./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 82e959473290e80a4f353bcd3c2747bafa4ce239975e14e29f8e5bf5eff4b01b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 13:52:41,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 13:52:41,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 13:52:41,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 13:52:41,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 13:52:41,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 13:52:41,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 13:52:41,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 13:52:41,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 13:52:41,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 13:52:41,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 13:52:41,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 13:52:41,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 13:52:41,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 13:52:41,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 13:52:41,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 13:52:41,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 13:52:41,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 13:52:41,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 13:52:41,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 13:52:41,988 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 13:52:41,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 13:52:41,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 13:52:41,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 13:52:41,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 13:52:41,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 13:52:41,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 13:52:41,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 13:52:41,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 13:52:41,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 13:52:42,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 13:52:42,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 13:52:42,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 13:52:42,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 13:52:42,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 13:52:42,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 13:52:42,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 13:52:42,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 13:52:42,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 13:52:42,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 13:52:42,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 13:52:42,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 13:52:42,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 13:52:42,035 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 13:52:42,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 13:52:42,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 13:52:42,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 13:52:42,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 13:52:42,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 13:52:42,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 13:52:42,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 13:52:42,038 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 13:52:42,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 13:52:42,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 13:52:42,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 13:52:42,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 13:52:42,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 13:52:42,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 13:52:42,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 13:52:42,039 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 13:52:42,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 13:52:42,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 13:52:42,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 13:52:42,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 13:52:42,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 13:52:42,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 13:52:42,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 13:52:42,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 13:52:42,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 13:52:42,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 13:52:42,041 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 13:52:42,041 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 13:52:42,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 13:52:42,042 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82e959473290e80a4f353bcd3c2747bafa4ce239975e14e29f8e5bf5eff4b01b [2022-07-21 13:52:42,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 13:52:42,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 13:52:42,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 13:52:42,362 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 13:52:42,362 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 13:52:42,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2022-07-21 13:52:42,423 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c83ca50d6/b36eb8c5f067476685c62c4091e2a582/FLAG5b5cccd2d [2022-07-21 13:52:43,115 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 13:52:43,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2022-07-21 13:52:43,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c83ca50d6/b36eb8c5f067476685c62c4091e2a582/FLAG5b5cccd2d [2022-07-21 13:52:43,446 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c83ca50d6/b36eb8c5f067476685c62c4091e2a582 [2022-07-21 13:52:43,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 13:52:43,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 13:52:43,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 13:52:43,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 13:52:43,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 13:52:43,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:52:43" (1/1) ... [2022-07-21 13:52:43,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eebbc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:52:43, skipping insertion in model container [2022-07-21 13:52:43,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:52:43" (1/1) ... [2022-07-21 13:52:43,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 13:52:43,594 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 13:52:45,519 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343367,343380] [2022-07-21 13:52:45,522 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343536,343549] [2022-07-21 13:52:45,522 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343703,343716] [2022-07-21 13:52:45,523 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343871,343884] [2022-07-21 13:52:45,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:52:45,594 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 13:52:45,776 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckException: Type check failed for C: cfgpmcsr = cfgpmcsr & 4294967039U [8534] at de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) at de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckHelper.typeCheckBinaryExpression(TypeCheckHelper.java:207) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.constructBinaryExpression(ExpressionFactory.java:597) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.newBinaryExpression(ExpressionFactory.java:132) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:483) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 13:52:45,782 INFO L158 Benchmark]: Toolchain (without parser) took 2330.02ms. Allocated memory was 62.9MB in the beginning and 155.2MB in the end (delta: 92.3MB). Free memory was 27.8MB in the beginning and 83.5MB in the end (delta: -55.8MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2022-07-21 13:52:45,782 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 43.9MB in the beginning and 43.9MB in the end (delta: 33.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 13:52:45,783 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2328.41ms. Allocated memory was 62.9MB in the beginning and 155.2MB in the end (delta: 92.3MB). Free memory was 27.5MB in the beginning and 83.5MB in the end (delta: -56.0MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. [2022-07-21 13:52:45,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 43.9MB in the beginning and 43.9MB in the end (delta: 33.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2328.41ms. Allocated memory was 62.9MB in the beginning and 155.2MB in the end (delta: 92.3MB). Free memory was 27.5MB in the beginning and 83.5MB in the end (delta: -56.0MB). Peak memory consumption was 58.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: cfgpmcsr = cfgpmcsr & 4294967039U [8534] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: cfgpmcsr = cfgpmcsr & 4294967039U [8534]: de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 82e959473290e80a4f353bcd3c2747bafa4ce239975e14e29f8e5bf5eff4b01b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 13:52:47,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 13:52:47,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 13:52:47,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 13:52:47,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 13:52:47,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 13:52:47,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 13:52:47,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 13:52:47,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 13:52:47,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 13:52:47,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 13:52:47,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 13:52:47,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 13:52:47,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 13:52:47,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 13:52:47,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 13:52:47,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 13:52:47,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 13:52:47,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 13:52:47,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 13:52:47,388 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 13:52:47,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 13:52:47,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 13:52:47,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 13:52:47,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 13:52:47,393 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 13:52:47,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 13:52:47,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 13:52:47,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 13:52:47,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 13:52:47,398 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 13:52:47,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 13:52:47,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 13:52:47,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 13:52:47,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 13:52:47,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 13:52:47,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 13:52:47,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 13:52:47,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 13:52:47,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 13:52:47,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 13:52:47,406 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 13:52:47,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 13:52:47,437 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 13:52:47,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 13:52:47,439 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 13:52:47,439 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 13:52:47,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 13:52:47,440 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 13:52:47,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 13:52:47,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 13:52:47,441 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 13:52:47,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 13:52:47,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 13:52:47,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 13:52:47,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 13:52:47,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 13:52:47,442 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 13:52:47,442 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 13:52:47,442 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 13:52:47,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 13:52:47,442 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 13:52:47,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 13:52:47,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 13:52:47,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 13:52:47,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 13:52:47,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 13:52:47,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 13:52:47,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 13:52:47,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 13:52:47,444 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 13:52:47,444 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 13:52:47,444 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 13:52:47,445 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 13:52:47,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 13:52:47,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 13:52:47,445 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82e959473290e80a4f353bcd3c2747bafa4ce239975e14e29f8e5bf5eff4b01b [2022-07-21 13:52:47,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 13:52:47,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 13:52:47,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 13:52:47,762 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 13:52:47,762 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 13:52:47,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2022-07-21 13:52:47,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60c1a5105/2926ce7d05974060be54d42e570c90b9/FLAG20dc0f536 [2022-07-21 13:52:48,570 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 13:52:48,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2022-07-21 13:52:48,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60c1a5105/2926ce7d05974060be54d42e570c90b9/FLAG20dc0f536 [2022-07-21 13:52:48,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60c1a5105/2926ce7d05974060be54d42e570c90b9 [2022-07-21 13:52:48,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 13:52:48,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 13:52:48,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 13:52:48,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 13:52:48,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 13:52:48,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:52:48" (1/1) ... [2022-07-21 13:52:48,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b56c99a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:52:48, skipping insertion in model container [2022-07-21 13:52:48,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:52:48" (1/1) ... [2022-07-21 13:52:48,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 13:52:48,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 13:52:50,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343367,343380] [2022-07-21 13:52:50,880 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343536,343549] [2022-07-21 13:52:50,881 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343703,343716] [2022-07-21 13:52:50,882 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343871,343884] [2022-07-21 13:52:50,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:52:50,956 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 13:52:50,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 13:52:51,290 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343367,343380] [2022-07-21 13:52:51,291 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343536,343549] [2022-07-21 13:52:51,291 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343703,343716] [2022-07-21 13:52:51,291 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343871,343884] [2022-07-21 13:52:51,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:52:51,337 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 13:52:51,543 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343367,343380] [2022-07-21 13:52:51,544 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343536,343549] [2022-07-21 13:52:51,544 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343703,343716] [2022-07-21 13:52:51,544 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i[343871,343884] [2022-07-21 13:52:51,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:52:51,699 INFO L208 MainTranslator]: Completed translation [2022-07-21 13:52:51,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:52:51 WrapperNode [2022-07-21 13:52:51,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 13:52:51,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 13:52:51,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 13:52:51,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 13:52:51,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:52:51" (1/1) ... [2022-07-21 13:52:51,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:52:51" (1/1) ... [2022-07-21 13:52:51,976 INFO L137 Inliner]: procedures = 463, calls = 1948, calls flagged for inlining = 238, calls inlined = 222, statements flattened = 5029 [2022-07-21 13:52:51,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 13:52:51,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 13:52:51,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 13:52:51,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 13:52:51,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:52:51" (1/1) ... [2022-07-21 13:52:51,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:52:51" (1/1) ... [2022-07-21 13:52:52,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:52:51" (1/1) ... [2022-07-21 13:52:52,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:52:51" (1/1) ... [2022-07-21 13:52:52,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:52:51" (1/1) ... [2022-07-21 13:52:52,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:52:51" (1/1) ... [2022-07-21 13:52:52,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:52:51" (1/1) ... [2022-07-21 13:52:52,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 13:52:52,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 13:52:52,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 13:52:52,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 13:52:52,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:52:51" (1/1) ... [2022-07-21 13:52:52,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 13:52:52,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 13:52:52,248 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) [2022-07-21 13:52:52,264 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 [2022-07-21 13:52:52,284 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_rxfilter [2022-07-21 13:52:52,285 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_rxfilter [2022-07-21 13:52:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2022-07-21 13:52:52,285 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2022-07-21 13:52:52,285 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-07-21 13:52:52,286 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-07-21 13:52:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 13:52:52,286 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 13:52:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2022-07-21 13:52:52,286 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2022-07-21 13:52:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-21 13:52:52,286 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-21 13:52:52,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 13:52:52,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 13:52:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-21 13:52:52,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-21 13:52:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_ok [2022-07-21 13:52:52,287 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_ok [2022-07-21 13:52:52,287 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-07-21 13:52:52,287 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-07-21 13:52:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_on [2022-07-21 13:52:52,288 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_on [2022-07-21 13:52:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_default_phy [2022-07-21 13:52:52,288 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_default_phy [2022-07-21 13:52:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2022-07-21 13:52:52,288 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2022-07-21 13:52:52,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_75 [2022-07-21 13:52:52,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_75 [2022-07-21 13:52:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_66 [2022-07-21 13:52:52,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_66 [2022-07-21 13:52:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2022-07-21 13:52:52,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2022-07-21 13:52:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-07-21 13:52:52,289 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-07-21 13:52:52,289 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_check_mode [2022-07-21 13:52:52,289 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_check_mode [2022-07-21 13:52:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-07-21 13:52:52,290 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-07-21 13:52:52,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-21 13:52:52,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-07-21 13:52:52,291 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-07-21 13:52:52,291 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-07-21 13:52:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2022-07-21 13:52:52,292 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2022-07-21 13:52:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-21 13:52:52,292 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-21 13:52:52,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-21 13:52:52,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-21 13:52:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_remove [2022-07-21 13:52:52,293 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_remove [2022-07-21 13:52:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure sis630_set_eq [2022-07-21 13:52:52,293 INFO L138 BoogieDeclarations]: Found implementation of procedure sis630_set_eq [2022-07-21 13:52:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_device [2022-07-21 13:52:52,293 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_device [2022-07-21 13:52:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-07-21 13:52:52,293 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-07-21 13:52:52,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 13:52:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-21 13:52:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 13:52:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 13:52:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-21 13:52:52,294 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_sis900_cleanup_module_14_2 [2022-07-21 13:52:52,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_sis900_cleanup_module_14_2 [2022-07-21 13:52:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_tx_ring [2022-07-21 13:52:52,295 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_tx_ring [2022-07-21 13:52:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-21 13:52:52,295 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-21 13:52:52,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_sis900_private [2022-07-21 13:52:52,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_sis900_private [2022-07-21 13:52:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-21 13:52:52,296 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-21 13:52:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-07-21 13:52:52,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-07-21 13:52:52,296 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_set_mode [2022-07-21 13:52:52,297 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_set_mode [2022-07-21 13:52:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2022-07-21 13:52:52,297 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2022-07-21 13:52:52,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_sis900_private [2022-07-21 13:52:52,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_sis900_private [2022-07-21 13:52:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-07-21 13:52:52,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-07-21 13:52:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2022-07-21 13:52:52,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2022-07-21 13:52:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-07-21 13:52:52,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-07-21 13:52:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-07-21 13:52:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-07-21 13:52:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-07-21 13:52:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-07-21 13:52:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_interrupt [2022-07-21 13:52:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_interrupt [2022-07-21 13:52:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_reset_phy [2022-07-21 13:52:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_reset_phy [2022-07-21 13:52:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-21 13:52:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-21 13:52:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 13:52:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-07-21 13:52:52,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-07-21 13:52:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-07-21 13:52:52,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-07-21 13:52:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 13:52:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-21 13:52:52,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-21 13:52:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 13:52:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2022-07-21 13:52:52,303 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2022-07-21 13:52:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_open [2022-07-21 13:52:52,304 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_open [2022-07-21 13:52:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 13:52:52,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 13:52:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_nway_reset [2022-07-21 13:52:52,305 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_nway_reset [2022-07-21 13:52:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-07-21 13:52:52,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-07-21 13:52:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-21 13:52:52,311 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-21 13:52:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-07-21 13:52:52,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-07-21 13:52:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2022-07-21 13:52:52,311 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2022-07-21 13:52:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 13:52:52,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 13:52:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 13:52:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_close [2022-07-21 13:52:52,312 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_close [2022-07-21 13:52:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 13:52:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 13:52:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 13:52:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 13:52:52,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 13:52:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-21 13:52:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-21 13:52:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure netif_carrier_off [2022-07-21 13:52:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_carrier_off [2022-07-21 13:52:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2022-07-21 13:52:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2022-07-21 13:52:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_reset [2022-07-21 13:52:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_reset [2022-07-21 13:52:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2022-07-21 13:52:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2022-07-21 13:52:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-21 13:52:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-21 13:52:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure pci_alloc_consistent [2022-07-21 13:52:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_alloc_consistent [2022-07-21 13:52:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-07-21 13:52:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-07-21 13:52:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2022-07-21 13:52:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2022-07-21 13:52:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-07-21 13:52:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-07-21 13:52:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 13:52:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-21 13:52:52,315 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-21 13:52:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_74 [2022-07-21 13:52:52,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_74 [2022-07-21 13:52:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 13:52:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-07-21 13:52:52,315 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-07-21 13:52:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_init_rx_ring [2022-07-21 13:52:52,315 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_init_rx_ring [2022-07-21 13:52:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 13:52:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 13:52:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 13:52:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 13:52:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 13:52:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-07-21 13:52:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-07-21 13:52:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-21 13:52:52,317 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-21 13:52:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-07-21 13:52:52,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-07-21 13:52:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure eth_hw_addr_random [2022-07-21 13:52:52,317 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_hw_addr_random [2022-07-21 13:52:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-07-21 13:52:52,317 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-07-21 13:52:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2022-07-21 13:52:52,317 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2022-07-21 13:52:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_poll [2022-07-21 13:52:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_poll [2022-07-21 13:52:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-21 13:52:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-21 13:52:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-21 13:52:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-21 13:52:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_mapping_error [2022-07-21 13:52:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_mapping_error [2022-07-21 13:52:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 13:52:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 13:52:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 13:52:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 13:52:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_resume [2022-07-21 13:52:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_resume [2022-07-21 13:52:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 13:52:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 13:52:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dev_put [2022-07-21 13:52:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dev_put [2022-07-21 13:52:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_idle [2022-07-21 13:52:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_idle [2022-07-21 13:52:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure sis900_tx_timeout [2022-07-21 13:52:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure sis900_tx_timeout [2022-07-21 13:52:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-07-21 13:52:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-07-21 13:52:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2022-07-21 13:52:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2022-07-21 13:52:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-07-21 13:52:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-07-21 13:52:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-07-21 13:52:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-07-21 13:52:53,043 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 13:52:53,047 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 13:52:53,380 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 13:53:21,655 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-07-21 13:53:21,698 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 13:53:21,736 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 13:53:21,736 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 13:53:21,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:53:21 BoogieIcfgContainer [2022-07-21 13:53:21,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 13:53:21,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 13:53:21,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 13:53:21,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 13:53:21,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:52:48" (1/3) ... [2022-07-21 13:53:21,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c1a8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:53:21, skipping insertion in model container [2022-07-21 13:53:21,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:52:51" (2/3) ... [2022-07-21 13:53:21,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c1a8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:53:21, skipping insertion in model container [2022-07-21 13:53:21,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:53:21" (3/3) ... [2022-07-21 13:53:21,747 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-sis-sis900.cil.i [2022-07-21 13:53:21,757 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 13:53:21,758 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-21 13:53:21,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 13:53:21,834 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=true, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@56588f8c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3ca3f7b2 [2022-07-21 13:53:21,834 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 13:53:21,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 1960 states, 1339 states have (on average 1.2763256161314414) internal successors, (1709), 1366 states have internal predecessors, (1709), 526 states have call successors, (526), 93 states have call predecessors, (526), 92 states have return successors, (520), 512 states have call predecessors, (520), 520 states have call successors, (520) [2022-07-21 13:53:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 13:53:21,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:53:21,870 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:53:21,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:53:21,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:53:21,874 INFO L85 PathProgramCache]: Analyzing trace with hash -511834341, now seen corresponding path program 1 times [2022-07-21 13:53:21,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:53:21,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241996150] [2022-07-21 13:53:21,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:53:21,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:53:21,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:53:21,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:53:21,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 13:53:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:53:22,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:53:22,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:53:23,025 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-07-21 13:53:23,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:53:23,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:53:23,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241996150] [2022-07-21 13:53:23,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241996150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:53:23,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:53:23,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:53:23,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392642683] [2022-07-21 13:53:23,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:53:23,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:53:23,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:53:23,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:53:23,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:53:23,063 INFO L87 Difference]: Start difference. First operand has 1960 states, 1339 states have (on average 1.2763256161314414) internal successors, (1709), 1366 states have internal predecessors, (1709), 526 states have call successors, (526), 93 states have call predecessors, (526), 92 states have return successors, (520), 512 states have call predecessors, (520), 520 states have call successors, (520) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 13:53:23,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:53:23,482 INFO L93 Difference]: Finished difference Result 5732 states and 8177 transitions. [2022-07-21 13:53:23,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:53:23,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 149 [2022-07-21 13:53:23,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:53:23,524 INFO L225 Difference]: With dead ends: 5732 [2022-07-21 13:53:23,524 INFO L226 Difference]: Without dead ends: 3789 [2022-07-21 13:53:23,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:53:23,541 INFO L413 NwaCegarLoop]: 3232 mSDtfsCounter, 2605 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2605 SdHoareTripleChecker+Valid, 5921 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:53:23,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2605 Valid, 5921 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:53:23,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3789 states. [2022-07-21 13:53:23,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3789 to 3785. [2022-07-21 13:53:23,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3785 states, 2605 states have (on average 1.2706333973128598) internal successors, (3310), 2658 states have internal predecessors, (3310), 997 states have call successors, (997), 181 states have call predecessors, (997), 180 states have return successors, (993), 977 states have call predecessors, (993), 993 states have call successors, (993) [2022-07-21 13:53:23,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3785 states to 3785 states and 5300 transitions. [2022-07-21 13:53:23,874 INFO L78 Accepts]: Start accepts. Automaton has 3785 states and 5300 transitions. Word has length 149 [2022-07-21 13:53:23,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:53:23,877 INFO L495 AbstractCegarLoop]: Abstraction has 3785 states and 5300 transitions. [2022-07-21 13:53:23,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 13:53:23,877 INFO L276 IsEmpty]: Start isEmpty. Operand 3785 states and 5300 transitions. [2022-07-21 13:53:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-21 13:53:23,883 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:53:23,883 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:53:23,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 13:53:24,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:53:24,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:53:24,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:53:24,106 INFO L85 PathProgramCache]: Analyzing trace with hash 474246430, now seen corresponding path program 1 times [2022-07-21 13:53:24,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:53:24,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865872335] [2022-07-21 13:53:24,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:53:24,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:53:24,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:53:24,109 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:53:24,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 13:53:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:53:25,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:53:25,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:53:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-07-21 13:53:25,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:53:25,212 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:53:25,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865872335] [2022-07-21 13:53:25,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865872335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:53:25,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:53:25,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:53:25,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896566035] [2022-07-21 13:53:25,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:53:25,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:53:25,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:53:25,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:53:25,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:53:25,214 INFO L87 Difference]: Start difference. First operand 3785 states and 5300 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 13:53:25,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:53:25,646 INFO L93 Difference]: Finished difference Result 11169 states and 15652 transitions. [2022-07-21 13:53:25,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:53:25,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 153 [2022-07-21 13:53:25,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:53:25,693 INFO L225 Difference]: With dead ends: 11169 [2022-07-21 13:53:25,693 INFO L226 Difference]: Without dead ends: 7411 [2022-07-21 13:53:25,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:53:25,715 INFO L413 NwaCegarLoop]: 3243 mSDtfsCounter, 2650 mSDsluCounter, 2644 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2650 SdHoareTripleChecker+Valid, 5887 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:53:25,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2650 Valid, 5887 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:53:25,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7411 states. [2022-07-21 13:53:25,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7411 to 7382. [2022-07-21 13:53:25,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7382 states, 5092 states have (on average 1.2723880597014925) internal successors, (6479), 5200 states have internal predecessors, (6479), 1932 states have call successors, (1932), 360 states have call predecessors, (1932), 355 states have return successors, (1934), 1883 states have call predecessors, (1934), 1928 states have call successors, (1934) [2022-07-21 13:53:26,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7382 states to 7382 states and 10345 transitions. [2022-07-21 13:53:26,012 INFO L78 Accepts]: Start accepts. Automaton has 7382 states and 10345 transitions. Word has length 153 [2022-07-21 13:53:26,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:53:26,014 INFO L495 AbstractCegarLoop]: Abstraction has 7382 states and 10345 transitions. [2022-07-21 13:53:26,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 13:53:26,014 INFO L276 IsEmpty]: Start isEmpty. Operand 7382 states and 10345 transitions. [2022-07-21 13:53:26,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 13:53:26,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:53:26,017 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:53:26,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-21 13:53:26,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:53:26,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:53:26,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:53:26,232 INFO L85 PathProgramCache]: Analyzing trace with hash 501804944, now seen corresponding path program 1 times [2022-07-21 13:53:26,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:53:26,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385837100] [2022-07-21 13:53:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:53:26,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:53:26,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:53:26,235 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:53:26,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 13:53:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:53:27,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:53:27,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:53:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-07-21 13:53:27,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:53:27,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:53:27,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385837100] [2022-07-21 13:53:27,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385837100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:53:27,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:53:27,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:53:27,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647729164] [2022-07-21 13:53:27,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:53:27,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:53:27,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:53:27,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:53:27,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:53:27,337 INFO L87 Difference]: Start difference. First operand 7382 states and 10345 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 13:53:28,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:53:28,015 INFO L93 Difference]: Finished difference Result 20898 states and 29297 transitions. [2022-07-21 13:53:28,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:53:28,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 156 [2022-07-21 13:53:28,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:53:28,108 INFO L225 Difference]: With dead ends: 20898 [2022-07-21 13:53:28,108 INFO L226 Difference]: Without dead ends: 13543 [2022-07-21 13:53:28,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:53:28,154 INFO L413 NwaCegarLoop]: 3177 mSDtfsCounter, 2268 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 5804 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:53:28,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2268 Valid, 5804 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:53:28,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13543 states. [2022-07-21 13:53:28,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13543 to 13512. [2022-07-21 13:53:28,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13512 states, 9242 states have (on average 1.2716944384332396) internal successors, (11753), 9448 states have internal predecessors, (11753), 3584 states have call successors, (3584), 694 states have call predecessors, (3584), 683 states have return successors, (3594), 3487 states have call predecessors, (3594), 3580 states have call successors, (3594) [2022-07-21 13:53:28,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13512 states to 13512 states and 18931 transitions. [2022-07-21 13:53:28,733 INFO L78 Accepts]: Start accepts. Automaton has 13512 states and 18931 transitions. Word has length 156 [2022-07-21 13:53:28,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:53:28,733 INFO L495 AbstractCegarLoop]: Abstraction has 13512 states and 18931 transitions. [2022-07-21 13:53:28,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 13:53:28,734 INFO L276 IsEmpty]: Start isEmpty. Operand 13512 states and 18931 transitions. [2022-07-21 13:53:28,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-21 13:53:28,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:53:28,736 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:53:28,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 13:53:28,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:53:28,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:53:28,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:53:28,952 INFO L85 PathProgramCache]: Analyzing trace with hash -585811610, now seen corresponding path program 1 times [2022-07-21 13:53:28,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:53:28,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386536754] [2022-07-21 13:53:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:53:28,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:53:28,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:53:28,955 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:53:28,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 13:53:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:53:30,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:53:30,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:53:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2022-07-21 13:53:30,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:53:30,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:53:30,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386536754] [2022-07-21 13:53:30,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386536754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:53:30,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:53:30,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:53:30,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844583542] [2022-07-21 13:53:30,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:53:30,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:53:30,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:53:30,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:53:30,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:53:30,197 INFO L87 Difference]: Start difference. First operand 13512 states and 18931 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 13:53:30,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:53:30,769 INFO L93 Difference]: Finished difference Result 24124 states and 33746 transitions. [2022-07-21 13:53:30,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:53:30,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 165 [2022-07-21 13:53:30,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:53:30,866 INFO L225 Difference]: With dead ends: 24124 [2022-07-21 13:53:30,875 INFO L226 Difference]: Without dead ends: 10639 [2022-07-21 13:53:30,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:53:30,940 INFO L413 NwaCegarLoop]: 3786 mSDtfsCounter, 1536 mSDsluCounter, 2660 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 6446 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:53:30,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 6446 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:53:30,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10639 states. [2022-07-21 13:53:31,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10639 to 10608. [2022-07-21 13:53:31,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 7330 states have (on average 1.2724420190995906) internal successors, (9327), 7483 states have internal predecessors, (9327), 2702 states have call successors, (2702), 583 states have call predecessors, (2702), 573 states have return successors, (2705), 2623 states have call predecessors, (2705), 2698 states have call successors, (2705) [2022-07-21 13:53:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14734 transitions. [2022-07-21 13:53:31,384 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 14734 transitions. Word has length 165 [2022-07-21 13:53:31,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:53:31,385 INFO L495 AbstractCegarLoop]: Abstraction has 10608 states and 14734 transitions. [2022-07-21 13:53:31,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 13:53:31,386 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 14734 transitions. [2022-07-21 13:53:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-21 13:53:31,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:53:31,389 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:53:31,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 13:53:31,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:53:31,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:53:31,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:53:31,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1098294467, now seen corresponding path program 1 times [2022-07-21 13:53:31,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:53:31,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208202027] [2022-07-21 13:53:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:53:31,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:53:31,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:53:31,604 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:53:31,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 13:53:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:53:32,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:53:32,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:53:33,323 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2022-07-21 13:53:33,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:53:33,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:53:33,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208202027] [2022-07-21 13:53:33,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208202027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:53:33,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:53:33,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 13:53:33,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397003442] [2022-07-21 13:53:33,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:53:33,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:53:33,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:53:33,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:53:33,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:53:33,325 INFO L87 Difference]: Start difference. First operand 10608 states and 14734 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-21 13:53:33,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:53:33,522 INFO L93 Difference]: Finished difference Result 10614 states and 14739 transitions. [2022-07-21 13:53:33,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:53:33,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 205 [2022-07-21 13:53:33,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:53:33,557 INFO L225 Difference]: With dead ends: 10614 [2022-07-21 13:53:33,557 INFO L226 Difference]: Without dead ends: 10612 [2022-07-21 13:53:33,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:53:33,563 INFO L413 NwaCegarLoop]: 2722 mSDtfsCounter, 2638 mSDsluCounter, 5432 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2639 SdHoareTripleChecker+Valid, 8154 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:53:33,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2639 Valid, 8154 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:53:33,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10612 states. [2022-07-21 13:53:33,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10612 to 10612. [2022-07-21 13:53:33,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10612 states, 7333 states have (on average 1.272330560480022) internal successors, (9330), 7486 states have internal predecessors, (9330), 2702 states have call successors, (2702), 584 states have call predecessors, (2702), 574 states have return successors, (2705), 2623 states have call predecessors, (2705), 2698 states have call successors, (2705) [2022-07-21 13:53:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10612 states to 10612 states and 14737 transitions. [2022-07-21 13:53:33,905 INFO L78 Accepts]: Start accepts. Automaton has 10612 states and 14737 transitions. Word has length 205 [2022-07-21 13:53:33,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:53:33,905 INFO L495 AbstractCegarLoop]: Abstraction has 10612 states and 14737 transitions. [2022-07-21 13:53:33,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2022-07-21 13:53:33,906 INFO L276 IsEmpty]: Start isEmpty. Operand 10612 states and 14737 transitions. [2022-07-21 13:53:33,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-21 13:53:33,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:53:33,909 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:53:33,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 13:53:34,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:53:34,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:53:34,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:53:34,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2033981501, now seen corresponding path program 1 times [2022-07-21 13:53:34,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:53:34,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579640097] [2022-07-21 13:53:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:53:34,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:53:34,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:53:34,137 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:53:34,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 13:53:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:53:35,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:53:35,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:53:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2022-07-21 13:53:35,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:53:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2022-07-21 13:53:36,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:53:36,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579640097] [2022-07-21 13:53:36,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579640097] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:53:36,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:53:36,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:53:36,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616919999] [2022-07-21 13:53:36,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:53:36,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:53:36,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:53:36,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:53:36,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:53:36,313 INFO L87 Difference]: Start difference. First operand 10612 states and 14737 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 13:53:36,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:53:36,631 INFO L93 Difference]: Finished difference Result 10618 states and 14742 transitions. [2022-07-21 13:53:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:53:36,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 210 [2022-07-21 13:53:36,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:53:36,685 INFO L225 Difference]: With dead ends: 10618 [2022-07-21 13:53:36,685 INFO L226 Difference]: Without dead ends: 10616 [2022-07-21 13:53:36,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:53:36,696 INFO L413 NwaCegarLoop]: 2725 mSDtfsCounter, 2658 mSDsluCounter, 5431 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2668 SdHoareTripleChecker+Valid, 8156 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:53:36,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2668 Valid, 8156 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:53:36,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10616 states. [2022-07-21 13:53:36,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10616 to 10616. [2022-07-21 13:53:37,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10616 states, 7336 states have (on average 1.2722191930207198) internal successors, (9333), 7489 states have internal predecessors, (9333), 2702 states have call successors, (2702), 585 states have call predecessors, (2702), 575 states have return successors, (2705), 2623 states have call predecessors, (2705), 2698 states have call successors, (2705) [2022-07-21 13:53:37,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10616 states to 10616 states and 14740 transitions. [2022-07-21 13:53:37,042 INFO L78 Accepts]: Start accepts. Automaton has 10616 states and 14740 transitions. Word has length 210 [2022-07-21 13:53:37,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:53:37,045 INFO L495 AbstractCegarLoop]: Abstraction has 10616 states and 14740 transitions. [2022-07-21 13:53:37,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 13:53:37,045 INFO L276 IsEmpty]: Start isEmpty. Operand 10616 states and 14740 transitions. [2022-07-21 13:53:37,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-21 13:53:37,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:53:37,048 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:53:37,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 13:53:37,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:53:37,276 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:53:37,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:53:37,276 INFO L85 PathProgramCache]: Analyzing trace with hash 567579389, now seen corresponding path program 1 times [2022-07-21 13:53:37,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:53:37,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137280254] [2022-07-21 13:53:37,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:53:37,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:53:37,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:53:37,279 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:53:37,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 13:53:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:53:38,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:53:38,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:53:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2022-07-21 13:53:39,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:53:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2022-07-21 13:53:39,520 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:53:39,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137280254] [2022-07-21 13:53:39,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137280254] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:53:39,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:53:39,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:53:39,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839808236] [2022-07-21 13:53:39,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:53:39,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:53:39,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:53:39,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:53:39,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:53:39,522 INFO L87 Difference]: Start difference. First operand 10616 states and 14740 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 13:53:39,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:53:39,839 INFO L93 Difference]: Finished difference Result 10622 states and 14745 transitions. [2022-07-21 13:53:39,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:53:39,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 215 [2022-07-21 13:53:39,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:53:39,883 INFO L225 Difference]: With dead ends: 10622 [2022-07-21 13:53:39,883 INFO L226 Difference]: Without dead ends: 10620 [2022-07-21 13:53:39,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:53:39,892 INFO L413 NwaCegarLoop]: 2725 mSDtfsCounter, 2658 mSDsluCounter, 5431 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2667 SdHoareTripleChecker+Valid, 8156 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:53:39,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2667 Valid, 8156 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:53:39,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10620 states. [2022-07-21 13:53:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10620 to 10620. [2022-07-21 13:53:40,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10620 states, 7339 states have (on average 1.2721079166098923) internal successors, (9336), 7492 states have internal predecessors, (9336), 2702 states have call successors, (2702), 586 states have call predecessors, (2702), 576 states have return successors, (2705), 2623 states have call predecessors, (2705), 2698 states have call successors, (2705) [2022-07-21 13:53:40,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10620 states to 10620 states and 14743 transitions. [2022-07-21 13:53:40,331 INFO L78 Accepts]: Start accepts. Automaton has 10620 states and 14743 transitions. Word has length 215 [2022-07-21 13:53:40,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:53:40,331 INFO L495 AbstractCegarLoop]: Abstraction has 10620 states and 14743 transitions. [2022-07-21 13:53:40,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 13:53:40,332 INFO L276 IsEmpty]: Start isEmpty. Operand 10620 states and 14743 transitions. [2022-07-21 13:53:40,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-21 13:53:40,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:53:40,335 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:53:40,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 13:53:40,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:53:40,552 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:53:40,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:53:40,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1378185684, now seen corresponding path program 1 times [2022-07-21 13:53:40,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:53:40,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459791198] [2022-07-21 13:53:40,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:53:40,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:53:40,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:53:40,555 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:53:40,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 13:53:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:53:41,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:53:41,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:53:41,678 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2022-07-21 13:53:41,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:53:41,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:53:41,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459791198] [2022-07-21 13:53:41,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459791198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:53:41,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:53:41,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:53:41,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131811214] [2022-07-21 13:53:41,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:53:41,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:53:41,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:53:41,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:53:41,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:53:41,680 INFO L87 Difference]: Start difference. First operand 10620 states and 14743 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-21 13:53:42,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:53:42,360 INFO L93 Difference]: Finished difference Result 30593 states and 42516 transitions. [2022-07-21 13:53:42,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:53:42,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 231 [2022-07-21 13:53:42,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:53:42,441 INFO L225 Difference]: With dead ends: 30593 [2022-07-21 13:53:42,441 INFO L226 Difference]: Without dead ends: 20367 [2022-07-21 13:53:42,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:53:42,478 INFO L413 NwaCegarLoop]: 3689 mSDtfsCounter, 2600 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2600 SdHoareTripleChecker+Valid, 6389 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:53:42,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2600 Valid, 6389 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:53:42,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20367 states. [2022-07-21 13:53:43,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20367 to 20333. [2022-07-21 13:53:43,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20333 states, 14087 states have (on average 1.272733726130475) internal successors, (17929), 14361 states have internal predecessors, (17929), 5145 states have call successors, (5145), 1113 states have call predecessors, (5145), 1098 states have return successors, (5155), 5020 states have call predecessors, (5155), 5141 states have call successors, (5155) [2022-07-21 13:53:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20333 states to 20333 states and 28229 transitions. [2022-07-21 13:53:43,310 INFO L78 Accepts]: Start accepts. Automaton has 20333 states and 28229 transitions. Word has length 231 [2022-07-21 13:53:43,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:53:43,311 INFO L495 AbstractCegarLoop]: Abstraction has 20333 states and 28229 transitions. [2022-07-21 13:53:43,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-21 13:53:43,311 INFO L276 IsEmpty]: Start isEmpty. Operand 20333 states and 28229 transitions. [2022-07-21 13:53:43,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-21 13:53:43,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:53:43,316 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:53:43,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-21 13:53:43,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:53:43,544 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:53:43,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:53:43,545 INFO L85 PathProgramCache]: Analyzing trace with hash 650400426, now seen corresponding path program 1 times [2022-07-21 13:53:43,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:53:43,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061065478] [2022-07-21 13:53:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:53:43,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:53:43,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:53:43,548 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:53:43,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 13:53:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:53:44,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:53:44,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:53:44,648 INFO L134 CoverageAnalysis]: Checked inductivity of 708 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2022-07-21 13:53:44,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:53:44,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:53:44,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061065478] [2022-07-21 13:53:44,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061065478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:53:44,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:53:44,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:53:44,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395317631] [2022-07-21 13:53:44,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:53:44,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:53:44,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:53:44,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:53:44,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:53:44,651 INFO L87 Difference]: Start difference. First operand 20333 states and 28229 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-21 13:53:45,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:53:45,648 INFO L93 Difference]: Finished difference Result 49981 states and 69435 transitions. [2022-07-21 13:53:45,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:53:45,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 231 [2022-07-21 13:53:45,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:53:45,797 INFO L225 Difference]: With dead ends: 49981 [2022-07-21 13:53:45,797 INFO L226 Difference]: Without dead ends: 30042 [2022-07-21 13:53:45,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:53:45,887 INFO L413 NwaCegarLoop]: 5222 mSDtfsCounter, 2573 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2573 SdHoareTripleChecker+Valid, 7920 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:53:45,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2573 Valid, 7920 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:53:45,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30042 states. [2022-07-21 13:53:46,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30042 to 30038. [2022-07-21 13:53:46,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30038 states, 20827 states have (on average 1.2730590099390215) internal successors, (26514), 21222 states have internal predecessors, (26514), 7588 states have call successors, (7588), 1640 states have call predecessors, (7588), 1620 states have return successors, (7605), 7417 states have call predecessors, (7605), 7584 states have call successors, (7605) [2022-07-21 13:53:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30038 states to 30038 states and 41707 transitions. [2022-07-21 13:53:47,138 INFO L78 Accepts]: Start accepts. Automaton has 30038 states and 41707 transitions. Word has length 231 [2022-07-21 13:53:47,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:53:47,139 INFO L495 AbstractCegarLoop]: Abstraction has 30038 states and 41707 transitions. [2022-07-21 13:53:47,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-21 13:53:47,139 INFO L276 IsEmpty]: Start isEmpty. Operand 30038 states and 41707 transitions. [2022-07-21 13:53:47,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-07-21 13:53:47,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:53:47,144 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:53:47,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 13:53:47,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:53:47,360 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:53:47,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:53:47,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1892161539, now seen corresponding path program 1 times [2022-07-21 13:53:47,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:53:47,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961902204] [2022-07-21 13:53:47,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:53:47,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:53:47,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:53:47,366 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:53:47,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 13:53:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:53:48,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:53:48,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:53:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2022-07-21 13:53:49,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:53:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 691 trivial. 0 not checked. [2022-07-21 13:53:49,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:53:49,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961902204] [2022-07-21 13:53:49,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961902204] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:53:49,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:53:49,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:53:49,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533107940] [2022-07-21 13:53:49,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:53:49,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:53:49,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:53:49,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:53:49,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:53:49,607 INFO L87 Difference]: Start difference. First operand 30038 states and 41707 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-21 13:53:50,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:53:50,388 INFO L93 Difference]: Finished difference Result 30044 states and 41712 transitions. [2022-07-21 13:53:50,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:53:50,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 220 [2022-07-21 13:53:50,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:53:50,544 INFO L225 Difference]: With dead ends: 30044 [2022-07-21 13:53:50,544 INFO L226 Difference]: Without dead ends: 30042 [2022-07-21 13:53:50,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:53:50,571 INFO L413 NwaCegarLoop]: 2725 mSDtfsCounter, 2658 mSDsluCounter, 5431 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2666 SdHoareTripleChecker+Valid, 8156 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:53:50,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2666 Valid, 8156 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:53:50,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30042 states. [2022-07-21 13:53:51,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30042 to 30042. [2022-07-21 13:53:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30042 states, 20830 states have (on average 1.273019683149304) internal successors, (26517), 21225 states have internal predecessors, (26517), 7588 states have call successors, (7588), 1641 states have call predecessors, (7588), 1621 states have return successors, (7605), 7417 states have call predecessors, (7605), 7584 states have call successors, (7605) [2022-07-21 13:53:51,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30042 states to 30042 states and 41710 transitions. [2022-07-21 13:53:51,799 INFO L78 Accepts]: Start accepts. Automaton has 30042 states and 41710 transitions. Word has length 220 [2022-07-21 13:53:51,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:53:51,800 INFO L495 AbstractCegarLoop]: Abstraction has 30042 states and 41710 transitions. [2022-07-21 13:53:51,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-21 13:53:51,801 INFO L276 IsEmpty]: Start isEmpty. Operand 30042 states and 41710 transitions. [2022-07-21 13:53:51,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-21 13:53:51,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:53:51,805 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:53:51,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 13:53:52,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:53:52,019 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:53:52,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:53:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash 331270845, now seen corresponding path program 1 times [2022-07-21 13:53:52,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:53:52,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293704472] [2022-07-21 13:53:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:53:52,021 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:53:52,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:53:52,032 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:53:52,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 13:53:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:53:53,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:53:53,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:53:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2022-07-21 13:53:53,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:53:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2022-07-21 13:53:54,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:53:54,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293704472] [2022-07-21 13:53:54,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293704472] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:53:54,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:53:54,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:53:54,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318422015] [2022-07-21 13:53:54,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:53:54,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:53:54,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:53:54,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:53:54,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:53:54,221 INFO L87 Difference]: Start difference. First operand 30042 states and 41710 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 13:53:55,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:53:55,058 INFO L93 Difference]: Finished difference Result 30048 states and 41715 transitions. [2022-07-21 13:53:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:53:55,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 225 [2022-07-21 13:53:55,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:53:55,181 INFO L225 Difference]: With dead ends: 30048 [2022-07-21 13:53:55,182 INFO L226 Difference]: Without dead ends: 30046 [2022-07-21 13:53:55,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:53:55,203 INFO L413 NwaCegarLoop]: 2725 mSDtfsCounter, 2658 mSDsluCounter, 5431 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2665 SdHoareTripleChecker+Valid, 8156 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:53:55,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2665 Valid, 8156 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:53:55,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30046 states. [2022-07-21 13:53:56,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30046 to 30046. [2022-07-21 13:53:56,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30046 states, 20833 states have (on average 1.272980367685883) internal successors, (26520), 21228 states have internal predecessors, (26520), 7588 states have call successors, (7588), 1642 states have call predecessors, (7588), 1622 states have return successors, (7605), 7417 states have call predecessors, (7605), 7584 states have call successors, (7605) [2022-07-21 13:53:56,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30046 states to 30046 states and 41713 transitions. [2022-07-21 13:53:56,337 INFO L78 Accepts]: Start accepts. Automaton has 30046 states and 41713 transitions. Word has length 225 [2022-07-21 13:53:56,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:53:56,338 INFO L495 AbstractCegarLoop]: Abstraction has 30046 states and 41713 transitions. [2022-07-21 13:53:56,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 13:53:56,338 INFO L276 IsEmpty]: Start isEmpty. Operand 30046 states and 41713 transitions. [2022-07-21 13:53:56,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-21 13:53:56,342 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:53:56,342 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:53:56,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-21 13:53:56,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:53:56,563 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:53:56,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:53:56,564 INFO L85 PathProgramCache]: Analyzing trace with hash 800071140, now seen corresponding path program 1 times [2022-07-21 13:53:56,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:53:56,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670468364] [2022-07-21 13:53:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:53:56,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:53:56,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:53:56,566 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:53:56,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 13:53:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:53:57,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:53:57,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:53:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2022-07-21 13:53:57,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:53:57,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:53:57,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670468364] [2022-07-21 13:53:57,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670468364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:53:57,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:53:57,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:53:57,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116249557] [2022-07-21 13:53:57,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:53:57,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:53:57,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:53:57,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:53:57,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:53:57,819 INFO L87 Difference]: Start difference. First operand 30046 states and 41713 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 13:53:59,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:53:59,438 INFO L93 Difference]: Finished difference Result 69309 states and 96173 transitions. [2022-07-21 13:53:59,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:53:59,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 229 [2022-07-21 13:53:59,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:53:59,608 INFO L225 Difference]: With dead ends: 69309 [2022-07-21 13:53:59,609 INFO L226 Difference]: Without dead ends: 39657 [2022-07-21 13:53:59,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:53:59,719 INFO L413 NwaCegarLoop]: 4199 mSDtfsCounter, 1520 mSDsluCounter, 2661 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 6860 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:53:59,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 6860 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:53:59,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39657 states. [2022-07-21 13:54:01,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39657 to 39606. [2022-07-21 13:54:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39606 states, 27615 states have (on average 1.2736556219445954) internal successors, (35172), 28101 states have internal predecessors, (35172), 9790 states have call successors, (9790), 2222 states have call predecessors, (9790), 2198 states have return successors, (9807), 9587 states have call predecessors, (9807), 9786 states have call successors, (9807) [2022-07-21 13:54:01,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39606 states to 39606 states and 54769 transitions. [2022-07-21 13:54:01,254 INFO L78 Accepts]: Start accepts. Automaton has 39606 states and 54769 transitions. Word has length 229 [2022-07-21 13:54:01,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:54:01,255 INFO L495 AbstractCegarLoop]: Abstraction has 39606 states and 54769 transitions. [2022-07-21 13:54:01,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 13:54:01,256 INFO L276 IsEmpty]: Start isEmpty. Operand 39606 states and 54769 transitions. [2022-07-21 13:54:01,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-07-21 13:54:01,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:54:01,269 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:54:01,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 13:54:01,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:54:01,474 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:54:01,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:54:01,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1643427773, now seen corresponding path program 1 times [2022-07-21 13:54:01,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:54:01,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570255741] [2022-07-21 13:54:01,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:54:01,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:54:01,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:54:01,477 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:54:01,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 13:54:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:54:02,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:54:02,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:54:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2022-07-21 13:54:03,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:54:03,645 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2022-07-21 13:54:03,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:54:03,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570255741] [2022-07-21 13:54:03,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570255741] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:54:03,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:54:03,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:54:03,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521349780] [2022-07-21 13:54:03,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:54:03,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:54:03,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:54:03,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:54:03,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:54:03,646 INFO L87 Difference]: Start difference. First operand 39606 states and 54769 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-21 13:54:04,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:54:04,960 INFO L93 Difference]: Finished difference Result 39612 states and 54774 transitions. [2022-07-21 13:54:04,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:54:04,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 230 [2022-07-21 13:54:04,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:54:05,131 INFO L225 Difference]: With dead ends: 39612 [2022-07-21 13:54:05,132 INFO L226 Difference]: Without dead ends: 39610 [2022-07-21 13:54:05,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:54:05,156 INFO L413 NwaCegarLoop]: 2725 mSDtfsCounter, 2658 mSDsluCounter, 5431 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2664 SdHoareTripleChecker+Valid, 8156 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:54:05,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2664 Valid, 8156 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:54:05,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39610 states. [2022-07-21 13:54:06,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39610 to 39610. [2022-07-21 13:54:06,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39610 states, 27618 states have (on average 1.2736258961546818) internal successors, (35175), 28104 states have internal predecessors, (35175), 9790 states have call successors, (9790), 2223 states have call predecessors, (9790), 2199 states have return successors, (9807), 9587 states have call predecessors, (9807), 9786 states have call successors, (9807) [2022-07-21 13:54:06,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39610 states to 39610 states and 54772 transitions. [2022-07-21 13:54:06,585 INFO L78 Accepts]: Start accepts. Automaton has 39610 states and 54772 transitions. Word has length 230 [2022-07-21 13:54:06,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:54:06,585 INFO L495 AbstractCegarLoop]: Abstraction has 39610 states and 54772 transitions. [2022-07-21 13:54:06,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-21 13:54:06,585 INFO L276 IsEmpty]: Start isEmpty. Operand 39610 states and 54772 transitions. [2022-07-21 13:54:06,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-21 13:54:06,588 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:54:06,588 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:54:06,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 13:54:06,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:54:06,801 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:54:06,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:54:06,801 INFO L85 PathProgramCache]: Analyzing trace with hash 428343933, now seen corresponding path program 1 times [2022-07-21 13:54:06,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:54:06,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689187516] [2022-07-21 13:54:06,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:54:06,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:54:06,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:54:06,804 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:54:06,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-21 13:54:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:54:07,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:54:07,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:54:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2022-07-21 13:54:08,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:54:08,834 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2022-07-21 13:54:08,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:54:08,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689187516] [2022-07-21 13:54:08,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689187516] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:54:08,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:54:08,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:54:08,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033494623] [2022-07-21 13:54:08,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:54:08,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:54:08,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:54:08,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:54:08,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:54:08,836 INFO L87 Difference]: Start difference. First operand 39610 states and 54772 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-21 13:54:09,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:54:09,921 INFO L93 Difference]: Finished difference Result 41497 states and 56577 transitions. [2022-07-21 13:54:09,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:54:09,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 235 [2022-07-21 13:54:09,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:54:10,061 INFO L225 Difference]: With dead ends: 41497 [2022-07-21 13:54:10,062 INFO L226 Difference]: Without dead ends: 41495 [2022-07-21 13:54:10,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 463 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:54:10,090 INFO L413 NwaCegarLoop]: 2820 mSDtfsCounter, 2378 mSDsluCounter, 6048 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 8868 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:54:10,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2383 Valid, 8868 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:54:10,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41495 states. [2022-07-21 13:54:11,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41495 to 41495. [2022-07-21 13:54:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41495 states, 28905 states have (on average 1.26476388168137) internal successors, (36558), 29397 states have internal predecessors, (36558), 10000 states have call successors, (10000), 2611 states have call predecessors, (10000), 2587 states have return successors, (10017), 9797 states have call predecessors, (10017), 9996 states have call successors, (10017) [2022-07-21 13:54:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41495 states to 41495 states and 56575 transitions. [2022-07-21 13:54:11,700 INFO L78 Accepts]: Start accepts. Automaton has 41495 states and 56575 transitions. Word has length 235 [2022-07-21 13:54:11,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:54:11,700 INFO L495 AbstractCegarLoop]: Abstraction has 41495 states and 56575 transitions. [2022-07-21 13:54:11,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-21 13:54:11,701 INFO L276 IsEmpty]: Start isEmpty. Operand 41495 states and 56575 transitions. [2022-07-21 13:54:11,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-21 13:54:11,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:54:11,704 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:54:11,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-21 13:54:11,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:54:11,919 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:54:11,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:54:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1271756931, now seen corresponding path program 1 times [2022-07-21 13:54:11,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:54:11,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415685790] [2022-07-21 13:54:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:54:11,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:54:11,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:54:11,922 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:54:11,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-21 13:54:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:54:12,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1323 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:54:12,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:54:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-07-21 13:54:13,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:54:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-07-21 13:54:13,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:54:13,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415685790] [2022-07-21 13:54:13,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415685790] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:54:13,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:54:13,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:54:13,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517713136] [2022-07-21 13:54:13,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:54:13,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:54:13,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:54:13,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:54:13,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:54:13,916 INFO L87 Difference]: Start difference. First operand 41495 states and 56575 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 13:54:15,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:54:15,402 INFO L93 Difference]: Finished difference Result 41501 states and 56580 transitions. [2022-07-21 13:54:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:54:15,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 240 [2022-07-21 13:54:15,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:54:15,604 INFO L225 Difference]: With dead ends: 41501 [2022-07-21 13:54:15,604 INFO L226 Difference]: Without dead ends: 41499 [2022-07-21 13:54:15,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 473 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:54:15,637 INFO L413 NwaCegarLoop]: 2725 mSDtfsCounter, 2658 mSDsluCounter, 5431 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2662 SdHoareTripleChecker+Valid, 8156 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:54:15,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2662 Valid, 8156 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:54:15,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41499 states. [2022-07-21 13:54:17,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41499 to 41499. [2022-07-21 13:54:17,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41499 states, 28908 states have (on average 1.264736405147364) internal successors, (36561), 29400 states have internal predecessors, (36561), 10000 states have call successors, (10000), 2612 states have call predecessors, (10000), 2588 states have return successors, (10017), 9797 states have call predecessors, (10017), 9996 states have call successors, (10017) [2022-07-21 13:54:17,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41499 states to 41499 states and 56578 transitions. [2022-07-21 13:54:17,344 INFO L78 Accepts]: Start accepts. Automaton has 41499 states and 56578 transitions. Word has length 240 [2022-07-21 13:54:17,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:54:17,346 INFO L495 AbstractCegarLoop]: Abstraction has 41499 states and 56578 transitions. [2022-07-21 13:54:17,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 13:54:17,346 INFO L276 IsEmpty]: Start isEmpty. Operand 41499 states and 56578 transitions. [2022-07-21 13:54:17,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-07-21 13:54:17,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:54:17,350 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:54:17,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-21 13:54:17,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:54:17,563 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:54:17,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:54:17,564 INFO L85 PathProgramCache]: Analyzing trace with hash 678443581, now seen corresponding path program 1 times [2022-07-21 13:54:17,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:54:17,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1200553806] [2022-07-21 13:54:17,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:54:17,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:54:17,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:54:17,566 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:54:17,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-21 13:54:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:54:18,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 1330 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:54:18,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:54:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2022-07-21 13:54:19,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:54:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2022-07-21 13:54:19,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:54:19,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1200553806] [2022-07-21 13:54:19,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1200553806] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:54:19,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:54:19,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:54:19,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259317083] [2022-07-21 13:54:19,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:54:19,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:54:19,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:54:19,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:54:19,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:54:19,578 INFO L87 Difference]: Start difference. First operand 41499 states and 56578 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 13:54:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:54:21,067 INFO L93 Difference]: Finished difference Result 41505 states and 56583 transitions. [2022-07-21 13:54:21,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:54:21,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 245 [2022-07-21 13:54:21,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:54:21,233 INFO L225 Difference]: With dead ends: 41505 [2022-07-21 13:54:21,233 INFO L226 Difference]: Without dead ends: 41503 [2022-07-21 13:54:21,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:54:21,260 INFO L413 NwaCegarLoop]: 2725 mSDtfsCounter, 2658 mSDsluCounter, 5431 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 8156 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:54:21,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2661 Valid, 8156 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:54:21,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41503 states. [2022-07-21 13:54:22,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41503 to 41503. [2022-07-21 13:54:22,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41503 states, 28911 states have (on average 1.2647089343156583) internal successors, (36564), 29403 states have internal predecessors, (36564), 10000 states have call successors, (10000), 2613 states have call predecessors, (10000), 2589 states have return successors, (10017), 9797 states have call predecessors, (10017), 9996 states have call successors, (10017) [2022-07-21 13:54:22,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41503 states to 41503 states and 56581 transitions. [2022-07-21 13:54:22,968 INFO L78 Accepts]: Start accepts. Automaton has 41503 states and 56581 transitions. Word has length 245 [2022-07-21 13:54:22,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:54:22,969 INFO L495 AbstractCegarLoop]: Abstraction has 41503 states and 56581 transitions. [2022-07-21 13:54:22,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 13:54:22,970 INFO L276 IsEmpty]: Start isEmpty. Operand 41503 states and 56581 transitions. [2022-07-21 13:54:22,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-21 13:54:22,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:54:22,973 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 10, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:54:23,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-07-21 13:54:23,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:54:23,178 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:54:23,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:54:23,179 INFO L85 PathProgramCache]: Analyzing trace with hash -659466435, now seen corresponding path program 1 times [2022-07-21 13:54:23,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:54:23,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524169946] [2022-07-21 13:54:23,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:54:23,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:54:23,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:54:23,182 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:54:23,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-21 13:54:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:54:24,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:54:24,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:54:24,753 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2022-07-21 13:54:24,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:54:25,072 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2022-07-21 13:54:25,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:54:25,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524169946] [2022-07-21 13:54:25,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524169946] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:54:25,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:54:25,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:54:25,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190876862] [2022-07-21 13:54:25,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:54:25,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:54:25,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:54:25,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:54:25,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:54:25,074 INFO L87 Difference]: Start difference. First operand 41503 states and 56581 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 13:54:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:54:26,277 INFO L93 Difference]: Finished difference Result 41509 states and 56586 transitions. [2022-07-21 13:54:26,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:54:26,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 250 [2022-07-21 13:54:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:54:26,524 INFO L225 Difference]: With dead ends: 41509 [2022-07-21 13:54:26,524 INFO L226 Difference]: Without dead ends: 41507 [2022-07-21 13:54:26,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 493 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:54:26,541 INFO L413 NwaCegarLoop]: 2725 mSDtfsCounter, 2658 mSDsluCounter, 5431 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2660 SdHoareTripleChecker+Valid, 8156 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:54:26,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2660 Valid, 8156 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:54:26,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41507 states. [2022-07-21 13:54:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41507 to 41507. [2022-07-21 13:54:28,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41507 states, 28914 states have (on average 1.264681469184478) internal successors, (36567), 29406 states have internal predecessors, (36567), 10000 states have call successors, (10000), 2614 states have call predecessors, (10000), 2590 states have return successors, (10017), 9797 states have call predecessors, (10017), 9996 states have call successors, (10017) [2022-07-21 13:54:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41507 states to 41507 states and 56584 transitions. [2022-07-21 13:54:28,271 INFO L78 Accepts]: Start accepts. Automaton has 41507 states and 56584 transitions. Word has length 250 [2022-07-21 13:54:28,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:54:28,272 INFO L495 AbstractCegarLoop]: Abstraction has 41507 states and 56584 transitions. [2022-07-21 13:54:28,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 13:54:28,273 INFO L276 IsEmpty]: Start isEmpty. Operand 41507 states and 56584 transitions. [2022-07-21 13:54:28,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-21 13:54:28,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:54:28,277 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 11, 11, 11, 11, 11, 11, 11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:54:28,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-21 13:54:28,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:54:28,492 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:54:28,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:54:28,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2071201209, now seen corresponding path program 1 times [2022-07-21 13:54:28,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:54:28,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893687621] [2022-07-21 13:54:28,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:54:28,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:54:28,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:54:28,495 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:54:28,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-21 13:54:29,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:54:29,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 13:54:29,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:54:30,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 237 proven. 3 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2022-07-21 13:54:30,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:54:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 51 proven. 18 refuted. 0 times theorem prover too weak. 951 trivial. 0 not checked. [2022-07-21 13:54:30,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:54:30,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893687621] [2022-07-21 13:54:30,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893687621] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 13:54:30,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 13:54:30,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 22 [2022-07-21 13:54:30,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012479141] [2022-07-21 13:54:30,942 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 13:54:30,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 13:54:30,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:54:30,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 13:54:30,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-07-21 13:54:30,945 INFO L87 Difference]: Start difference. First operand 41507 states and 56584 transitions. Second operand has 22 states, 21 states have (on average 5.476190476190476) internal successors, (115), 20 states have internal predecessors, (115), 6 states have call successors, (57), 3 states have call predecessors, (57), 8 states have return successors, (56), 7 states have call predecessors, (56), 6 states have call successors, (56) [2022-07-21 13:54:53,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:54:53,931 INFO L93 Difference]: Finished difference Result 109808 states and 149603 transitions. [2022-07-21 13:54:53,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 13:54:53,933 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.476190476190476) internal successors, (115), 20 states have internal predecessors, (115), 6 states have call successors, (57), 3 states have call predecessors, (57), 8 states have return successors, (56), 7 states have call predecessors, (56), 6 states have call successors, (56) Word has length 291 [2022-07-21 13:54:53,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:54:54,191 INFO L225 Difference]: With dead ends: 109808 [2022-07-21 13:54:54,191 INFO L226 Difference]: Without dead ends: 68234 [2022-07-21 13:54:54,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2022-07-21 13:54:54,311 INFO L413 NwaCegarLoop]: 5947 mSDtfsCounter, 8030 mSDsluCounter, 86117 mSDsCounter, 0 mSdLazyCounter, 7611 mSolverCounterSat, 1596 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8262 SdHoareTripleChecker+Valid, 92064 SdHoareTripleChecker+Invalid, 9207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1596 IncrementalHoareTripleChecker+Valid, 7611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:54:54,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8262 Valid, 92064 Invalid, 9207 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1596 Valid, 7611 Invalid, 0 Unknown, 0 Unchecked, 19.1s Time] [2022-07-21 13:54:54,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68234 states. [2022-07-21 13:54:56,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68234 to 54638. [2022-07-21 13:54:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54638 states, 38060 states have (on average 1.2641618497109826) internal successors, (48114), 38698 states have internal predecessors, (48114), 13142 states have call successors, (13142), 3462 states have call predecessors, (13142), 3433 states have return successors, (13166), 12889 states have call predecessors, (13166), 13138 states have call successors, (13166) [2022-07-21 13:54:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54638 states to 54638 states and 74422 transitions. [2022-07-21 13:54:57,299 INFO L78 Accepts]: Start accepts. Automaton has 54638 states and 74422 transitions. Word has length 291 [2022-07-21 13:54:57,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:54:57,300 INFO L495 AbstractCegarLoop]: Abstraction has 54638 states and 74422 transitions. [2022-07-21 13:54:57,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.476190476190476) internal successors, (115), 20 states have internal predecessors, (115), 6 states have call successors, (57), 3 states have call predecessors, (57), 8 states have return successors, (56), 7 states have call predecessors, (56), 6 states have call successors, (56) [2022-07-21 13:54:57,300 INFO L276 IsEmpty]: Start isEmpty. Operand 54638 states and 74422 transitions. [2022-07-21 13:54:57,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-07-21 13:54:57,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:54:57,304 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 11, 11, 11, 11, 11, 11, 11, 10, 10, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:54:57,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-21 13:54:57,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:54:57,519 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:54:57,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:54:57,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1514704387, now seen corresponding path program 1 times [2022-07-21 13:54:57,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:54:57,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823864145] [2022-07-21 13:54:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:54:57,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:54:57,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:54:57,522 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:54:57,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-21 13:54:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:54:58,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 1344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:54:58,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:54:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 859 trivial. 0 not checked. [2022-07-21 13:54:59,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:54:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 879 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 859 trivial. 0 not checked. [2022-07-21 13:54:59,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:54:59,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823864145] [2022-07-21 13:54:59,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823864145] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:54:59,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:54:59,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:54:59,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379375222] [2022-07-21 13:54:59,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:54:59,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:54:59,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:54:59,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:54:59,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:54:59,824 INFO L87 Difference]: Start difference. First operand 54638 states and 74422 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-21 13:55:01,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:55:01,747 INFO L93 Difference]: Finished difference Result 54644 states and 74427 transitions. [2022-07-21 13:55:01,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:55:01,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 255 [2022-07-21 13:55:01,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:55:02,020 INFO L225 Difference]: With dead ends: 54644 [2022-07-21 13:55:02,020 INFO L226 Difference]: Without dead ends: 54640 [2022-07-21 13:55:02,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:55:02,056 INFO L413 NwaCegarLoop]: 2725 mSDtfsCounter, 2658 mSDsluCounter, 5431 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2659 SdHoareTripleChecker+Valid, 8156 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:55:02,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2659 Valid, 8156 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:55:02,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54640 states. [2022-07-21 13:55:04,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54640 to 54640. [2022-07-21 13:55:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54640 states, 38062 states have (on average 1.2641216961799169) internal successors, (48115), 38699 states have internal predecessors, (48115), 13142 states have call successors, (13142), 3463 states have call predecessors, (13142), 3433 states have return successors, (13166), 12889 states have call predecessors, (13166), 13138 states have call successors, (13166) [2022-07-21 13:55:04,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54640 states to 54640 states and 74423 transitions. [2022-07-21 13:55:04,799 INFO L78 Accepts]: Start accepts. Automaton has 54640 states and 74423 transitions. Word has length 255 [2022-07-21 13:55:04,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:55:04,799 INFO L495 AbstractCegarLoop]: Abstraction has 54640 states and 74423 transitions. [2022-07-21 13:55:04,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-21 13:55:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 54640 states and 74423 transitions. [2022-07-21 13:55:04,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-21 13:55:04,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:55:04,803 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 11, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:55:04,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-07-21 13:55:05,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:55:05,008 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:55:05,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:55:05,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1305401603, now seen corresponding path program 1 times [2022-07-21 13:55:05,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:55:05,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074783423] [2022-07-21 13:55:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:55:05,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:55:05,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:55:05,011 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:55:05,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-21 13:55:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:55:05,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:55:05,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:55:06,882 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2022-07-21 13:55:06,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:55:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2022-07-21 13:55:07,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:55:07,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074783423] [2022-07-21 13:55:07,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074783423] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:55:07,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:55:07,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:55:07,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166067601] [2022-07-21 13:55:07,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:55:07,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:55:07,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:55:07,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:55:07,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:55:07,328 INFO L87 Difference]: Start difference. First operand 54640 states and 74423 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 13:55:09,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:55:09,562 INFO L93 Difference]: Finished difference Result 54640 states and 74423 transitions. [2022-07-21 13:55:09,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:55:09,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 260 [2022-07-21 13:55:09,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:55:09,803 INFO L225 Difference]: With dead ends: 54640 [2022-07-21 13:55:09,803 INFO L226 Difference]: Without dead ends: 53964 [2022-07-21 13:55:09,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:55:09,840 INFO L413 NwaCegarLoop]: 2723 mSDtfsCounter, 2654 mSDsluCounter, 5430 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2654 SdHoareTripleChecker+Valid, 8153 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:55:09,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2654 Valid, 8153 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:55:09,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53964 states. [2022-07-21 13:55:11,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53964 to 40969. [2022-07-21 13:55:11,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40969 states, 28563 states have (on average 1.2635927598641599) internal successors, (36092), 29016 states have internal predecessors, (36092), 9828 states have call successors, (9828), 2591 states have call predecessors, (9828), 2576 states have return successors, (9849), 9670 states have call predecessors, (9849), 9828 states have call successors, (9849) [2022-07-21 13:55:12,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40969 states to 40969 states and 55769 transitions. [2022-07-21 13:55:12,084 INFO L78 Accepts]: Start accepts. Automaton has 40969 states and 55769 transitions. Word has length 260 [2022-07-21 13:55:12,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:55:12,085 INFO L495 AbstractCegarLoop]: Abstraction has 40969 states and 55769 transitions. [2022-07-21 13:55:12,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 13:55:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 40969 states and 55769 transitions. [2022-07-21 13:55:12,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-07-21 13:55:12,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:55:12,091 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 11, 11, 11, 11, 11, 11, 8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:55:12,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-21 13:55:12,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:55:12,312 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:55:12,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:55:12,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1550306375, now seen corresponding path program 1 times [2022-07-21 13:55:12,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:55:12,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394393625] [2022-07-21 13:55:12,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:55:12,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:55:12,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:55:12,315 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:55:12,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-21 13:55:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:55:13,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:55:13,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:55:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 880 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2022-07-21 13:55:13,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:55:13,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:55:13,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394393625] [2022-07-21 13:55:13,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394393625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:55:13,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:55:13,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:55:13,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897647770] [2022-07-21 13:55:13,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:55:13,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:55:13,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:55:13,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:55:13,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:55:13,690 INFO L87 Difference]: Start difference. First operand 40969 states and 55769 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29)