,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 05:38:28,299 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 05:38:28,300 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 05:38:28,303 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 05:38:28,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:38:28,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 05:38:28,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 05:38:28,304 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 05:38:28,304 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 05:38:28,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 05:38:28,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 05:38:28,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 05:38:28,305 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 05:38:28,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 05:38:28,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 05:38:28,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 05:38:28,666 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 05:38:28,666 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 05:38:28,669 INFO L431 ainManager$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 [2023-08-24 05:38:29,907 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 05:38:30,246 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 05:38:30,247 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i [2023-08-24 05:38:30,270 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92d39f22a/05ea726c5058458d820c139ae91aaf56/FLAGcfc4e8e24 [2023-08-24 05:38:30,285 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92d39f22a/05ea726c5058458d820c139ae91aaf56 [2023-08-24 05:38:30,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 05:38:30,291 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 05:38:30,292 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 05:38:30,292 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 05:38:30,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 05:38:30,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:38:30" (1/1) ... [2023-08-24 05:38:30,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e276f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:38:30, skipping insertion in model container [2023-08-24 05:38:30,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:38:30" (1/1) ... [2023-08-24 05:38:30,362 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 05:38:31,050 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2023-08-24 05:38:31,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:38:31,096 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 05:38:31,120 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-24 05:38:31,122 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-24 05:38:31,127 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [729] [2023-08-24 05:38:31,154 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i[76081,76094] [2023-08-24 05:38:31,175 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:38:31,321 INFO L206 MainTranslator]: Completed translation [2023-08-24 05:38:31,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:38:31 WrapperNode [2023-08-24 05:38:31,323 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 05:38:31,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 05:38:31,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 05:38:31,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 05:38:31,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:38:31" (1/1) ... [2023-08-24 05:38:31,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:38:31" (1/1) ... [2023-08-24 05:38:31,386 INFO L138 Inliner]: procedures = 486, calls = 43, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 205 [2023-08-24 05:38:31,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 05:38:31,387 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 05:38:31,387 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 05:38:31,387 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 05:38:31,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:38:31" (1/1) ... [2023-08-24 05:38:31,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:38:31" (1/1) ... [2023-08-24 05:38:31,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:38:31" (1/1) ... [2023-08-24 05:38:31,404 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:38:31" (1/1) ... [2023-08-24 05:38:31,415 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:38:31" (1/1) ... [2023-08-24 05:38:31,424 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:38:31" (1/1) ... [2023-08-24 05:38:31,432 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:38:31" (1/1) ... [2023-08-24 05:38:31,434 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:38:31" (1/1) ... [2023-08-24 05:38:31,439 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 05:38:31,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 05:38:31,440 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 05:38:31,440 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 05:38:31,441 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:38:31" (1/1) ... [2023-08-24 05:38:31,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:38:31,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 05:38:31,513 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) [2023-08-24 05:38:31,515 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 [2023-08-24 05:38:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2023-08-24 05:38:31,539 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2023-08-24 05:38:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 05:38:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 05:38:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2023-08-24 05:38:31,540 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2023-08-24 05:38:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 05:38:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 05:38:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-24 05:38:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 05:38:31,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 05:38:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 05:38:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 05:38:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 05:38:31,544 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 05:38:31,807 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 05:38:31,809 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 05:38:31,992 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 05:38:31,999 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 05:38:31,999 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 05:38:32,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:38:32 BoogieIcfgContainer [2023-08-24 05:38:32,001 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 05:38:32,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 05:38:32,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 05:38:32,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 05:38:32,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 05:38:30" (1/3) ... [2023-08-24 05:38:32,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55af85fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:38:32, skipping insertion in model container [2023-08-24 05:38:32,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:38:31" (2/3) ... [2023-08-24 05:38:32,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55af85fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:38:32, skipping insertion in model container [2023-08-24 05:38:32,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:38:32" (3/3) ... [2023-08-24 05:38:32,009 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2023-08-24 05:38:32,021 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 05:38:32,022 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-24 05:38:32,022 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 05:38:32,103 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-24 05:38:32,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 302 transitions, 634 flow [2023-08-24 05:38:32,253 INFO L124 PetriNetUnfolderBase]: 33/309 cut-off events. [2023-08-24 05:38:32,254 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 05:38:32,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 309 events. 33/309 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 730 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 209. Up to 11 conditions per place. [2023-08-24 05:38:32,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 302 transitions, 634 flow [2023-08-24 05:38:32,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 197 transitions, 411 flow [2023-08-24 05:38:32,268 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:38:32,275 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 197 transitions, 411 flow [2023-08-24 05:38:32,278 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 197 transitions, 411 flow [2023-08-24 05:38:32,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 197 transitions, 411 flow [2023-08-24 05:38:32,325 INFO L124 PetriNetUnfolderBase]: 31/286 cut-off events. [2023-08-24 05:38:32,325 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 05:38:32,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 286 events. 31/286 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 630 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 208. Up to 11 conditions per place. [2023-08-24 05:38:32,336 INFO L119 LiptonReduction]: Number of co-enabled transitions 8880 [2023-08-24 05:38:37,829 INFO L134 LiptonReduction]: Checked pairs total: 11400 [2023-08-24 05:38:37,830 INFO L136 LiptonReduction]: Total number of compositions: 233 [2023-08-24 05:38:37,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:38:37,852 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;@492573a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:38:37,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 05:38:37,862 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:38:37,862 INFO L124 PetriNetUnfolderBase]: 9/33 cut-off events. [2023-08-24 05:38:37,862 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 05:38:37,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:37,863 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:37,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 05:38:37,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:37,870 INFO L85 PathProgramCache]: Analyzing trace with hash -919863868, now seen corresponding path program 1 times [2023-08-24 05:38:37,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:37,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364621206] [2023-08-24 05:38:37,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:37,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:38:38,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:38,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364621206] [2023-08-24 05:38:38,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364621206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:38,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:38,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:38:38,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868657053] [2023-08-24 05:38:38,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:38,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:38:38,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:38,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:38:38,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:38:38,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 535 [2023-08-24 05:38:38,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:38,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:38,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 535 [2023-08-24 05:38:38,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:38,387 INFO L124 PetriNetUnfolderBase]: 217/347 cut-off events. [2023-08-24 05:38:38,387 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-24 05:38:38,391 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 1207 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. [2023-08-24 05:38:38,392 INFO L140 encePairwiseOnDemand]: 527/535 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2023-08-24 05:38:38,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 165 flow [2023-08-24 05:38:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:38:38,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:38:38,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 804 transitions. [2023-08-24 05:38:38,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5009345794392523 [2023-08-24 05:38:38,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 804 transitions. [2023-08-24 05:38:38,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 804 transitions. [2023-08-24 05:38:38,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:38,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 804 transitions. [2023-08-24 05:38:38,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 268.0) internal successors, (804), 3 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:38,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 535.0) internal successors, (2140), 4 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:38,431 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 535.0) internal successors, (2140), 4 states have internal predecessors, (2140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:38,433 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 85 flow. Second operand 3 states and 804 transitions. [2023-08-24 05:38:38,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 165 flow [2023-08-24 05:38:38,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 155 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 05:38:38,437 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-08-24 05:38:38,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=535, 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} [2023-08-24 05:38:38,442 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2023-08-24 05:38:38,442 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-08-24 05:38:38,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:38,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-24 05:38:38,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 05:38:38,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 05:38:38,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 05:38:38,446 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:38:38,448 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-08-24 05:38:38,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 302 transitions, 634 flow [2023-08-24 05:38:38,492 INFO L124 PetriNetUnfolderBase]: 33/309 cut-off events. [2023-08-24 05:38:38,492 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 05:38:38,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 309 events. 33/309 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 730 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 209. Up to 11 conditions per place. [2023-08-24 05:38:38,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 302 transitions, 634 flow [2023-08-24 05:38:38,496 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 207 transitions, 431 flow [2023-08-24 05:38:38,496 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:38:38,496 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 207 transitions, 431 flow [2023-08-24 05:38:38,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 207 transitions, 431 flow [2023-08-24 05:38:38,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 207 transitions, 431 flow [2023-08-24 05:38:38,525 INFO L124 PetriNetUnfolderBase]: 31/296 cut-off events. [2023-08-24 05:38:38,525 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 05:38:38,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 296 events. 31/296 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 659 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 209. Up to 11 conditions per place. [2023-08-24 05:38:38,532 INFO L119 LiptonReduction]: Number of co-enabled transitions 8910 [2023-08-24 05:38:43,438 INFO L134 LiptonReduction]: Checked pairs total: 11501 [2023-08-24 05:38:43,438 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-08-24 05:38:43,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 05:38:43,441 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;@492573a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:38:43,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-24 05:38:43,442 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:38:43,442 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-24 05:38:43,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:38:43,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:43,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-24 05:38:43,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-24 05:38:43,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1166, now seen corresponding path program 1 times [2023-08-24 05:38:43,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:43,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114171781] [2023-08-24 05:38:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:43,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:38:43,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:43,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114171781] [2023-08-24 05:38:43,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114171781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:43,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:43,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-24 05:38:43,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951483453] [2023-08-24 05:38:43,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:43,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-24 05:38:43,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:43,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-24 05:38:43,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-24 05:38:43,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 549 [2023-08-24 05:38:43,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 36 transitions, 89 flow. Second operand has 2 states, 2 states have (on average 272.5) internal successors, (545), 2 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:43,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:43,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 549 [2023-08-24 05:38:43,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:43,532 INFO L124 PetriNetUnfolderBase]: 255/399 cut-off events. [2023-08-24 05:38:43,532 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-24 05:38:43,532 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 1410 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. [2023-08-24 05:38:43,534 INFO L140 encePairwiseOnDemand]: 545/549 looper letters, 28 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-08-24 05:38:43,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 137 flow [2023-08-24 05:38:43,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-24 05:38:43,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-24 05:38:43,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 576 transitions. [2023-08-24 05:38:43,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245901639344263 [2023-08-24 05:38:43,537 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 576 transitions. [2023-08-24 05:38:43,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 576 transitions. [2023-08-24 05:38:43,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:43,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 576 transitions. [2023-08-24 05:38:43,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 288.0) internal successors, (576), 2 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:43,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 549.0) internal successors, (1647), 3 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:43,542 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 549.0) internal successors, (1647), 3 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:43,542 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 89 flow. Second operand 2 states and 576 transitions. [2023-08-24 05:38:43,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 137 flow [2023-08-24 05:38:43,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 133 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 05:38:43,545 INFO L231 Difference]: Finished difference. Result has 30 places, 32 transitions, 77 flow [2023-08-24 05:38:43,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, 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} [2023-08-24 05:38:43,546 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-24 05:38:43,546 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 32 transitions, 77 flow [2023-08-24 05:38:43,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 272.5) internal successors, (545), 2 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:43,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:43,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-24 05:38:43,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 05:38:43,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-24 05:38:43,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:43,548 INFO L85 PathProgramCache]: Analyzing trace with hash -406447722, now seen corresponding path program 1 times [2023-08-24 05:38:43,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:43,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110848129] [2023-08-24 05:38:43,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:43,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:43,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:38:43,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:43,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110848129] [2023-08-24 05:38:43,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110848129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:43,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:43,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:38:43,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123877271] [2023-08-24 05:38:43,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:43,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 05:38:43,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:43,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 05:38:43,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 05:38:43,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 549 [2023-08-24 05:38:43,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 32 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 254.5) internal successors, (1018), 4 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:43,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:43,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 549 [2023-08-24 05:38:43,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:43,896 INFO L124 PetriNetUnfolderBase]: 476/744 cut-off events. [2023-08-24 05:38:43,896 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-24 05:38:43,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1500 conditions, 744 events. 476/744 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2691 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. [2023-08-24 05:38:43,899 INFO L140 encePairwiseOnDemand]: 540/549 looper letters, 52 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2023-08-24 05:38:43,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 67 transitions, 283 flow [2023-08-24 05:38:43,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 05:38:43,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 05:38:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1332 transitions. [2023-08-24 05:38:43,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852459016393443 [2023-08-24 05:38:43,903 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1332 transitions. [2023-08-24 05:38:43,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1332 transitions. [2023-08-24 05:38:43,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:43,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1332 transitions. [2023-08-24 05:38:43,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 266.4) internal successors, (1332), 5 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:43,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 549.0) internal successors, (3294), 6 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:43,912 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 549.0) internal successors, (3294), 6 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:43,913 INFO L175 Difference]: Start difference. First operand has 30 places, 32 transitions, 77 flow. Second operand 5 states and 1332 transitions. [2023-08-24 05:38:43,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 67 transitions, 283 flow [2023-08-24 05:38:43,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 67 transitions, 283 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 05:38:43,915 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 161 flow [2023-08-24 05:38:43,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, 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} [2023-08-24 05:38:43,918 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-08-24 05:38:43,919 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 161 flow [2023-08-24 05:38:43,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 254.5) internal successors, (1018), 4 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:43,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:43,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:43,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 05:38:43,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-24 05:38:43,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:43,921 INFO L85 PathProgramCache]: Analyzing trace with hash 240101681, now seen corresponding path program 1 times [2023-08-24 05:38:43,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:43,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232321665] [2023-08-24 05:38:43,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:43,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:44,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:38:44,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:44,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232321665] [2023-08-24 05:38:44,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232321665] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:44,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:44,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:38:44,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301325430] [2023-08-24 05:38:44,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:44,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:38:44,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:44,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:38:44,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:38:44,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 549 [2023-08-24 05:38:44,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 41 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:44,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 549 [2023-08-24 05:38:44,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:44,180 INFO L124 PetriNetUnfolderBase]: 536/820 cut-off events. [2023-08-24 05:38:44,181 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2023-08-24 05:38:44,182 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 43. Compared 2783 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. [2023-08-24 05:38:44,186 INFO L140 encePairwiseOnDemand]: 541/549 looper letters, 48 selfloop transitions, 11 changer transitions 2/64 dead transitions. [2023-08-24 05:38:44,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 64 transitions, 370 flow [2023-08-24 05:38:44,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:38:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:38:44,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2023-08-24 05:38:44,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544626593806923 [2023-08-24 05:38:44,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2023-08-24 05:38:44,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2023-08-24 05:38:44,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:44,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2023-08-24 05:38:44,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 549.0) internal successors, (2196), 4 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 549.0) internal successors, (2196), 4 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,196 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 161 flow. Second operand 3 states and 816 transitions. [2023-08-24 05:38:44,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 64 transitions, 370 flow [2023-08-24 05:38:44,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 64 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 05:38:44,202 INFO L231 Difference]: Finished difference. Result has 42 places, 48 transitions, 267 flow [2023-08-24 05:38:44,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, 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} [2023-08-24 05:38:44,204 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-24 05:38:44,206 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 48 transitions, 267 flow [2023-08-24 05:38:44,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:44,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:44,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 05:38:44,213 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-24 05:38:44,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:44,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1189891172, now seen corresponding path program 1 times [2023-08-24 05:38:44,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:44,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083421663] [2023-08-24 05:38:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:44,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:38:44,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:44,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083421663] [2023-08-24 05:38:44,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083421663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:44,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:44,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:38:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885323823] [2023-08-24 05:38:44,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:44,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:38:44,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:44,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:38:44,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:38:44,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 549 [2023-08-24 05:38:44,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 48 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:44,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 549 [2023-08-24 05:38:44,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:44,415 INFO L124 PetriNetUnfolderBase]: 588/888 cut-off events. [2023-08-24 05:38:44,415 INFO L125 PetriNetUnfolderBase]: For 1217/1217 co-relation queries the response was YES. [2023-08-24 05:38:44,417 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 43. Compared 3124 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. [2023-08-24 05:38:44,420 INFO L140 encePairwiseOnDemand]: 546/549 looper letters, 50 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-24 05:38:44,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 405 flow [2023-08-24 05:38:44,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:38:44,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:38:44,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 839 transitions. [2023-08-24 05:38:44,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509411050394657 [2023-08-24 05:38:44,423 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 839 transitions. [2023-08-24 05:38:44,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 839 transitions. [2023-08-24 05:38:44,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:44,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 839 transitions. [2023-08-24 05:38:44,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.6666666666667) internal successors, (839), 3 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 549.0) internal successors, (2196), 4 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 549.0) internal successors, (2196), 4 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,430 INFO L175 Difference]: Start difference. First operand has 42 places, 48 transitions, 267 flow. Second operand 3 states and 839 transitions. [2023-08-24 05:38:44,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 405 flow [2023-08-24 05:38:44,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 55 transitions, 378 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 05:38:44,437 INFO L231 Difference]: Finished difference. Result has 41 places, 49 transitions, 260 flow [2023-08-24 05:38:44,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, 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} [2023-08-24 05:38:44,438 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-24 05:38:44,438 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 49 transitions, 260 flow [2023-08-24 05:38:44,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 271.0) internal successors, (813), 3 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:44,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:44,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 05:38:44,439 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-24 05:38:44,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:44,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1149732285, now seen corresponding path program 1 times [2023-08-24 05:38:44,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:44,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031639474] [2023-08-24 05:38:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:44,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:44,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:38:44,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:44,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031639474] [2023-08-24 05:38:44,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031639474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:44,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:44,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 05:38:44,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11149373] [2023-08-24 05:38:44,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:44,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:38:44,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:44,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:38:44,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:38:44,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 549 [2023-08-24 05:38:44,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 49 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:44,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 549 [2023-08-24 05:38:44,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:44,664 INFO L124 PetriNetUnfolderBase]: 578/872 cut-off events. [2023-08-24 05:38:44,664 INFO L125 PetriNetUnfolderBase]: For 898/898 co-relation queries the response was YES. [2023-08-24 05:38:44,665 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 42. Compared 3093 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. [2023-08-24 05:38:44,669 INFO L140 encePairwiseOnDemand]: 545/549 looper letters, 45 selfloop transitions, 3 changer transitions 1/52 dead transitions. [2023-08-24 05:38:44,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 366 flow [2023-08-24 05:38:44,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:38:44,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:38:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2023-08-24 05:38:44,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851244687310261 [2023-08-24 05:38:44,672 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 799 transitions. [2023-08-24 05:38:44,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 799 transitions. [2023-08-24 05:38:44,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:44,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 799 transitions. [2023-08-24 05:38:44,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 549.0) internal successors, (2196), 4 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,681 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 549.0) internal successors, (2196), 4 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,681 INFO L175 Difference]: Start difference. First operand has 41 places, 49 transitions, 260 flow. Second operand 3 states and 799 transitions. [2023-08-24 05:38:44,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 366 flow [2023-08-24 05:38:44,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 05:38:44,685 INFO L231 Difference]: Finished difference. Result has 43 places, 49 transitions, 271 flow [2023-08-24 05:38:44,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, 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} [2023-08-24 05:38:44,686 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-08-24 05:38:44,686 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 49 transitions, 271 flow [2023-08-24 05:38:44,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:38:44,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:38:44,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 05:38:44,691 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-08-24 05:38:44,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:38:44,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1751145265, now seen corresponding path program 1 times [2023-08-24 05:38:44,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:38:44,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961292983] [2023-08-24 05:38:44,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:38:44,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:38:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 05:38:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 05:38:44,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 05:38:44,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961292983] [2023-08-24 05:38:44,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961292983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 05:38:44,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 05:38:44,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 05:38:44,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693937264] [2023-08-24 05:38:44,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 05:38:44,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 05:38:44,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 05:38:44,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 05:38:44,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 05:38:44,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 549 [2023-08-24 05:38:44,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 49 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 05:38:44,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 549 [2023-08-24 05:38:44,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 05:38:44,892 INFO L124 PetriNetUnfolderBase]: 248/395 cut-off events. [2023-08-24 05:38:44,892 INFO L125 PetriNetUnfolderBase]: For 568/568 co-relation queries the response was YES. [2023-08-24 05:38:44,893 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 1112 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. [2023-08-24 05:38:44,893 INFO L140 encePairwiseOnDemand]: 543/549 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-08-24 05:38:44,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 291 flow [2023-08-24 05:38:44,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 05:38:44,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 05:38:44,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-08-24 05:38:44,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4839101396478446 [2023-08-24 05:38:44,896 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-08-24 05:38:44,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-08-24 05:38:44,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 05:38:44,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-08-24 05:38:44,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.6666666666667) internal successors, (797), 3 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 549.0) internal successors, (2196), 4 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 549.0) internal successors, (2196), 4 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,902 INFO L175 Difference]: Start difference. First operand has 43 places, 49 transitions, 271 flow. Second operand 3 states and 797 transitions. [2023-08-24 05:38:44,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 291 flow [2023-08-24 05:38:44,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 239 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-24 05:38:44,905 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-24 05:38:44,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, 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} [2023-08-24 05:38:44,907 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-24 05:38:44,907 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-24 05:38:44,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 05:38:44,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2023-08-24 05:38:44,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-08-24 05:38:44,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-08-24 05:38:44,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-08-24 05:38:44,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2023-08-24 05:38:44,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2023-08-24 05:38:44,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2023-08-24 05:38:44,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-08-24 05:38:44,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-08-24 05:38:44,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 05:38:44,909 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-24 05:38:44,910 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (2/2) [2023-08-24 05:38:44,912 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 05:38:44,913 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 05:38:44,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 05:38:44 BasicIcfg [2023-08-24 05:38:44,918 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 05:38:44,918 INFO L158 Benchmark]: Toolchain (without parser) took 14626.97ms. Allocated memory was 362.8MB in the beginning and 591.4MB in the end (delta: 228.6MB). Free memory was 336.4MB in the beginning and 509.4MB in the end (delta: -173.0MB). Peak memory consumption was 57.4MB. Max. memory is 16.0GB. [2023-08-24 05:38:44,918 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 362.8MB. Free memory was 340.3MB in the beginning and 340.1MB in the end (delta: 195.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 05:38:44,919 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1031.26ms. Allocated memory is still 362.8MB. Free memory was 336.1MB in the beginning and 325.9MB in the end (delta: 10.2MB). Peak memory consumption was 53.0MB. Max. memory is 16.0GB. [2023-08-24 05:38:44,919 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.53ms. Allocated memory is still 362.8MB. Free memory was 325.9MB in the beginning and 322.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 05:38:44,919 INFO L158 Benchmark]: Boogie Preprocessor took 52.54ms. Allocated memory is still 362.8MB. Free memory was 322.9MB in the beginning and 319.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 05:38:44,919 INFO L158 Benchmark]: RCFGBuilder took 561.12ms. Allocated memory is still 362.8MB. Free memory was 319.9MB in the beginning and 293.9MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-24 05:38:44,920 INFO L158 Benchmark]: TraceAbstraction took 12913.67ms. Allocated memory was 362.8MB in the beginning and 591.4MB in the end (delta: 228.6MB). Free memory was 293.5MB in the beginning and 509.4MB in the end (delta: -215.8MB). Peak memory consumption was 12.8MB. Max. memory is 16.0GB. [2023-08-24 05:38:44,922 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 362.8MB. Free memory was 340.3MB in the beginning and 340.1MB in the end (delta: 195.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 1031.26ms. Allocated memory is still 362.8MB. Free memory was 336.1MB in the beginning and 325.9MB in the end (delta: 10.2MB). Peak memory consumption was 53.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 62.53ms. Allocated memory is still 362.8MB. Free memory was 325.9MB in the beginning and 322.9MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 52.54ms. Allocated memory is still 362.8MB. Free memory was 322.9MB in the beginning and 319.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 561.12ms. Allocated memory is still 362.8MB. Free memory was 319.9MB in the beginning and 293.9MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 12913.67ms. Allocated memory was 362.8MB in the beginning and 591.4MB in the end (delta: 228.6MB). Free memory was 293.5MB in the beginning and 509.4MB in the end (delta: -215.8MB). Peak memory consumption was 12.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 729]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [729] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6s, 182 PlacesBefore, 31 PlacesAfterwards, 197 TransitionsBefore, 34 TransitionsAfterwards, 8880 CoEnabledTransitionPairs, 6 FixpointIterations, 39 TrivialSequentialCompositions, 135 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 43 ConcurrentYvCompositions, 12 ChoiceCompositions, 233 TotalNumberOfCompositions, 11400 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9502, independent: 9385, independent conditional: 0, independent unconditional: 9385, dependent: 117, dependent conditional: 0, dependent unconditional: 117, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5315, independent: 5269, independent conditional: 0, independent unconditional: 5269, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9502, independent: 4116, independent conditional: 0, independent unconditional: 4116, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 5315, unknown conditional: 0, unknown unconditional: 5315] , Statistics on independence cache: Total cache size (in pairs): 115, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 192 PlacesBefore, 34 PlacesAfterwards, 207 TransitionsBefore, 36 TransitionsAfterwards, 8910 CoEnabledTransitionPairs, 6 FixpointIterations, 54 TrivialSequentialCompositions, 135 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 43 ConcurrentYvCompositions, 13 ChoiceCompositions, 247 TotalNumberOfCompositions, 11501 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9379, independent: 9252, independent conditional: 0, independent unconditional: 9252, dependent: 127, dependent conditional: 0, dependent unconditional: 127, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 5360, independent: 5313, independent conditional: 0, independent unconditional: 5313, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9379, independent: 3939, independent conditional: 0, independent unconditional: 3939, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 5360, unknown conditional: 0, unknown unconditional: 5360] , Statistics on independence cache: Total cache size (in pairs): 120, Positive cache size: 106, Positive conditional cache size: 0, Positive unconditional cache size: 106, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 297 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.3s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 297 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 403 IncrementalHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 0 mSDtfsCounter, 403 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=271occurred in iteration=5, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 05:38:44,956 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...