/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.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -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-b8dbc81 [2023-01-28 00:50:36,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 00:50:36,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 00:50:36,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 00:50:36,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 00:50:36,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 00:50:36,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 00:50:36,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 00:50:36,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 00:50:36,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 00:50:36,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 00:50:36,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 00:50:36,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 00:50:36,730 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 00:50:36,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 00:50:36,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 00:50:36,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 00:50:36,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 00:50:36,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 00:50:36,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 00:50:36,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 00:50:36,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 00:50:36,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 00:50:36,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 00:50:36,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 00:50:36,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 00:50:36,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 00:50:36,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 00:50:36,750 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 00:50:36,764 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 00:50:36,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 00:50:36,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 00:50:36,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 00:50:36,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 00:50:36,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 00:50:36,765 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 00:50:36,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 00:50:36,765 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 00:50:36,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 00:50:36,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 00:50:36,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 00:50:36,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 00:50:36,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 00:50:36,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 00:50:36,766 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 00:50:36,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 00:50:36,766 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 00:50:36,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 00:50:36,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 00:50:36,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 00:50:36,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 00:50:36,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 00:50:36,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:50:36,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 00:50:36,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 00:50:36,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 00:50:36,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 00:50:36,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 00:50:36,767 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 00:50:36,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 00:50:36,767 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 00:50:36,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 00:50:36,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 00:50:36,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 00:50:36,965 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 00:50:36,966 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 00:50:36,967 INFO L432 ainManager$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 [2023-01-28 00:50:37,907 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 00:50:38,150 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 00:50:38,150 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-4_1-thread_local_vars.i [2023-01-28 00:50:38,167 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c2b3619/a39beb3bfdb94c7ab8651f76ee5475d2/FLAGa476dfa03 [2023-01-28 00:50:38,177 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2c2b3619/a39beb3bfdb94c7ab8651f76ee5475d2 [2023-01-28 00:50:38,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 00:50:38,181 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 00:50:38,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 00:50:38,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 00:50:38,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 00:50:38,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:50:38" (1/1) ... [2023-01-28 00:50:38,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4afaa9d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:38, skipping insertion in model container [2023-01-28 00:50:38,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 12:50:38" (1/1) ... [2023-01-28 00:50:38,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 00:50:38,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 00:50:38,618 WARN L247 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] [2023-01-28 00:50:38,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:50:38,655 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 00:50:38,679 WARN L247 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] [2023-01-28 00:50:38,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 00:50:38,759 INFO L208 MainTranslator]: Completed translation [2023-01-28 00:50:38,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:38 WrapperNode [2023-01-28 00:50:38,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 00:50:38,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 00:50:38,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 00:50:38,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 00:50:38,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:38" (1/1) ... [2023-01-28 00:50:38,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:38" (1/1) ... [2023-01-28 00:50:38,805 INFO L138 Inliner]: procedures = 486, calls = 43, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 205 [2023-01-28 00:50:38,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 00:50:38,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 00:50:38,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 00:50:38,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 00:50:38,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:38" (1/1) ... [2023-01-28 00:50:38,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:38" (1/1) ... [2023-01-28 00:50:38,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:38" (1/1) ... [2023-01-28 00:50:38,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:38" (1/1) ... [2023-01-28 00:50:38,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:38" (1/1) ... [2023-01-28 00:50:38,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:38" (1/1) ... [2023-01-28 00:50:38,836 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:38" (1/1) ... [2023-01-28 00:50:38,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:38" (1/1) ... [2023-01-28 00:50:38,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 00:50:38,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 00:50:38,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 00:50:38,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 00:50:38,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:38" (1/1) ... [2023-01-28 00:50:38,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 00:50:38,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:50:38,863 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) [2023-01-28 00:50:38,871 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 [2023-01-28 00:50:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread_usb [2023-01-28 00:50:38,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_usb [2023-01-28 00:50:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 00:50:38,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 00:50:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure thread_ath9k [2023-01-28 00:50:38,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_ath9k [2023-01-28 00:50:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 00:50:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 00:50:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 00:50:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 00:50:38,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 00:50:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 00:50:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 00:50:38,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 00:50:38,894 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 00:50:39,137 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 00:50:39,139 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 00:50:39,309 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 00:50:39,315 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 00:50:39,316 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 00:50:39,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:50:39 BoogieIcfgContainer [2023-01-28 00:50:39,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 00:50:39,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 00:50:39,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 00:50:39,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 00:50:39,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 12:50:38" (1/3) ... [2023-01-28 00:50:39,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76908231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:50:39, skipping insertion in model container [2023-01-28 00:50:39,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 12:50:38" (2/3) ... [2023-01-28 00:50:39,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76908231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 12:50:39, skipping insertion in model container [2023-01-28 00:50:39,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 12:50:39" (3/3) ... [2023-01-28 00:50:39,322 INFO L112 eAbstractionObserver]: Analyzing ICFG race-4_1-thread_local_vars.i [2023-01-28 00:50:39,334 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 00:50:39,334 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-01-28 00:50:39,334 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 00:50:39,386 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-01-28 00:50:39,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 302 transitions, 634 flow [2023-01-28 00:50:39,475 INFO L130 PetriNetUnfolder]: 33/309 cut-off events. [2023-01-28 00:50:39,476 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 00:50:39,480 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. [2023-01-28 00:50:39,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 302 transitions, 634 flow [2023-01-28 00:50:39,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 197 transitions, 411 flow [2023-01-28 00:50:39,487 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:50:39,493 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 197 transitions, 411 flow [2023-01-28 00:50:39,495 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 197 transitions, 411 flow [2023-01-28 00:50:39,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 197 transitions, 411 flow [2023-01-28 00:50:39,550 INFO L130 PetriNetUnfolder]: 31/286 cut-off events. [2023-01-28 00:50:39,550 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 00:50:39,552 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. [2023-01-28 00:50:39,555 INFO L119 LiptonReduction]: Number of co-enabled transitions 8880 [2023-01-28 00:50:43,791 INFO L134 LiptonReduction]: Checked pairs total: 11400 [2023-01-28 00:50:43,792 INFO L136 LiptonReduction]: Total number of compositions: 233 [2023-01-28 00:50:43,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 00:50:43,805 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;@4894d91, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:50:43,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 00:50:43,809 INFO L130 PetriNetUnfolder]: 9/33 cut-off events. [2023-01-28 00:50:43,810 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 00:50:43,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:43,810 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:43,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 00:50:43,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:43,814 INFO L85 PathProgramCache]: Analyzing trace with hash -919863868, now seen corresponding path program 1 times [2023-01-28 00:50:43,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:43,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724620341] [2023-01-28 00:50:43,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:43,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:44,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:44,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:44,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724620341] [2023-01-28 00:50:44,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724620341] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:44,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:44,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:50:44,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988800269] [2023-01-28 00:50:44,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:44,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:44,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:44,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:44,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:44,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 535 [2023-01-28 00:50:44,111 INFO L100 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) [2023-01-28 00:50:44,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:44,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 535 [2023-01-28 00:50:44,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:44,202 INFO L130 PetriNetUnfolder]: 217/347 cut-off events. [2023-01-28 00:50:44,202 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-01-28 00:50:44,205 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. [2023-01-28 00:50:44,206 INFO L137 encePairwiseOnDemand]: 527/535 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2023-01-28 00:50:44,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 165 flow [2023-01-28 00:50:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:44,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 804 transitions. [2023-01-28 00:50:44,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5009345794392523 [2023-01-28 00:50:44,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 804 transitions. [2023-01-28 00:50:44,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 804 transitions. [2023-01-28 00:50:44,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:44,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 804 transitions. [2023-01-28 00:50:44,230 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) [2023-01-28 00:50:44,235 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) [2023-01-28 00:50:44,236 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) [2023-01-28 00:50:44,237 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 85 flow. Second operand 3 states and 804 transitions. [2023-01-28 00:50:44,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 165 flow [2023-01-28 00:50:44,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 39 transitions, 155 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 00:50:44,241 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-01-28 00:50:44,242 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} [2023-01-28 00:50:44,244 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -3 predicate places. [2023-01-28 00:50:44,244 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-01-28 00:50:44,245 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) [2023-01-28 00:50:44,246 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-01-28 00:50:44,246 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbThread1of1ForFork0Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 00:50:44,247 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 00:50:44,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 00:50:44,247 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 00:50:44,250 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-01-28 00:50:44,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 302 transitions, 634 flow [2023-01-28 00:50:44,274 INFO L130 PetriNetUnfolder]: 33/309 cut-off events. [2023-01-28 00:50:44,274 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 00:50:44,275 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. [2023-01-28 00:50:44,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 302 transitions, 634 flow [2023-01-28 00:50:44,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 207 transitions, 431 flow [2023-01-28 00:50:44,277 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 00:50:44,277 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 207 transitions, 431 flow [2023-01-28 00:50:44,277 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 207 transitions, 431 flow [2023-01-28 00:50:44,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 207 transitions, 431 flow [2023-01-28 00:50:44,295 INFO L130 PetriNetUnfolder]: 31/296 cut-off events. [2023-01-28 00:50:44,295 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 00:50:44,298 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. [2023-01-28 00:50:44,303 INFO L119 LiptonReduction]: Number of co-enabled transitions 8910 [2023-01-28 00:50:48,157 INFO L134 LiptonReduction]: Checked pairs total: 11501 [2023-01-28 00:50:48,158 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-01-28 00:50:48,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 00:50:48,160 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;@4894d91, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 00:50:48,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-01-28 00:50:48,160 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-01-28 00:50:48,160 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 00:50:48,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:48,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-01-28 00:50:48,160 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)] === [2023-01-28 00:50:48,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:48,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1166, now seen corresponding path program 1 times [2023-01-28 00:50:48,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:48,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900794529] [2023-01-28 00:50:48,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:48,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:48,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:48,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:48,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900794529] [2023-01-28 00:50:48,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900794529] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:48,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:48,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-01-28 00:50:48,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018280757] [2023-01-28 00:50:48,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:48,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 00:50:48,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:48,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 00:50:48,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 00:50:48,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 549 [2023-01-28 00:50:48,178 INFO L100 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) [2023-01-28 00:50:48,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:48,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 549 [2023-01-28 00:50:48,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:48,221 INFO L130 PetriNetUnfolder]: 255/399 cut-off events. [2023-01-28 00:50:48,221 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-01-28 00:50:48,222 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. [2023-01-28 00:50:48,223 INFO L137 encePairwiseOnDemand]: 545/549 looper letters, 28 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-01-28 00:50:48,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 137 flow [2023-01-28 00:50:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 00:50:48,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 00:50:48,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 576 transitions. [2023-01-28 00:50:48,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245901639344263 [2023-01-28 00:50:48,224 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 576 transitions. [2023-01-28 00:50:48,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 576 transitions. [2023-01-28 00:50:48,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:48,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 576 transitions. [2023-01-28 00:50:48,226 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) [2023-01-28 00:50:48,227 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) [2023-01-28 00:50:48,228 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) [2023-01-28 00:50:48,228 INFO L175 Difference]: Start difference. First operand has 34 places, 36 transitions, 89 flow. Second operand 2 states and 576 transitions. [2023-01-28 00:50:48,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 137 flow [2023-01-28 00:50:48,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 133 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 00:50:48,229 INFO L231 Difference]: Finished difference. Result has 30 places, 32 transitions, 77 flow [2023-01-28 00:50:48,229 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} [2023-01-28 00:50:48,230 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-01-28 00:50:48,230 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 32 transitions, 77 flow [2023-01-28 00:50:48,230 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) [2023-01-28 00:50:48,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:48,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 00:50:48,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 00:50:48,231 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)] === [2023-01-28 00:50:48,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:48,231 INFO L85 PathProgramCache]: Analyzing trace with hash -406447722, now seen corresponding path program 1 times [2023-01-28 00:50:48,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:48,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275296430] [2023-01-28 00:50:48,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:48,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:48,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:48,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275296430] [2023-01-28 00:50:48,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275296430] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:48,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:48,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:50:48,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781119697] [2023-01-28 00:50:48,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:48,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 00:50:48,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:48,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 00:50:48,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 00:50:48,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 549 [2023-01-28 00:50:48,312 INFO L100 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) [2023-01-28 00:50:48,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:48,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 549 [2023-01-28 00:50:48,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:48,438 INFO L130 PetriNetUnfolder]: 476/744 cut-off events. [2023-01-28 00:50:48,438 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 00:50:48,439 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. [2023-01-28 00:50:48,441 INFO L137 encePairwiseOnDemand]: 540/549 looper letters, 52 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2023-01-28 00:50:48,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 67 transitions, 283 flow [2023-01-28 00:50:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 00:50:48,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 00:50:48,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1332 transitions. [2023-01-28 00:50:48,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852459016393443 [2023-01-28 00:50:48,443 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1332 transitions. [2023-01-28 00:50:48,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1332 transitions. [2023-01-28 00:50:48,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:48,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1332 transitions. [2023-01-28 00:50:48,446 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) [2023-01-28 00:50:48,449 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) [2023-01-28 00:50:48,450 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) [2023-01-28 00:50:48,450 INFO L175 Difference]: Start difference. First operand has 30 places, 32 transitions, 77 flow. Second operand 5 states and 1332 transitions. [2023-01-28 00:50:48,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 67 transitions, 283 flow [2023-01-28 00:50:48,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 67 transitions, 283 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 00:50:48,452 INFO L231 Difference]: Finished difference. Result has 38 places, 41 transitions, 161 flow [2023-01-28 00:50:48,453 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} [2023-01-28 00:50:48,454 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-01-28 00:50:48,454 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 41 transitions, 161 flow [2023-01-28 00:50:48,455 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) [2023-01-28 00:50:48,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:48,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:48,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 00:50:48,456 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)] === [2023-01-28 00:50:48,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:48,456 INFO L85 PathProgramCache]: Analyzing trace with hash 240101681, now seen corresponding path program 1 times [2023-01-28 00:50:48,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:48,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232282154] [2023-01-28 00:50:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:48,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:48,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:48,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:48,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232282154] [2023-01-28 00:50:48,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232282154] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:48,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:48,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:50:48,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302139923] [2023-01-28 00:50:48,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:48,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:48,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:48,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:48,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:48,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 549 [2023-01-28 00:50:48,562 INFO L100 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) [2023-01-28 00:50:48,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:48,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 549 [2023-01-28 00:50:48,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:48,658 INFO L130 PetriNetUnfolder]: 536/820 cut-off events. [2023-01-28 00:50:48,658 INFO L131 PetriNetUnfolder]: For 301/301 co-relation queries the response was YES. [2023-01-28 00:50:48,659 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. [2023-01-28 00:50:48,662 INFO L137 encePairwiseOnDemand]: 541/549 looper letters, 48 selfloop transitions, 11 changer transitions 2/64 dead transitions. [2023-01-28 00:50:48,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 64 transitions, 370 flow [2023-01-28 00:50:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2023-01-28 00:50:48,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544626593806923 [2023-01-28 00:50:48,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2023-01-28 00:50:48,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2023-01-28 00:50:48,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:48,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2023-01-28 00:50:48,665 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) [2023-01-28 00:50:48,667 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) [2023-01-28 00:50:48,668 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) [2023-01-28 00:50:48,668 INFO L175 Difference]: Start difference. First operand has 38 places, 41 transitions, 161 flow. Second operand 3 states and 816 transitions. [2023-01-28 00:50:48,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 64 transitions, 370 flow [2023-01-28 00:50:48,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 64 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 00:50:48,671 INFO L231 Difference]: Finished difference. Result has 42 places, 48 transitions, 267 flow [2023-01-28 00:50:48,671 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} [2023-01-28 00:50:48,671 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-01-28 00:50:48,671 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 48 transitions, 267 flow [2023-01-28 00:50:48,672 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) [2023-01-28 00:50:48,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:48,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:48,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 00:50:48,672 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)] === [2023-01-28 00:50:48,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:48,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1189891172, now seen corresponding path program 1 times [2023-01-28 00:50:48,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:48,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522884401] [2023-01-28 00:50:48,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:48,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:48,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:48,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522884401] [2023-01-28 00:50:48,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522884401] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:48,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:48,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:50:48,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147718482] [2023-01-28 00:50:48,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:48,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:48,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:48,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:48,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:48,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 549 [2023-01-28 00:50:48,739 INFO L100 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) [2023-01-28 00:50:48,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:48,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 549 [2023-01-28 00:50:48,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:48,820 INFO L130 PetriNetUnfolder]: 588/888 cut-off events. [2023-01-28 00:50:48,821 INFO L131 PetriNetUnfolder]: For 1217/1217 co-relation queries the response was YES. [2023-01-28 00:50:48,822 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. [2023-01-28 00:50:48,825 INFO L137 encePairwiseOnDemand]: 546/549 looper letters, 50 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-01-28 00:50:48,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 55 transitions, 405 flow [2023-01-28 00:50:48,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:48,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 839 transitions. [2023-01-28 00:50:48,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509411050394657 [2023-01-28 00:50:48,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 839 transitions. [2023-01-28 00:50:48,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 839 transitions. [2023-01-28 00:50:48,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:48,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 839 transitions. [2023-01-28 00:50:48,828 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) [2023-01-28 00:50:48,830 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) [2023-01-28 00:50:48,831 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) [2023-01-28 00:50:48,831 INFO L175 Difference]: Start difference. First operand has 42 places, 48 transitions, 267 flow. Second operand 3 states and 839 transitions. [2023-01-28 00:50:48,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 55 transitions, 405 flow [2023-01-28 00:50:48,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 55 transitions, 378 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 00:50:48,835 INFO L231 Difference]: Finished difference. Result has 41 places, 49 transitions, 260 flow [2023-01-28 00:50:48,835 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} [2023-01-28 00:50:48,835 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-01-28 00:50:48,835 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 49 transitions, 260 flow [2023-01-28 00:50:48,836 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) [2023-01-28 00:50:48,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:48,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:48,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 00:50:48,836 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)] === [2023-01-28 00:50:48,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:48,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1149732285, now seen corresponding path program 1 times [2023-01-28 00:50:48,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:48,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949730038] [2023-01-28 00:50:48,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:48,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:48,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:48,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949730038] [2023-01-28 00:50:48,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949730038] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:48,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:48,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 00:50:48,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869748023] [2023-01-28 00:50:48,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:48,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:48,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:48,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:48,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:48,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 549 [2023-01-28 00:50:48,892 INFO L100 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) [2023-01-28 00:50:48,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:48,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 549 [2023-01-28 00:50:48,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:48,972 INFO L130 PetriNetUnfolder]: 578/872 cut-off events. [2023-01-28 00:50:48,972 INFO L131 PetriNetUnfolder]: For 898/898 co-relation queries the response was YES. [2023-01-28 00:50:48,973 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. [2023-01-28 00:50:48,976 INFO L137 encePairwiseOnDemand]: 545/549 looper letters, 45 selfloop transitions, 3 changer transitions 1/52 dead transitions. [2023-01-28 00:50:48,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 366 flow [2023-01-28 00:50:48,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:48,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2023-01-28 00:50:48,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851244687310261 [2023-01-28 00:50:48,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 799 transitions. [2023-01-28 00:50:48,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 799 transitions. [2023-01-28 00:50:48,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:48,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 799 transitions. [2023-01-28 00:50:48,979 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) [2023-01-28 00:50:48,981 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) [2023-01-28 00:50:48,982 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) [2023-01-28 00:50:48,982 INFO L175 Difference]: Start difference. First operand has 41 places, 49 transitions, 260 flow. Second operand 3 states and 799 transitions. [2023-01-28 00:50:48,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 366 flow [2023-01-28 00:50:48,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 00:50:48,984 INFO L231 Difference]: Finished difference. Result has 43 places, 49 transitions, 271 flow [2023-01-28 00:50:48,984 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} [2023-01-28 00:50:48,985 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-01-28 00:50:48,985 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 49 transitions, 271 flow [2023-01-28 00:50:48,985 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) [2023-01-28 00:50:48,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:50:48,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:50:48,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 00:50:48,986 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)] === [2023-01-28 00:50:48,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:50:48,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1751145265, now seen corresponding path program 1 times [2023-01-28 00:50:48,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:50:48,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904025200] [2023-01-28 00:50:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:50:48,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:50:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:50:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:50:49,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:50:49,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904025200] [2023-01-28 00:50:49,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904025200] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 00:50:49,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 00:50:49,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 00:50:49,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428604145] [2023-01-28 00:50:49,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 00:50:49,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 00:50:49,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:50:49,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 00:50:49,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 00:50:49,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 549 [2023-01-28 00:50:49,024 INFO L100 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) [2023-01-28 00:50:49,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:50:49,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 549 [2023-01-28 00:50:49,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:50:49,080 INFO L130 PetriNetUnfolder]: 248/395 cut-off events. [2023-01-28 00:50:49,081 INFO L131 PetriNetUnfolder]: For 568/568 co-relation queries the response was YES. [2023-01-28 00:50:49,081 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. [2023-01-28 00:50:49,082 INFO L137 encePairwiseOnDemand]: 543/549 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-01-28 00:50:49,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 291 flow [2023-01-28 00:50:49,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 00:50:49,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 00:50:49,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 797 transitions. [2023-01-28 00:50:49,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4839101396478446 [2023-01-28 00:50:49,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 797 transitions. [2023-01-28 00:50:49,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 797 transitions. [2023-01-28 00:50:49,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:50:49,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 797 transitions. [2023-01-28 00:50:49,085 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) [2023-01-28 00:50:49,087 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) [2023-01-28 00:50:49,087 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) [2023-01-28 00:50:49,087 INFO L175 Difference]: Start difference. First operand has 43 places, 49 transitions, 271 flow. Second operand 3 states and 797 transitions. [2023-01-28 00:50:49,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 291 flow [2023-01-28 00:50:49,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 239 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-01-28 00:50:49,089 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-01-28 00:50:49,089 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} [2023-01-28 00:50:49,089 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-01-28 00:50:49,089 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-01-28 00:50:49,090 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) [2023-01-28 00:50:49,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2023-01-28 00:50:49,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-01-28 00:50:49,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-01-28 00:50:49,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-01-28 00:50:49,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 9 remaining) [2023-01-28 00:50:49,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2023-01-28 00:50:49,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2023-01-28 00:50:49,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_usbErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-01-28 00:50:49,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread_ath9kErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-01-28 00:50:49,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 00:50:49,091 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-01-28 00:50:49,091 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (2/2) [2023-01-28 00:50:49,093 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:50:49,093 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:50:49,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:50:49 BasicIcfg [2023-01-28 00:50:49,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:50:49,096 INFO L158 Benchmark]: Toolchain (without parser) took 10915.10ms. Allocated memory was 551.6MB in the beginning and 687.9MB in the end (delta: 136.3MB). Free memory was 499.5MB in the beginning and 422.8MB in the end (delta: 76.7MB). Peak memory consumption was 215.7MB. Max. memory is 16.0GB. [2023-01-28 00:50:49,096 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 404.8MB. Free memory is still 354.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:50:49,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 578.19ms. Allocated memory is still 551.6MB. Free memory was 499.5MB in the beginning and 494.2MB in the end (delta: 5.3MB). Peak memory consumption was 48.1MB. Max. memory is 16.0GB. [2023-01-28 00:50:49,096 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.63ms. Allocated memory is still 551.6MB. Free memory was 494.2MB in the beginning and 490.8MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 00:50:49,097 INFO L158 Benchmark]: Boogie Preprocessor took 36.04ms. Allocated memory is still 551.6MB. Free memory was 490.8MB in the beginning and 487.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 00:50:49,097 INFO L158 Benchmark]: RCFGBuilder took 475.65ms. Allocated memory is still 551.6MB. Free memory was 487.1MB in the beginning and 461.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-01-28 00:50:49,097 INFO L158 Benchmark]: TraceAbstraction took 9777.06ms. Allocated memory was 551.6MB in the beginning and 687.9MB in the end (delta: 136.3MB). Free memory was 461.4MB in the beginning and 422.8MB in the end (delta: 38.7MB). Peak memory consumption was 176.0MB. Max. memory is 16.0GB. [2023-01-28 00:50:49,098 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 404.8MB. Free memory is still 354.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 578.19ms. Allocated memory is still 551.6MB. Free memory was 499.5MB in the beginning and 494.2MB in the end (delta: 5.3MB). Peak memory consumption was 48.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.63ms. Allocated memory is still 551.6MB. Free memory was 494.2MB in the beginning and 490.8MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.04ms. Allocated memory is still 551.6MB. Free memory was 490.8MB in the beginning and 487.9MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 475.65ms. Allocated memory is still 551.6MB. Free memory was 487.1MB in the beginning and 461.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 9777.06ms. Allocated memory was 551.6MB in the beginning and 687.9MB in the end (delta: 136.3MB). Free memory was 461.4MB in the beginning and 422.8MB in the end (delta: 38.7MB). Peak memory consumption was 176.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 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: 3.9s, 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: 4.8s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - 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: 4.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 0.2s 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, 0.3s 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! [2023-01-28 00:50:49,113 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...