./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-irda-vlsi_ir.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-irda-vlsi_ir.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 75b1aed7e7cb1bec6496160634d456a50c33979e7f90c34d568c6a02281e03b1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 13:54:44,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 13:54:44,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 13:54:44,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 13:54:44,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 13:54:44,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 13:54:44,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 13:54:44,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 13:54:44,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 13:54:44,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 13:54:44,827 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 13:54:44,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 13:54:44,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 13:54:44,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 13:54:44,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 13:54:44,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 13:54:44,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 13:54:44,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 13:54:44,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 13:54:44,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 13:54:44,849 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 13:54:44,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 13:54:44,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 13:54:44,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 13:54:44,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 13:54:44,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 13:54:44,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 13:54:44,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 13:54:44,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 13:54:44,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 13:54:44,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 13:54:44,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 13:54:44,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 13:54:44,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 13:54:44,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 13:54:44,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 13:54:44,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 13:54:44,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 13:54:44,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 13:54:44,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 13:54:44,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 13:54:44,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 13:54:44,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 13:54:44,918 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 13:54:44,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 13:54:44,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 13:54:44,919 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 13:54:44,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 13:54:44,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 13:54:44,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 13:54:44,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 13:54:44,922 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 13:54:44,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 13:54:44,923 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 13:54:44,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 13:54:44,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 13:54:44,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 13:54:44,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 13:54:44,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 13:54:44,924 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 13:54:44,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 13:54:44,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 13:54:44,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 13:54:44,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 13:54:44,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 13:54:44,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 13:54:44,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 13:54:44,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 13:54:44,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 13:54:44,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 13:54:44,927 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 13:54:44,927 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 13:54:44,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 13:54:44,928 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75b1aed7e7cb1bec6496160634d456a50c33979e7f90c34d568c6a02281e03b1 [2022-07-21 13:54:45,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 13:54:45,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 13:54:45,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 13:54:45,343 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 13:54:45,344 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 13:54:45,346 INFO L432 ainManager$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-irda-vlsi_ir.cil.i [2022-07-21 13:54:45,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d28f29b47/a47c015bdfc145cf9dfd03ed8f218c69/FLAG306b2fb1f [2022-07-21 13:54:46,295 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 13:54:46,296 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-irda-vlsi_ir.cil.i [2022-07-21 13:54:46,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d28f29b47/a47c015bdfc145cf9dfd03ed8f218c69/FLAG306b2fb1f [2022-07-21 13:54:46,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d28f29b47/a47c015bdfc145cf9dfd03ed8f218c69 [2022-07-21 13:54:46,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 13:54:46,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 13:54:46,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 13:54:46,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 13:54:46,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 13:54:46,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:54:46" (1/1) ... [2022-07-21 13:54:46,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37126c78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:54:46, skipping insertion in model container [2022-07-21 13:54:46,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:54:46" (1/1) ... [2022-07-21 13:54:46,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 13:54:46,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 13:54:50,470 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-irda-vlsi_ir.cil.i[347848,347861] [2022-07-21 13:54:50,473 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-irda-vlsi_ir.cil.i[348017,348030] [2022-07-21 13:54:50,473 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-irda-vlsi_ir.cil.i[348184,348197] [2022-07-21 13:54:50,474 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-irda-vlsi_ir.cil.i[348352,348365] [2022-07-21 13:54:50,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:54:50,524 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 13:54:50,843 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: clkctl = (unsigned int )clkctl & 127U [8537] 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: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 13:54:50,876 INFO L158 Benchmark]: Toolchain (without parser) took 4093.05ms. Allocated memory was 56.6MB in the beginning and 123.7MB in the end (delta: 67.1MB). Free memory was 29.7MB in the beginning and 50.4MB in the end (delta: -20.7MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2022-07-21 13:54:50,877 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 56.6MB. Free memory was 37.7MB in the beginning and 37.7MB in the end (delta: 38.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 13:54:50,879 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4089.31ms. Allocated memory was 56.6MB in the beginning and 123.7MB in the end (delta: 67.1MB). Free memory was 29.6MB in the beginning and 50.4MB in the end (delta: -20.8MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2022-07-21 13:54:50,896 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 56.6MB. Free memory was 37.7MB in the beginning and 37.7MB in the end (delta: 38.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4089.31ms. Allocated memory was 56.6MB in the beginning and 123.7MB in the end (delta: 67.1MB). Free memory was 29.6MB in the beginning and 50.4MB in the end (delta: -20.8MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: clkctl = (unsigned int )clkctl & 127U [8537] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: clkctl = (unsigned int )clkctl & 127U [8537]: 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-irda-vlsi_ir.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 75b1aed7e7cb1bec6496160634d456a50c33979e7f90c34d568c6a02281e03b1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 13:54:52,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 13:54:52,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 13:54:52,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 13:54:52,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 13:54:52,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 13:54:52,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 13:54:52,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 13:54:52,734 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 13:54:52,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 13:54:52,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 13:54:52,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 13:54:52,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 13:54:52,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 13:54:52,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 13:54:52,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 13:54:52,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 13:54:52,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 13:54:52,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 13:54:52,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 13:54:52,761 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 13:54:52,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 13:54:52,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 13:54:52,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 13:54:52,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 13:54:52,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 13:54:52,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 13:54:52,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 13:54:52,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 13:54:52,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 13:54:52,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 13:54:52,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 13:54:52,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 13:54:52,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 13:54:52,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 13:54:52,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 13:54:52,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 13:54:52,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 13:54:52,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 13:54:52,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 13:54:52,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 13:54:52,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 13:54:52,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 13:54:52,825 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 13:54:52,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 13:54:52,826 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 13:54:52,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 13:54:52,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 13:54:52,828 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 13:54:52,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 13:54:52,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 13:54:52,829 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 13:54:52,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 13:54:52,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 13:54:52,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 13:54:52,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 13:54:52,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 13:54:52,831 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 13:54:52,832 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 13:54:52,832 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 13:54:52,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 13:54:52,832 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 13:54:52,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 13:54:52,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 13:54:52,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 13:54:52,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 13:54:52,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 13:54:52,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 13:54:52,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 13:54:52,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 13:54:52,834 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 13:54:52,835 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 13:54:52,835 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 13:54:52,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 13:54:52,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 13:54:52,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 13:54:52,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75b1aed7e7cb1bec6496160634d456a50c33979e7f90c34d568c6a02281e03b1 [2022-07-21 13:54:53,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 13:54:53,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 13:54:53,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 13:54:53,237 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 13:54:53,239 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 13:54:53,241 INFO L432 ainManager$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-irda-vlsi_ir.cil.i [2022-07-21 13:54:53,296 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33a3b22a9/fae1ffe88dbc4275b233861647a69a5f/FLAG83ab411fe [2022-07-21 13:54:54,126 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 13:54:54,126 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-irda-vlsi_ir.cil.i [2022-07-21 13:54:54,179 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33a3b22a9/fae1ffe88dbc4275b233861647a69a5f/FLAG83ab411fe [2022-07-21 13:54:54,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33a3b22a9/fae1ffe88dbc4275b233861647a69a5f [2022-07-21 13:54:54,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 13:54:54,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 13:54:54,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 13:54:54,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 13:54:54,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 13:54:54,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:54:54" (1/1) ... [2022-07-21 13:54:54,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a333a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:54:54, skipping insertion in model container [2022-07-21 13:54:54,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:54:54" (1/1) ... [2022-07-21 13:54:54,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 13:54:54,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 13:54:57,447 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-irda-vlsi_ir.cil.i[347848,347861] [2022-07-21 13:54:57,450 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-irda-vlsi_ir.cil.i[348017,348030] [2022-07-21 13:54:57,451 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-irda-vlsi_ir.cil.i[348184,348197] [2022-07-21 13:54:57,452 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-irda-vlsi_ir.cil.i[348352,348365] [2022-07-21 13:54:57,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:54:57,523 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 13:54:57,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 13:54:57,870 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-irda-vlsi_ir.cil.i[347848,347861] [2022-07-21 13:54:57,870 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-irda-vlsi_ir.cil.i[348017,348030] [2022-07-21 13:54:57,871 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-irda-vlsi_ir.cil.i[348184,348197] [2022-07-21 13:54:57,871 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-irda-vlsi_ir.cil.i[348352,348365] [2022-07-21 13:54:57,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:54:57,924 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 13:54:58,296 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-irda-vlsi_ir.cil.i[347848,347861] [2022-07-21 13:54:58,297 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-irda-vlsi_ir.cil.i[348017,348030] [2022-07-21 13:54:58,297 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-irda-vlsi_ir.cil.i[348184,348197] [2022-07-21 13:54:58,297 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-irda-vlsi_ir.cil.i[348352,348365] [2022-07-21 13:54:58,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:54:58,453 INFO L208 MainTranslator]: Completed translation [2022-07-21 13:54:58,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:54:58 WrapperNode [2022-07-21 13:54:58,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 13:54:58,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 13:54:58,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 13:54:58,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 13:54:58,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:54:58" (1/1) ... [2022-07-21 13:54:58,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:54:58" (1/1) ... [2022-07-21 13:54:58,745 INFO L137 Inliner]: procedures = 465, calls = 2209, calls flagged for inlining = 206, calls inlined = 184, statements flattened = 4937 [2022-07-21 13:54:58,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 13:54:58,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 13:54:58,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 13:54:58,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 13:54:58,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:54:58" (1/1) ... [2022-07-21 13:54:58,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:54:58" (1/1) ... [2022-07-21 13:54:58,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:54:58" (1/1) ... [2022-07-21 13:54:58,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:54:58" (1/1) ... [2022-07-21 13:54:58,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:54:58" (1/1) ... [2022-07-21 13:54:58,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:54:58" (1/1) ... [2022-07-21 13:54:59,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:54:58" (1/1) ... [2022-07-21 13:54:59,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 13:54:59,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 13:54:59,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 13:54:59,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 13:54:59,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:54:58" (1/1) ... [2022-07-21 13:54:59,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 13:54:59,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 13:54:59,085 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 13:54:59,100 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 13:54:59,126 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-07-21 13:54:59,127 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-07-21 13:54:59,127 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-07-21 13:54:59,127 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-07-21 13:54:59,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 13:54:59,127 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 13:54:59,128 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2022-07-21 13:54:59,128 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2022-07-21 13:54:59,128 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_count [2022-07-21 13:54:59,128 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_count [2022-07-21 13:54:59,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 13:54:59,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 13:54:59,128 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_status [2022-07-21 13:54:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_status [2022-07-21 13:54:59,129 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-07-21 13:54:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-07-21 13:54:59,129 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_cpu [2022-07-21 13:54:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_cpu [2022-07-21 13:54:59,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-21 13:54:59,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-21 13:54:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_ring_debug [2022-07-21 13:54:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_ring_debug [2022-07-21 13:54:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-07-21 13:54:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-07-21 13:54:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_65 [2022-07-21 13:54:59,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_65 [2022-07-21 13:54:59,130 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2022-07-21 13:54:59,131 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2022-07-21 13:54:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_close [2022-07-21 13:54:59,131 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_close [2022-07-21 13:54:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_resume [2022-07-21 13:54:59,131 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_resume [2022-07-21 13:54:59,131 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-07-21 13:54:59,131 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-07-21 13:54:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-21 13:54:59,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-07-21 13:54:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-07-21 13:54:59,132 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-07-21 13:54:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-21 13:54:59,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-21 13:54:59,132 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_free_ring [2022-07-21 13:54:59,133 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_free_ring [2022-07-21 13:54:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2022-07-21 13:54:59,133 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2022-07-21 13:54:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 13:54:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-07-21 13:54:59,133 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-07-21 13:54:59,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 13:54:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-07-21 13:54:59,134 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-07-21 13:54:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 13:54:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-21 13:54:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 13:54:59,134 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 13:54:59,134 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_tx_timeout [2022-07-21 13:54:59,135 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_tx_timeout [2022-07-21 13:54:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-21 13:54:59,135 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-21 13:54:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_destroy_hwif [2022-07-21 13:54:59,135 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_destroy_hwif [2022-07-21 13:54:59,135 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-21 13:54:59,135 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-21 13:54:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-07-21 13:54:59,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-07-21 13:54:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_stop_hw [2022-07-21 13:54:59,136 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_stop_hw [2022-07-21 13:54:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-07-21 13:54:59,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-07-21 13:54:59,136 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_irda_remove [2022-07-21 13:54:59,136 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_irda_remove [2022-07-21 13:54:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 13:54:59,137 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 13:54:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2022-07-21 13:54:59,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2022-07-21 13:54:59,137 INFO L130 BoogieDeclarations]: Found specification of procedure pci_choose_state [2022-07-21 13:54:59,137 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_choose_state [2022-07-21 13:54:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_clear_regs [2022-07-21 13:54:59,138 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_clear_regs [2022-07-21 13:54:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2022-07-21 13:54:59,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2022-07-21 13:54:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-07-21 13:54:59,138 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-07-21 13:54:59,138 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_start_hw [2022-07-21 13:54:59,138 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_start_hw [2022-07-21 13:54:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-07-21 13:54:59,139 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-07-21 13:54:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-07-21 13:54:59,139 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-07-21 13:54:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure rd_activate [2022-07-21 13:54:59,139 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_activate [2022-07-21 13:54:59,139 INFO L130 BoogieDeclarations]: Found specification of procedure rd_is_active [2022-07-21 13:54:59,140 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_is_active [2022-07-21 13:54:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-21 13:54:59,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-21 13:54:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 13:54:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-07-21 13:54:59,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-07-21 13:54:59,140 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_count [2022-07-21 13:54:59,141 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_count [2022-07-21 13:54:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2022-07-21 13:54:59,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2022-07-21 13:54:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 13:54:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-21 13:54:59,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-21 13:54:59,141 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-21 13:54:59,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-21 13:54:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 13:54:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 13:54:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_open [2022-07-21 13:54:59,142 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_open [2022-07-21 13:54:59,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-21 13:54:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-21 13:54:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 13:54:59,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 13:54:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-21 13:54:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_vlsi_mod_exit_11_2 [2022-07-21 13:54:59,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_vlsi_mod_exit_11_2 [2022-07-21 13:54:59,143 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-07-21 13:54:59,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-07-21 13:54:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-21 13:54:59,144 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-21 13:54:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2022-07-21 13:54:59,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2022-07-21 13:54:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_reg_debug [2022-07-21 13:54:59,144 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_reg_debug [2022-07-21 13:54:59,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-21 13:54:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_set_baud [2022-07-21 13:54:59,145 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_set_baud [2022-07-21 13:54:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 13:54:59,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 13:54:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 13:54:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 13:54:59,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 13:54:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 13:54:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 13:54:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 13:54:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 13:54:59,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 13:54:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-21 13:54:59,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-21 13:54:59,146 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-07-21 13:54:59,147 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-07-21 13:54:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2022-07-21 13:54:59,147 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2022-07-21 13:54:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_status [2022-07-21 13:54:59,147 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_status [2022-07-21 13:54:59,147 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 13:54:59,147 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 13:54:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-07-21 13:54:59,148 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-07-21 13:54:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 13:54:59,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 13:54:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-21 13:54:59,148 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-21 13:54:59,148 INFO L130 BoogieDeclarations]: Found specification of procedure ring_get [2022-07-21 13:54:59,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_get [2022-07-21 13:54:59,149 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2022-07-21 13:54:59,149 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2022-07-21 13:54:59,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 13:54:59,149 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-21 13:54:59,149 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-21 13:54:59,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 13:54:59,149 INFO L130 BoogieDeclarations]: Found specification of procedure ring_last [2022-07-21 13:54:59,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_last [2022-07-21 13:54:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 13:54:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 13:54:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 13:54:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 13:54:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure ring_put [2022-07-21 13:54:59,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_put [2022-07-21 13:54:59,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 13:54:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_byte [2022-07-21 13:54:59,151 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_byte [2022-07-21 13:54:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2022-07-21 13:54:59,151 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2022-07-21 13:54:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2022-07-21 13:54:59,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~C_ULONG~X~C_INT~TO~VOID [2022-07-21 13:54:59,151 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-07-21 13:54:59,152 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-07-21 13:54:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-21 13:54:59,152 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-21 13:54:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-21 13:54:59,152 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-21 13:54:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-07-21 13:54:59,152 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-07-21 13:54:59,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-07-21 13:54:59,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-07-21 13:54:59,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2022-07-21 13:54:59,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2022-07-21 13:54:59,153 INFO L130 BoogieDeclarations]: Found specification of procedure rd_set_addr_status [2022-07-21 13:54:59,153 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_set_addr_status [2022-07-21 13:54:59,153 INFO L130 BoogieDeclarations]: Found specification of procedure rd_get_addr [2022-07-21 13:54:59,153 INFO L138 BoogieDeclarations]: Found implementation of procedure rd_get_addr [2022-07-21 13:54:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-21 13:54:59,154 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-21 13:54:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2022-07-21 13:54:59,154 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2022-07-21 13:54:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 13:54:59,154 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 13:54:59,154 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 13:54:59,154 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 13:54:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-21 13:54:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure net_ratelimit [2022-07-21 13:54:59,155 INFO L138 BoogieDeclarations]: Found implementation of procedure net_ratelimit [2022-07-21 13:54:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-21 13:54:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 13:54:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-21 13:54:59,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 13:54:59,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 13:54:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure irlap_close [2022-07-21 13:54:59,156 INFO L138 BoogieDeclarations]: Found implementation of procedure irlap_close [2022-07-21 13:54:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-07-21 13:54:59,156 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-07-21 13:54:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-21 13:54:59,156 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-21 13:54:59,156 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_tx [2022-07-21 13:54:59,157 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_tx [2022-07-21 13:54:59,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-07-21 13:54:59,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-07-21 13:54:59,157 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_alloc_ring [2022-07-21 13:54:59,157 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_alloc_ring [2022-07-21 13:54:59,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_vlsi_irda_dev [2022-07-21 13:54:59,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_vlsi_irda_dev [2022-07-21 13:54:59,157 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_fill_rx [2022-07-21 13:54:59,158 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_fill_rx [2022-07-21 13:54:59,158 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-07-21 13:54:59,158 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-07-21 13:54:59,158 INFO L130 BoogieDeclarations]: Found specification of procedure vlsi_process_rx [2022-07-21 13:54:59,158 INFO L138 BoogieDeclarations]: Found implementation of procedure vlsi_process_rx [2022-07-21 13:54:59,158 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2022-07-21 13:54:59,158 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2022-07-21 13:54:59,159 INFO L130 BoogieDeclarations]: Found specification of procedure inw [2022-07-21 13:54:59,159 INFO L138 BoogieDeclarations]: Found implementation of procedure inw [2022-07-21 13:54:59,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-07-21 13:54:59,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-07-21 13:54:59,159 INFO L130 BoogieDeclarations]: Found specification of procedure ring_first [2022-07-21 13:54:59,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ring_first [2022-07-21 13:54:59,159 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dma_sync_single_for_device [2022-07-21 13:54:59,160 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dma_sync_single_for_device [2022-07-21 13:54:59,987 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 13:54:59,990 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 13:55:01,875 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 13:55:23,416 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-07-21 13:55:23,470 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 13:55:23,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 13:55:23,494 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 13:55:23,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:55:23 BoogieIcfgContainer [2022-07-21 13:55:23,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 13:55:23,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 13:55:23,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 13:55:23,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 13:55:23,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:54:54" (1/3) ... [2022-07-21 13:55:23,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd97e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:55:23, skipping insertion in model container [2022-07-21 13:55:23,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:54:58" (2/3) ... [2022-07-21 13:55:23,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd97e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:55:23, skipping insertion in model container [2022-07-21 13:55:23,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:55:23" (3/3) ... [2022-07-21 13:55:23,507 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-irda-vlsi_ir.cil.i [2022-07-21 13:55:23,520 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 13:55:23,520 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-21 13:55:23,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 13:55:23,616 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@6d5deef6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4b141fe2 [2022-07-21 13:55:23,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 13:55:23,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 1886 states, 1268 states have (on average 1.2854889589905363) internal successors, (1630), 1294 states have internal predecessors, (1630), 512 states have call successors, (512), 104 states have call predecessors, (512), 103 states have return successors, (505), 502 states have call predecessors, (505), 505 states have call successors, (505) [2022-07-21 13:55:23,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 13:55:23,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:55:23,656 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 13:55:23,656 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 13:55:23,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:55:23,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2147203978, now seen corresponding path program 1 times [2022-07-21 13:55:23,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:55:23,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142181290] [2022-07-21 13:55:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:55:23,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:55:23,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:55:23,683 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 13:55:23,692 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 13:55:24,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:55:24,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:55:24,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:55:24,959 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 13:55:24,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:55:24,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:55:24,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142181290] [2022-07-21 13:55:24,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142181290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:55:24,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:55:24,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:55:24,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502743633] [2022-07-21 13:55:24,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:55:24,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:55:24,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:55:24,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:55:24,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:55:24,994 INFO L87 Difference]: Start difference. First operand has 1886 states, 1268 states have (on average 1.2854889589905363) internal successors, (1630), 1294 states have internal predecessors, (1630), 512 states have call successors, (512), 104 states have call predecessors, (512), 103 states have return successors, (505), 502 states have call predecessors, (505), 505 states have call successors, (505) 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 13:55:27,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 13:55:27,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:55:27,572 INFO L93 Difference]: Finished difference Result 5475 states and 7807 transitions. [2022-07-21 13:55:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:55:27,575 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 13:55:27,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:55:27,628 INFO L225 Difference]: With dead ends: 5475 [2022-07-21 13:55:27,628 INFO L226 Difference]: Without dead ends: 3605 [2022-07-21 13:55:27,649 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 13:55:27,653 INFO L413 NwaCegarLoop]: 3096 mSDtfsCounter, 2484 mSDsluCounter, 2534 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2484 SdHoareTripleChecker+Valid, 5630 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:55:27,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2484 Valid, 5630 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 13:55:27,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2022-07-21 13:55:27,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 3601. [2022-07-21 13:55:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2435 states have (on average 1.2739219712525667) internal successors, (3102), 2484 states have internal predecessors, (3102), 961 states have call successors, (961), 203 states have call predecessors, (961), 202 states have return successors, (957), 951 states have call predecessors, (957), 957 states have call successors, (957) [2022-07-21 13:55:27,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5020 transitions. [2022-07-21 13:55:27,971 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5020 transitions. Word has length 149 [2022-07-21 13:55:27,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:55:27,975 INFO L495 AbstractCegarLoop]: Abstraction has 3601 states and 5020 transitions. [2022-07-21 13:55:27,975 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 13:55:27,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5020 transitions. [2022-07-21 13:55:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-21 13:55:27,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:55:27,986 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] [2022-07-21 13:55:28,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 13:55:28,207 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 13:55:28,208 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 13:55:28,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:55:28,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1243014584, now seen corresponding path program 1 times [2022-07-21 13:55:28,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:55:28,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810494221] [2022-07-21 13:55:28,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:55:28,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:55:28,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:55:28,213 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 13:55:28,216 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 13:55:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:55:29,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:55:29,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:55:29,369 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 13:55:29,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:55:29,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:55:29,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810494221] [2022-07-21 13:55:29,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810494221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:55:29,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:55:29,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:55:29,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663147328] [2022-07-21 13:55:29,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:55:29,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:55:29,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:55:29,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:55:29,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:55:29,373 INFO L87 Difference]: Start difference. First operand 3601 states and 5020 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, (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 13:55:31,489 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 13:55:31,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:55:31,820 INFO L93 Difference]: Finished difference Result 10433 states and 14518 transitions. [2022-07-21 13:55:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:55:31,821 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, (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 150 [2022-07-21 13:55:31,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:55:31,880 INFO L225 Difference]: With dead ends: 10433 [2022-07-21 13:55:31,880 INFO L226 Difference]: Without dead ends: 6859 [2022-07-21 13:55:31,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 148 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 13:55:31,903 INFO L413 NwaCegarLoop]: 3308 mSDtfsCounter, 2374 mSDsluCounter, 2538 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2374 SdHoareTripleChecker+Valid, 5846 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:55:31,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2374 Valid, 5846 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 13:55:31,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6859 states. [2022-07-21 13:55:32,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6859 to 6829. [2022-07-21 13:55:32,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6829 states, 4632 states have (on average 1.270509499136442) internal successors, (5885), 4730 states have internal predecessors, (5885), 1797 states have call successors, (1797), 402 states have call predecessors, (1797), 397 states have return successors, (1807), 1768 states have call predecessors, (1807), 1793 states have call successors, (1807) [2022-07-21 13:55:32,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6829 states to 6829 states and 9489 transitions. [2022-07-21 13:55:32,263 INFO L78 Accepts]: Start accepts. Automaton has 6829 states and 9489 transitions. Word has length 150 [2022-07-21 13:55:32,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:55:32,264 INFO L495 AbstractCegarLoop]: Abstraction has 6829 states and 9489 transitions. [2022-07-21 13:55:32,264 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, (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 13:55:32,264 INFO L276 IsEmpty]: Start isEmpty. Operand 6829 states and 9489 transitions. [2022-07-21 13:55:32,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-21 13:55:32,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:55:32,268 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, 1, 1] [2022-07-21 13:55:32,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 13:55:32,491 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 13:55:32,492 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 13:55:32,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:55:32,493 INFO L85 PathProgramCache]: Analyzing trace with hash 645334117, now seen corresponding path program 1 times [2022-07-21 13:55:32,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:55:32,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508516395] [2022-07-21 13:55:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:55:32,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:55:32,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:55:32,496 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 13:55:32,497 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 13:55:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:55:33,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1644 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:55:33,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:55:33,620 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 13:55:33,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:55:33,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:55:33,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508516395] [2022-07-21 13:55:33,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508516395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:55:33,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:55:33,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:55:33,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37275776] [2022-07-21 13:55:33,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:55:33,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:55:33,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:55:33,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:55:33,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:55:33,624 INFO L87 Difference]: Start difference. First operand 6829 states and 9489 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 13:55:35,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 13:55:36,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:55:36,219 INFO L93 Difference]: Finished difference Result 19759 states and 27353 transitions. [2022-07-21 13:55:36,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:55:36,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 158 [2022-07-21 13:55:36,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:55:36,337 INFO L225 Difference]: With dead ends: 19759 [2022-07-21 13:55:36,337 INFO L226 Difference]: Without dead ends: 12957 [2022-07-21 13:55:36,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 156 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 13:55:36,382 INFO L413 NwaCegarLoop]: 3059 mSDtfsCounter, 2316 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2316 SdHoareTripleChecker+Valid, 5608 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:55:36,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2316 Valid, 5608 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 13:55:36,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12957 states. [2022-07-21 13:55:36,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12957 to 12925. [2022-07-21 13:55:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12925 states, 8776 states have (on average 1.2640154968094803) internal successors, (11093), 8950 states have internal predecessors, (11093), 3359 states have call successors, (3359), 796 states have call predecessors, (3359), 787 states have return successors, (3389), 3296 states have call predecessors, (3389), 3355 states have call successors, (3389) [2022-07-21 13:55:36,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12925 states to 12925 states and 17841 transitions. [2022-07-21 13:55:36,943 INFO L78 Accepts]: Start accepts. Automaton has 12925 states and 17841 transitions. Word has length 158 [2022-07-21 13:55:36,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:55:36,945 INFO L495 AbstractCegarLoop]: Abstraction has 12925 states and 17841 transitions. [2022-07-21 13:55:36,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 13:55:36,946 INFO L276 IsEmpty]: Start isEmpty. Operand 12925 states and 17841 transitions. [2022-07-21 13:55:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-21 13:55:36,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:55:36,952 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 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] [2022-07-21 13:55:36,985 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 13:55:37,175 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 13:55:37,176 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 13:55:37,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:55:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1178511947, now seen corresponding path program 1 times [2022-07-21 13:55:37,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:55:37,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341132734] [2022-07-21 13:55:37,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:55:37,179 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:55:37,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:55:37,181 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 13:55:37,183 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 13:55:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:55:38,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 1891 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:55:38,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:55:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 505 trivial. 0 not checked. [2022-07-21 13:55:38,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:55:38,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:55:38,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341132734] [2022-07-21 13:55:38,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341132734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:55:38,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:55:38,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:55:38,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185040431] [2022-07-21 13:55:38,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:55:38,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:55:38,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:55:38,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:55:38,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:55:38,452 INFO L87 Difference]: Start difference. First operand 12925 states and 17841 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-21 13:55:40,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 13:55:41,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:55:41,233 INFO L93 Difference]: Finished difference Result 23181 states and 31975 transitions. [2022-07-21 13:55:41,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:55:41,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 212 [2022-07-21 13:55:41,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:55:41,302 INFO L225 Difference]: With dead ends: 23181 [2022-07-21 13:55:41,302 INFO L226 Difference]: Without dead ends: 10283 [2022-07-21 13:55:41,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 210 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 13:55:41,359 INFO L413 NwaCegarLoop]: 3450 mSDtfsCounter, 1646 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 5989 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-21 13:55:41,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1646 Valid, 5989 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 66 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-21 13:55:41,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10283 states. [2022-07-21 13:55:41,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10283 to 10251. [2022-07-21 13:55:41,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10251 states, 6991 states have (on average 1.265913317122014) internal successors, (8850), 7140 states have internal predecessors, (8850), 2594 states have call successors, (2594), 672 states have call predecessors, (2594), 663 states have return successors, (2607), 2534 states have call predecessors, (2607), 2590 states have call successors, (2607) [2022-07-21 13:55:41,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10251 states to 10251 states and 14051 transitions. [2022-07-21 13:55:41,830 INFO L78 Accepts]: Start accepts. Automaton has 10251 states and 14051 transitions. Word has length 212 [2022-07-21 13:55:41,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:55:41,831 INFO L495 AbstractCegarLoop]: Abstraction has 10251 states and 14051 transitions. [2022-07-21 13:55:41,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-21 13:55:41,831 INFO L276 IsEmpty]: Start isEmpty. Operand 10251 states and 14051 transitions. [2022-07-21 13:55:41,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-07-21 13:55:41,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:55:41,836 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 11, 11, 11, 11, 11, 11, 3, 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] [2022-07-21 13:55:41,881 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 13:55:42,055 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 13:55:42,055 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 13:55:42,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:55:42,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1257416363, now seen corresponding path program 1 times [2022-07-21 13:55:42,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:55:42,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [148569069] [2022-07-21 13:55:42,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:55:42,058 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:55:42,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:55:42,060 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 13:55:42,062 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 13:55:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:55:42,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 1667 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:55:42,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:55:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-07-21 13:55:43,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:55:43,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:55:43,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [148569069] [2022-07-21 13:55:43,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [148569069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:55:43,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:55:43,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 13:55:43,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558788127] [2022-07-21 13:55:43,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:55:43,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:55:43,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:55:43,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:55:43,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:55:43,864 INFO L87 Difference]: Start difference. First operand 10251 states and 14051 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 13:55:44,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:55:44,426 INFO L93 Difference]: Finished difference Result 29634 states and 40666 transitions. [2022-07-21 13:55:44,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:55:44,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 198 [2022-07-21 13:55:44,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:55:44,507 INFO L225 Difference]: With dead ends: 29634 [2022-07-21 13:55:44,508 INFO L226 Difference]: Without dead ends: 19570 [2022-07-21 13:55:44,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 196 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 13:55:44,538 INFO L413 NwaCegarLoop]: 3098 mSDtfsCounter, 2400 mSDsluCounter, 2566 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 5664 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:55:44,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2400 Valid, 5664 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:55:44,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19570 states. [2022-07-21 13:55:45,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19570 to 19544. [2022-07-21 13:55:45,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19544 states, 13375 states have (on average 1.2657196261682242) internal successors, (16929), 13667 states have internal predecessors, (16929), 4878 states have call successors, (4878), 1317 states have call predecessors, (4878), 1288 states have return successors, (4936), 4741 states have call predecessors, (4936), 4874 states have call successors, (4936) [2022-07-21 13:55:45,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19544 states to 19544 states and 26743 transitions. [2022-07-21 13:55:45,268 INFO L78 Accepts]: Start accepts. Automaton has 19544 states and 26743 transitions. Word has length 198 [2022-07-21 13:55:45,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:55:45,268 INFO L495 AbstractCegarLoop]: Abstraction has 19544 states and 26743 transitions. [2022-07-21 13:55:45,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 13:55:45,269 INFO L276 IsEmpty]: Start isEmpty. Operand 19544 states and 26743 transitions. [2022-07-21 13:55:45,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-07-21 13:55:45,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:55:45,273 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 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] [2022-07-21 13:55:45,309 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 13:55:45,491 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 13:55:45,491 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 13:55:45,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:55:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash -882447260, now seen corresponding path program 1 times [2022-07-21 13:55:45,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:55:45,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491568830] [2022-07-21 13:55:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:55:45,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:55:45,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:55:45,496 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 13:55:45,499 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 13:55:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:55:46,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:55:46,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:55:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2022-07-21 13:55:46,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:55:46,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:55:46,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491568830] [2022-07-21 13:55:46,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491568830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:55:46,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:55:46,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:55:46,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705193518] [2022-07-21 13:55:46,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:55:46,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:55:46,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:55:46,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:55:46,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:55:46,547 INFO L87 Difference]: Start difference. First operand 19544 states and 26743 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-21 13:55:47,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:55:47,225 INFO L93 Difference]: Finished difference Result 39125 states and 53603 transitions. [2022-07-21 13:55:47,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:55:47,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 221 [2022-07-21 13:55:47,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:55:47,328 INFO L225 Difference]: With dead ends: 39125 [2022-07-21 13:55:47,329 INFO L226 Difference]: Without dead ends: 19768 [2022-07-21 13:55:47,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 219 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 13:55:47,402 INFO L413 NwaCegarLoop]: 2600 mSDtfsCounter, 18 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5195 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:55:47,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5195 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:55:47,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19768 states. [2022-07-21 13:55:48,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19768 to 19720. [2022-07-21 13:55:48,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19720 states, 13535 states have (on average 1.2696712227558182) internal successors, (17185), 13827 states have internal predecessors, (17185), 4894 states have call successors, (4894), 1317 states have call predecessors, (4894), 1288 states have return successors, (4952), 4757 states have call predecessors, (4952), 4890 states have call successors, (4952) [2022-07-21 13:55:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19720 states to 19720 states and 27031 transitions. [2022-07-21 13:55:48,240 INFO L78 Accepts]: Start accepts. Automaton has 19720 states and 27031 transitions. Word has length 221 [2022-07-21 13:55:48,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:55:48,241 INFO L495 AbstractCegarLoop]: Abstraction has 19720 states and 27031 transitions. [2022-07-21 13:55:48,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-21 13:55:48,242 INFO L276 IsEmpty]: Start isEmpty. Operand 19720 states and 27031 transitions. [2022-07-21 13:55:48,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-21 13:55:48,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:55:48,246 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 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] [2022-07-21 13:55:48,284 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 13:55:48,459 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 13:55:48,459 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 13:55:48,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:55:48,460 INFO L85 PathProgramCache]: Analyzing trace with hash -202137699, now seen corresponding path program 1 times [2022-07-21 13:55:48,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:55:48,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331245528] [2022-07-21 13:55:48,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:55:48,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:55:48,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:55:48,463 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 13:55:48,464 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 13:55:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:55:49,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 1759 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 13:55:49,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:55:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 232 proven. 1 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2022-07-21 13:55:49,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:55:49,784 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2022-07-21 13:55:49,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:55:49,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331245528] [2022-07-21 13:55:49,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331245528] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 13:55:49,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 13:55:49,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-21 13:55:49,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380541465] [2022-07-21 13:55:49,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 13:55:49,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 13:55:49,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:55:49,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 13:55:49,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 13:55:49,787 INFO L87 Difference]: Start difference. First operand 19720 states and 27031 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 13:55:50,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:55:50,669 INFO L93 Difference]: Finished difference Result 39525 states and 54227 transitions. [2022-07-21 13:55:50,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:55:50,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 225 [2022-07-21 13:55:50,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:55:50,782 INFO L225 Difference]: With dead ends: 39525 [2022-07-21 13:55:50,782 INFO L226 Difference]: Without dead ends: 19992 [2022-07-21 13:55:50,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 13:55:50,843 INFO L413 NwaCegarLoop]: 2611 mSDtfsCounter, 102 mSDsluCounter, 5190 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 7801 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:55:50,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 7801 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:55:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19992 states. [2022-07-21 13:55:51,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19992 to 19944. [2022-07-21 13:55:51,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19944 states, 13743 states have (on average 1.2725751291566616) internal successors, (17489), 14035 states have internal predecessors, (17489), 4910 states have call successors, (4910), 1317 states have call predecessors, (4910), 1288 states have return successors, (4968), 4773 states have call predecessors, (4968), 4906 states have call successors, (4968) [2022-07-21 13:55:51,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19944 states to 19944 states and 27367 transitions. [2022-07-21 13:55:51,608 INFO L78 Accepts]: Start accepts. Automaton has 19944 states and 27367 transitions. Word has length 225 [2022-07-21 13:55:51,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:55:51,609 INFO L495 AbstractCegarLoop]: Abstraction has 19944 states and 27367 transitions. [2022-07-21 13:55:51,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 13:55:51,610 INFO L276 IsEmpty]: Start isEmpty. Operand 19944 states and 27367 transitions. [2022-07-21 13:55:51,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-21 13:55:51,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:55:51,614 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 4, 4, 4, 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] [2022-07-21 13:55:51,657 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 13:55:51,835 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 13:55:51,836 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 13:55:51,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:55:51,836 INFO L85 PathProgramCache]: Analyzing trace with hash -737014186, now seen corresponding path program 2 times [2022-07-21 13:55:51,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:55:51,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621918158] [2022-07-21 13:55:51,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 13:55:51,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:55:51,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:55:51,840 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 13:55:51,842 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 13:55:52,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 13:55:52,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 13:55:52,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1347 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:55:52,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:55:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2022-07-21 13:55:54,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:55:54,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:55:54,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621918158] [2022-07-21 13:55:54,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621918158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:55:54,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:55:54,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 13:55:54,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506231697] [2022-07-21 13:55:54,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:55:54,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:55:54,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:55:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:55:54,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:55:54,348 INFO L87 Difference]: Start difference. First operand 19944 states and 27367 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-21 13:55:54,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:55:54,955 INFO L93 Difference]: Finished difference Result 19950 states and 27372 transitions. [2022-07-21 13:55:54,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:55:54,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 229 [2022-07-21 13:55:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:55:55,039 INFO L225 Difference]: With dead ends: 19950 [2022-07-21 13:55:55,039 INFO L226 Difference]: Without dead ends: 19948 [2022-07-21 13:55:55,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:55:55,050 INFO L413 NwaCegarLoop]: 2605 mSDtfsCounter, 2509 mSDsluCounter, 5197 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2510 SdHoareTripleChecker+Valid, 7802 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:55:55,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2510 Valid, 7802 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:55:55,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19948 states. [2022-07-21 13:55:55,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19948 to 19948. [2022-07-21 13:55:55,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19948 states, 13746 states have (on average 1.2725156409137204) internal successors, (17492), 14038 states have internal predecessors, (17492), 4910 states have call successors, (4910), 1318 states have call predecessors, (4910), 1289 states have return successors, (4968), 4773 states have call predecessors, (4968), 4906 states have call successors, (4968) [2022-07-21 13:55:55,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19948 states to 19948 states and 27370 transitions. [2022-07-21 13:55:55,881 INFO L78 Accepts]: Start accepts. Automaton has 19948 states and 27370 transitions. Word has length 229 [2022-07-21 13:55:55,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:55:55,882 INFO L495 AbstractCegarLoop]: Abstraction has 19948 states and 27370 transitions. [2022-07-21 13:55:55,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-21 13:55:55,882 INFO L276 IsEmpty]: Start isEmpty. Operand 19948 states and 27370 transitions. [2022-07-21 13:55:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-21 13:55:55,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:55:55,886 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 4, 4, 4, 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] [2022-07-21 13:55:55,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-21 13:55:56,107 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 13:55:56,108 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 13:55:56,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:55:56,108 INFO L85 PathProgramCache]: Analyzing trace with hash 742204719, now seen corresponding path program 1 times [2022-07-21 13:55:56,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:55:56,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187929613] [2022-07-21 13:55:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:55:56,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:55:56,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:55:56,111 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 13:55:56,113 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 13:55:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:55:57,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:55:57,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:55:57,219 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 731 trivial. 0 not checked. [2022-07-21 13:55:57,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:55:57,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:55:57,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187929613] [2022-07-21 13:55:57,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187929613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:55:57,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:55:57,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:55:57,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053062833] [2022-07-21 13:55:57,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:55:57,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:55:57,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:55:57,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:55:57,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:55:57,221 INFO L87 Difference]: Start difference. First operand 19948 states and 27370 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 13:55:59,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 13:56:00,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:00,167 INFO L93 Difference]: Finished difference Result 57348 states and 78700 transitions. [2022-07-21 13:56:00,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:56:00,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 234 [2022-07-21 13:56:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:00,325 INFO L225 Difference]: With dead ends: 57348 [2022-07-21 13:56:00,325 INFO L226 Difference]: Without dead ends: 37587 [2022-07-21 13:56:00,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 232 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 13:56:00,406 INFO L413 NwaCegarLoop]: 3315 mSDtfsCounter, 2406 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2406 SdHoareTripleChecker+Valid, 5896 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:00,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2406 Valid, 5896 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 13:56:00,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37587 states. [2022-07-21 13:56:01,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37587 to 37583. [2022-07-21 13:56:01,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37583 states, 25825 states have (on average 1.2683446272991288) internal successors, (32755), 26327 states have internal predecessors, (32755), 9312 states have call successors, (9312), 2492 states have call predecessors, (9312), 2443 states have return successors, (9432), 9103 states have call predecessors, (9432), 9308 states have call successors, (9432) [2022-07-21 13:56:01,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37583 states to 37583 states and 51499 transitions. [2022-07-21 13:56:01,760 INFO L78 Accepts]: Start accepts. Automaton has 37583 states and 51499 transitions. Word has length 234 [2022-07-21 13:56:01,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:01,761 INFO L495 AbstractCegarLoop]: Abstraction has 37583 states and 51499 transitions. [2022-07-21 13:56:01,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-21 13:56:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 37583 states and 51499 transitions. [2022-07-21 13:56:01,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-21 13:56:01,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:01,769 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 4, 4, 4, 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] [2022-07-21 13:56:01,806 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-07-21 13:56:01,985 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 13:56:01,986 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 13:56:01,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:01,986 INFO L85 PathProgramCache]: Analyzing trace with hash 764836973, now seen corresponding path program 1 times [2022-07-21 13:56:01,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:01,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353187180] [2022-07-21 13:56:01,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:01,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:01,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:01,990 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 13:56:01,992 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 13:56:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:03,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:03,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2022-07-21 13:56:04,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:05,208 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 796 trivial. 0 not checked. [2022-07-21 13:56:05,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:05,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353187180] [2022-07-21 13:56:05,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353187180] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:05,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:05,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:05,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093271836] [2022-07-21 13:56:05,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:05,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:05,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:05,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:05,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:05,211 INFO L87 Difference]: Start difference. First operand 37583 states and 51499 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 13:56:06,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:06,217 INFO L93 Difference]: Finished difference Result 37589 states and 51504 transitions. [2022-07-21 13:56:06,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:06,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 234 [2022-07-21 13:56:06,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:06,378 INFO L225 Difference]: With dead ends: 37589 [2022-07-21 13:56:06,379 INFO L226 Difference]: Without dead ends: 37587 [2022-07-21 13:56:06,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 461 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 13:56:06,406 INFO L413 NwaCegarLoop]: 2608 mSDtfsCounter, 2529 mSDsluCounter, 5196 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2540 SdHoareTripleChecker+Valid, 7804 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:06,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2540 Valid, 7804 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:06,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37587 states. [2022-07-21 13:56:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37587 to 37587. [2022-07-21 13:56:07,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37587 states, 25828 states have (on average 1.268313458262351) internal successors, (32758), 26330 states have internal predecessors, (32758), 9312 states have call successors, (9312), 2493 states have call predecessors, (9312), 2444 states have return successors, (9432), 9103 states have call predecessors, (9432), 9308 states have call successors, (9432) [2022-07-21 13:56:07,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37587 states to 37587 states and 51502 transitions. [2022-07-21 13:56:07,688 INFO L78 Accepts]: Start accepts. Automaton has 37587 states and 51502 transitions. Word has length 234 [2022-07-21 13:56:07,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:07,688 INFO L495 AbstractCegarLoop]: Abstraction has 37587 states and 51502 transitions. [2022-07-21 13:56:07,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 13:56:07,689 INFO L276 IsEmpty]: Start isEmpty. Operand 37587 states and 51502 transitions. [2022-07-21 13:56:07,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-21 13:56:07,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:07,694 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 4, 4, 4, 3, 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] [2022-07-21 13:56:07,718 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 13:56:07,896 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 13:56:07,896 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 13:56:07,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:07,897 INFO L85 PathProgramCache]: Analyzing trace with hash 27919672, now seen corresponding path program 1 times [2022-07-21 13:56:07,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:07,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312507562] [2022-07-21 13:56:07,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:07,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:07,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:07,901 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 13:56:07,903 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 13:56:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:09,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:09,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:10,549 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2022-07-21 13:56:10,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:11,271 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2022-07-21 13:56:11,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:11,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312507562] [2022-07-21 13:56:11,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1312507562] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:11,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:11,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:11,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70402634] [2022-07-21 13:56:11,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:11,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:11,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:11,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:11,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:11,273 INFO L87 Difference]: Start difference. First operand 37587 states and 51502 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 13:56:12,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:12,092 INFO L93 Difference]: Finished difference Result 37593 states and 51507 transitions. [2022-07-21 13:56:12,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:12,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 239 [2022-07-21 13:56:12,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:12,237 INFO L225 Difference]: With dead ends: 37593 [2022-07-21 13:56:12,238 INFO L226 Difference]: Without dead ends: 37591 [2022-07-21 13:56:12,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 471 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 13:56:12,261 INFO L413 NwaCegarLoop]: 2608 mSDtfsCounter, 2529 mSDsluCounter, 5196 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2539 SdHoareTripleChecker+Valid, 7804 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:12,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2539 Valid, 7804 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:12,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37591 states. [2022-07-21 13:56:13,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37591 to 37591. [2022-07-21 13:56:13,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37591 states, 25831 states have (on average 1.2682822964654872) internal successors, (32761), 26333 states have internal predecessors, (32761), 9312 states have call successors, (9312), 2494 states have call predecessors, (9312), 2445 states have return successors, (9432), 9103 states have call predecessors, (9432), 9308 states have call successors, (9432) [2022-07-21 13:56:13,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37591 states to 37591 states and 51505 transitions. [2022-07-21 13:56:13,484 INFO L78 Accepts]: Start accepts. Automaton has 37591 states and 51505 transitions. Word has length 239 [2022-07-21 13:56:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:13,485 INFO L495 AbstractCegarLoop]: Abstraction has 37591 states and 51505 transitions. [2022-07-21 13:56:13,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 13:56:13,485 INFO L276 IsEmpty]: Start isEmpty. Operand 37591 states and 51505 transitions. [2022-07-21 13:56:13,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-07-21 13:56:13,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:13,489 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 5, 5, 5, 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, 1, 1, 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 13:56:13,512 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 13:56:13,689 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 13:56:13,689 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 13:56:13,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:13,690 INFO L85 PathProgramCache]: Analyzing trace with hash -797327161, now seen corresponding path program 1 times [2022-07-21 13:56:13,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:13,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760925501] [2022-07-21 13:56:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:13,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:13,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:13,693 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 13:56:13,693 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 13:56:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:14,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:56:14,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 751 trivial. 0 not checked. [2022-07-21 13:56:14,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:56:14,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:14,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760925501] [2022-07-21 13:56:14,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760925501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:56:14,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:56:14,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:56:14,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491907782] [2022-07-21 13:56:14,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:14,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:56:14,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:14,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:56:14,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:14,818 INFO L87 Difference]: Start difference. First operand 37591 states and 51505 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-21 13:56:16,935 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 13:56:18,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:18,245 INFO L93 Difference]: Finished difference Result 92681 states and 127041 transitions. [2022-07-21 13:56:18,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:56:18,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 257 [2022-07-21 13:56:18,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:18,590 INFO L225 Difference]: With dead ends: 92681 [2022-07-21 13:56:18,590 INFO L226 Difference]: Without dead ends: 55277 [2022-07-21 13:56:18,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 255 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 13:56:18,692 INFO L413 NwaCegarLoop]: 5025 mSDtfsCounter, 2438 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 7608 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:18,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2438 Valid, 7608 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 13:56:18,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55277 states. [2022-07-21 13:56:20,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55277 to 55049. [2022-07-21 13:56:20,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55049 states, 37782 states have (on average 1.2669789847017099) internal successors, (47869), 38496 states have internal predecessors, (47869), 13675 states have call successors, (13675), 3658 states have call predecessors, (13675), 3589 states have return successors, (13857), 13392 states have call predecessors, (13857), 13671 states have call successors, (13857) [2022-07-21 13:56:20,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55049 states to 55049 states and 75401 transitions. [2022-07-21 13:56:20,579 INFO L78 Accepts]: Start accepts. Automaton has 55049 states and 75401 transitions. Word has length 257 [2022-07-21 13:56:20,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:20,580 INFO L495 AbstractCegarLoop]: Abstraction has 55049 states and 75401 transitions. [2022-07-21 13:56:20,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-21 13:56:20,580 INFO L276 IsEmpty]: Start isEmpty. Operand 55049 states and 75401 transitions. [2022-07-21 13:56:20,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-07-21 13:56:20,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:20,585 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 4, 4, 4, 4, 3, 3, 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] [2022-07-21 13:56:20,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-07-21 13:56:20,799 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 13:56:20,799 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 13:56:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:20,800 INFO L85 PathProgramCache]: Analyzing trace with hash 789601037, now seen corresponding path program 1 times [2022-07-21 13:56:20,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:20,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985727801] [2022-07-21 13:56:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:20,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:20,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:20,803 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 13:56:20,804 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 13:56:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:21,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1784 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:21,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2022-07-21 13:56:23,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 808 trivial. 0 not checked. [2022-07-21 13:56:23,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:23,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985727801] [2022-07-21 13:56:23,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985727801] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:23,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:23,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:23,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741922640] [2022-07-21 13:56:23,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:23,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:23,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:23,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:23,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:23,971 INFO L87 Difference]: Start difference. First operand 55049 states and 75401 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 13:56:25,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:25,343 INFO L93 Difference]: Finished difference Result 55055 states and 75406 transitions. [2022-07-21 13:56:25,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:25,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 244 [2022-07-21 13:56:25,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:25,641 INFO L225 Difference]: With dead ends: 55055 [2022-07-21 13:56:25,641 INFO L226 Difference]: Without dead ends: 55053 [2022-07-21 13:56:25,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 481 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 13:56:25,660 INFO L413 NwaCegarLoop]: 2608 mSDtfsCounter, 2529 mSDsluCounter, 5196 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2538 SdHoareTripleChecker+Valid, 7804 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:25,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2538 Valid, 7804 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:25,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55053 states. [2022-07-21 13:56:27,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55053 to 55053. [2022-07-21 13:56:27,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55053 states, 37785 states have (on average 1.266957787481805) internal successors, (47872), 38499 states have internal predecessors, (47872), 13675 states have call successors, (13675), 3659 states have call predecessors, (13675), 3590 states have return successors, (13857), 13392 states have call predecessors, (13857), 13671 states have call successors, (13857) [2022-07-21 13:56:27,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55053 states to 55053 states and 75404 transitions. [2022-07-21 13:56:27,529 INFO L78 Accepts]: Start accepts. Automaton has 55053 states and 75404 transitions. Word has length 244 [2022-07-21 13:56:27,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:27,530 INFO L495 AbstractCegarLoop]: Abstraction has 55053 states and 75404 transitions. [2022-07-21 13:56:27,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 13:56:27,530 INFO L276 IsEmpty]: Start isEmpty. Operand 55053 states and 75404 transitions. [2022-07-21 13:56:27,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-07-21 13:56:27,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:27,535 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 5, 4, 4, 4, 4, 4, 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] [2022-07-21 13:56:27,586 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 13:56:27,751 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 13:56:27,751 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 13:56:27,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:27,752 INFO L85 PathProgramCache]: Analyzing trace with hash -387155432, now seen corresponding path program 1 times [2022-07-21 13:56:27,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:27,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79414849] [2022-07-21 13:56:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:27,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:27,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:27,755 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 13:56:27,756 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 13:56:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:28,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:28,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:30,404 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2022-07-21 13:56:30,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:31,157 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 820 trivial. 0 not checked. [2022-07-21 13:56:31,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:31,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79414849] [2022-07-21 13:56:31,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79414849] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:31,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:31,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:31,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975525008] [2022-07-21 13:56:31,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:31,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:31,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:31,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:31,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:31,159 INFO L87 Difference]: Start difference. First operand 55053 states and 75404 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 13:56:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:32,466 INFO L93 Difference]: Finished difference Result 55059 states and 75409 transitions. [2022-07-21 13:56:32,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:32,467 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 249 [2022-07-21 13:56:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:32,709 INFO L225 Difference]: With dead ends: 55059 [2022-07-21 13:56:32,709 INFO L226 Difference]: Without dead ends: 55057 [2022-07-21 13:56:32,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 491 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 13:56:32,740 INFO L413 NwaCegarLoop]: 2608 mSDtfsCounter, 2529 mSDsluCounter, 5196 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2537 SdHoareTripleChecker+Valid, 7804 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:32,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2537 Valid, 7804 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55057 states. [2022-07-21 13:56:34,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55057 to 55057. [2022-07-21 13:56:34,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55057 states, 37788 states have (on average 1.2669365936276067) internal successors, (47875), 38502 states have internal predecessors, (47875), 13675 states have call successors, (13675), 3660 states have call predecessors, (13675), 3591 states have return successors, (13857), 13392 states have call predecessors, (13857), 13671 states have call successors, (13857) [2022-07-21 13:56:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55057 states to 55057 states and 75407 transitions. [2022-07-21 13:56:34,858 INFO L78 Accepts]: Start accepts. Automaton has 55057 states and 75407 transitions. Word has length 249 [2022-07-21 13:56:34,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:34,859 INFO L495 AbstractCegarLoop]: Abstraction has 55057 states and 75407 transitions. [2022-07-21 13:56:34,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 13:56:34,859 INFO L276 IsEmpty]: Start isEmpty. Operand 55057 states and 75407 transitions. [2022-07-21 13:56:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-21 13:56:34,864 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:34,865 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 6, 5, 5, 4, 4, 4, 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] [2022-07-21 13:56:34,896 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 13:56:35,072 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 13:56:35,073 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 13:56:35,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:35,073 INFO L85 PathProgramCache]: Analyzing trace with hash -240246355, now seen corresponding path program 1 times [2022-07-21 13:56:35,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:35,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857315966] [2022-07-21 13:56:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:35,076 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:35,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:35,077 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 13:56:35,079 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 13:56:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:36,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 1798 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:36,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:37,912 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 836 trivial. 0 not checked. [2022-07-21 13:56:37,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:38,716 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 836 trivial. 0 not checked. [2022-07-21 13:56:38,717 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:38,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857315966] [2022-07-21 13:56:38,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857315966] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:38,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:38,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:38,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670741418] [2022-07-21 13:56:38,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:38,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:38,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:38,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:38,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:38,719 INFO L87 Difference]: Start difference. First operand 55057 states and 75407 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 13:56:40,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:40,306 INFO L93 Difference]: Finished difference Result 55063 states and 75412 transitions. [2022-07-21 13:56:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:40,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 254 [2022-07-21 13:56:40,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:40,507 INFO L225 Difference]: With dead ends: 55063 [2022-07-21 13:56:40,508 INFO L226 Difference]: Without dead ends: 55061 [2022-07-21 13:56:40,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 501 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 13:56:40,539 INFO L413 NwaCegarLoop]: 2608 mSDtfsCounter, 2529 mSDsluCounter, 5196 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2536 SdHoareTripleChecker+Valid, 7804 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:40,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2536 Valid, 7804 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55061 states. [2022-07-21 13:56:42,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55061 to 55061. [2022-07-21 13:56:42,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55061 states, 37791 states have (on average 1.2669154031383134) internal successors, (47878), 38505 states have internal predecessors, (47878), 13675 states have call successors, (13675), 3661 states have call predecessors, (13675), 3592 states have return successors, (13857), 13392 states have call predecessors, (13857), 13671 states have call successors, (13857) [2022-07-21 13:56:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55061 states to 55061 states and 75410 transitions. [2022-07-21 13:56:42,389 INFO L78 Accepts]: Start accepts. Automaton has 55061 states and 75410 transitions. Word has length 254 [2022-07-21 13:56:42,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:42,390 INFO L495 AbstractCegarLoop]: Abstraction has 55061 states and 75410 transitions. [2022-07-21 13:56:42,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 13:56:42,390 INFO L276 IsEmpty]: Start isEmpty. Operand 55061 states and 75410 transitions. [2022-07-21 13:56:42,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-21 13:56:42,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:42,397 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 7, 6, 6, 4, 4, 4, 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] [2022-07-21 13:56:42,435 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 13:56:42,611 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 13:56:42,611 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 13:56:42,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:42,612 INFO L85 PathProgramCache]: Analyzing trace with hash 826017528, now seen corresponding path program 1 times [2022-07-21 13:56:42,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:42,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993550081] [2022-07-21 13:56:42,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:42,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:42,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:42,615 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 13:56:42,616 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 13:56:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:43,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1805 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:43,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2022-07-21 13:56:45,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 868 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 856 trivial. 0 not checked. [2022-07-21 13:56:46,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:46,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993550081] [2022-07-21 13:56:46,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993550081] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:46,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:46,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:46,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138126112] [2022-07-21 13:56:46,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:46,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:46,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:46,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:46,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:46,029 INFO L87 Difference]: Start difference. First operand 55061 states and 75410 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 13:56:47,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:47,764 INFO L93 Difference]: Finished difference Result 55067 states and 75415 transitions. [2022-07-21 13:56:47,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:47,765 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 259 [2022-07-21 13:56:47,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:47,946 INFO L225 Difference]: With dead ends: 55067 [2022-07-21 13:56:47,946 INFO L226 Difference]: Without dead ends: 55065 [2022-07-21 13:56:47,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 511 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 13:56:47,969 INFO L413 NwaCegarLoop]: 2608 mSDtfsCounter, 2529 mSDsluCounter, 5196 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2535 SdHoareTripleChecker+Valid, 7804 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:47,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2535 Valid, 7804 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:48,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55065 states. [2022-07-21 13:56:49,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55065 to 55065. [2022-07-21 13:56:49,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55065 states, 37794 states have (on average 1.2668942160131238) internal successors, (47881), 38508 states have internal predecessors, (47881), 13675 states have call successors, (13675), 3662 states have call predecessors, (13675), 3593 states have return successors, (13857), 13392 states have call predecessors, (13857), 13671 states have call successors, (13857) [2022-07-21 13:56:49,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55065 states to 55065 states and 75413 transitions. [2022-07-21 13:56:49,974 INFO L78 Accepts]: Start accepts. Automaton has 55065 states and 75413 transitions. Word has length 259 [2022-07-21 13:56:49,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:49,974 INFO L495 AbstractCegarLoop]: Abstraction has 55065 states and 75413 transitions. [2022-07-21 13:56:49,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 13:56:49,974 INFO L276 IsEmpty]: Start isEmpty. Operand 55065 states and 75413 transitions. [2022-07-21 13:56:49,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-21 13:56:49,980 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:49,981 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 8, 7, 7, 4, 4, 4, 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] [2022-07-21 13:56:50,014 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 13:56:50,195 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 13:56:50,195 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 13:56:50,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:50,196 INFO L85 PathProgramCache]: Analyzing trace with hash -408039347, now seen corresponding path program 1 times [2022-07-21 13:56:50,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:50,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505874076] [2022-07-21 13:56:50,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:50,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:50,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:50,198 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 13:56:50,200 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 13:56:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:51,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:51,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2022-07-21 13:56:52,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 894 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 880 trivial. 0 not checked. [2022-07-21 13:56:53,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:53,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505874076] [2022-07-21 13:56:53,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505874076] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:53,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:53,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:53,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647515297] [2022-07-21 13:56:53,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:53,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:53,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:53,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:53,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:53,798 INFO L87 Difference]: Start difference. First operand 55065 states and 75413 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 13:56:55,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:55,636 INFO L93 Difference]: Finished difference Result 62244 states and 83833 transitions. [2022-07-21 13:56:55,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:55,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 264 [2022-07-21 13:56:55,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:55,871 INFO L225 Difference]: With dead ends: 62244 [2022-07-21 13:56:55,872 INFO L226 Difference]: Without dead ends: 62242 [2022-07-21 13:56:55,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 521 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 13:56:55,908 INFO L413 NwaCegarLoop]: 2949 mSDtfsCounter, 2249 mSDsluCounter, 6625 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2254 SdHoareTripleChecker+Valid, 9574 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:55,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2254 Valid, 9574 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:55,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62242 states. [2022-07-21 13:56:57,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62242 to 62242. [2022-07-21 13:56:58,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62242 states, 42768 states have (on average 1.260545267489712) internal successors, (53911), 43530 states have internal predecessors, (53911), 14869 states have call successors, (14869), 4671 states have call predecessors, (14869), 4602 states have return successors, (15051), 14586 states have call predecessors, (15051), 14865 states have call successors, (15051) [2022-07-21 13:56:58,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62242 states to 62242 states and 83831 transitions. [2022-07-21 13:56:58,261 INFO L78 Accepts]: Start accepts. Automaton has 62242 states and 83831 transitions. Word has length 264 [2022-07-21 13:56:58,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:58,261 INFO L495 AbstractCegarLoop]: Abstraction has 62242 states and 83831 transitions. [2022-07-21 13:56:58,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 13:56:58,262 INFO L276 IsEmpty]: Start isEmpty. Operand 62242 states and 83831 transitions. [2022-07-21 13:56:58,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-07-21 13:56:58,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:58,269 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 12, 12, 9, 8, 8, 4, 4, 4, 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] [2022-07-21 13:56:58,293 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 13:56:58,469 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 13:56:58,470 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 13:56:58,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:58,470 INFO L85 PathProgramCache]: Analyzing trace with hash 521841624, now seen corresponding path program 1 times [2022-07-21 13:56:58,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:58,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126714715] [2022-07-21 13:56:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:58,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:58,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:58,473 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 13:56:58,474 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 13:56:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:59,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:59,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2022-07-21 13:57:01,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:57:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2022-07-21 13:57:02,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:02,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126714715] [2022-07-21 13:57:02,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126714715] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:57:02,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:57:02,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:57:02,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333108135] [2022-07-21 13:57:02,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:02,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:57:02,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:02,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:57:02,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:57:02,166 INFO L87 Difference]: Start difference. First operand 62242 states and 83831 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 13:57:03,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:03,874 INFO L93 Difference]: Finished difference Result 62248 states and 83836 transitions. [2022-07-21 13:57:03,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:57:03,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 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 269 [2022-07-21 13:57:03,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:04,100 INFO L225 Difference]: With dead ends: 62248 [2022-07-21 13:57:04,100 INFO L226 Difference]: Without dead ends: 62246 [2022-07-21 13:57:04,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 531 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 13:57:04,136 INFO L413 NwaCegarLoop]: 2608 mSDtfsCounter, 2529 mSDsluCounter, 5196 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 7804 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:04,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 7804 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:57:04,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62246 states.