./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-usb-smsc95xx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-usb-smsc95xx.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 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 15:21:34,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 15:21:34,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 15:21:34,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 15:21:34,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 15:21:34,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 15:21:34,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 15:21:34,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 15:21:34,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 15:21:34,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 15:21:34,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 15:21:34,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 15:21:34,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 15:21:34,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 15:21:34,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 15:21:34,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 15:21:34,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 15:21:34,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 15:21:34,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 15:21:34,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 15:21:34,701 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 15:21:34,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 15:21:34,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 15:21:34,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 15:21:34,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 15:21:34,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 15:21:34,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 15:21:34,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 15:21:34,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 15:21:34,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 15:21:34,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 15:21:34,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 15:21:34,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 15:21:34,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 15:21:34,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 15:21:34,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 15:21:34,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 15:21:34,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 15:21:34,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 15:21:34,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 15:21:34,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 15:21:34,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 15:21:34,719 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 15:21:34,737 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 15:21:34,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 15:21:34,744 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 15:21:34,744 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 15:21:34,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 15:21:34,745 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 15:21:34,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 15:21:34,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 15:21:34,746 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 15:21:34,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 15:21:34,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 15:21:34,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 15:21:34,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 15:21:34,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 15:21:34,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 15:21:34,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 15:21:34,748 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 15:21:34,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 15:21:34,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 15:21:34,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 15:21:34,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 15:21:34,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 15:21:34,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 15:21:34,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 15:21:34,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 15:21:34,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 15:21:34,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 15:21:34,765 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 15:21:34,765 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 15:21:34,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 15:21:34,765 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 [2022-07-12 15:21:34,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 15:21:34,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 15:21:34,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 15:21:34,965 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 15:21:34,965 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 15:21:34,966 INFO L432 ainManager$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-usb-smsc95xx.cil.i [2022-07-12 15:21:35,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ba23847/489aa6d342c246619786ba9352cb1dd3/FLAG5f5fe99ae [2022-07-12 15:21:35,671 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 15:21:35,672 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-usb-smsc95xx.cil.i [2022-07-12 15:21:35,713 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ba23847/489aa6d342c246619786ba9352cb1dd3/FLAG5f5fe99ae [2022-07-12 15:21:36,037 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ba23847/489aa6d342c246619786ba9352cb1dd3 [2022-07-12 15:21:36,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 15:21:36,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 15:21:36,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 15:21:36,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 15:21:36,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 15:21:36,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:21:36" (1/1) ... [2022-07-12 15:21:36,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2803b491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:21:36, skipping insertion in model container [2022-07-12 15:21:36,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:21:36" (1/1) ... [2022-07-12 15:21:36,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 15:21:36,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 15:21:38,301 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-usb-smsc95xx.cil.i[348095,348108] [2022-07-12 15:21:38,305 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-usb-smsc95xx.cil.i[348264,348277] [2022-07-12 15:21:38,306 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-usb-smsc95xx.cil.i[348431,348444] [2022-07-12 15:21:38,306 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-usb-smsc95xx.cil.i[348599,348612] [2022-07-12 15:21:38,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 15:21:38,399 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 15:21:38,475 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) 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:1845) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:314) 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) [2022-07-12 15:21:38,479 INFO L158 Benchmark]: Toolchain (without parser) took 2438.10ms. Allocated memory was 98.6MB in the beginning and 151.0MB in the end (delta: 52.4MB). Free memory was 58.0MB in the beginning and 66.3MB in the end (delta: -8.3MB). Peak memory consumption was 80.0MB. Max. memory is 16.1GB. [2022-07-12 15:21:38,480 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 71.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 15:21:38,480 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2435.05ms. Allocated memory was 98.6MB in the beginning and 151.0MB in the end (delta: 52.4MB). Free memory was 57.9MB in the beginning and 66.3MB in the end (delta: -8.4MB). Peak memory consumption was 80.0MB. Max. memory is 16.1GB. [2022-07-12 15:21:38,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 71.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2435.05ms. Allocated memory was 98.6MB in the beginning and 151.0MB in the end (delta: 52.4MB). Free memory was 57.9MB in the beginning and 66.3MB in the end (delta: -8.4MB). Peak memory consumption was 80.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) 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-usb-smsc95xx.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 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 15:21:40,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 15:21:40,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 15:21:40,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 15:21:40,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 15:21:40,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 15:21:40,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 15:21:40,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 15:21:40,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 15:21:40,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 15:21:40,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 15:21:40,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 15:21:40,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 15:21:40,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 15:21:40,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 15:21:40,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 15:21:40,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 15:21:40,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 15:21:40,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 15:21:40,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 15:21:40,048 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 15:21:40,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 15:21:40,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 15:21:40,050 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 15:21:40,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 15:21:40,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 15:21:40,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 15:21:40,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 15:21:40,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 15:21:40,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 15:21:40,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 15:21:40,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 15:21:40,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 15:21:40,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 15:21:40,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 15:21:40,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 15:21:40,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 15:21:40,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 15:21:40,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 15:21:40,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 15:21:40,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 15:21:40,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 15:21:40,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-12 15:21:40,088 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 15:21:40,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 15:21:40,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 15:21:40,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 15:21:40,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 15:21:40,090 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 15:21:40,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 15:21:40,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 15:21:40,091 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 15:21:40,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 15:21:40,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 15:21:40,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 15:21:40,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 15:21:40,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 15:21:40,093 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 15:21:40,093 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 15:21:40,093 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 15:21:40,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 15:21:40,093 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 15:21:40,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 15:21:40,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 15:21:40,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 15:21:40,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 15:21:40,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 15:21:40,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 15:21:40,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 15:21:40,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 15:21:40,095 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 15:21:40,095 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 15:21:40,095 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 15:21:40,095 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 15:21:40,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 15:21:40,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 15:21:40,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 [2022-07-12 15:21:40,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 15:21:40,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 15:21:40,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 15:21:40,389 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 15:21:40,389 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 15:21:40,391 INFO L432 ainManager$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-usb-smsc95xx.cil.i [2022-07-12 15:21:40,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f8b70c2/9c582d3ba4e442c886d7eb8a054611dc/FLAG495c4a25a [2022-07-12 15:21:41,116 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 15:21:41,117 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-usb-smsc95xx.cil.i [2022-07-12 15:21:41,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f8b70c2/9c582d3ba4e442c886d7eb8a054611dc/FLAG495c4a25a [2022-07-12 15:21:41,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f8b70c2/9c582d3ba4e442c886d7eb8a054611dc [2022-07-12 15:21:41,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 15:21:41,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 15:21:41,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 15:21:41,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 15:21:41,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 15:21:41,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:21:41" (1/1) ... [2022-07-12 15:21:41,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34654977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:21:41, skipping insertion in model container [2022-07-12 15:21:41,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:21:41" (1/1) ... [2022-07-12 15:21:41,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 15:21:41,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 15:21:43,853 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-usb-smsc95xx.cil.i[348095,348108] [2022-07-12 15:21:43,856 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-usb-smsc95xx.cil.i[348264,348277] [2022-07-12 15:21:43,859 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-usb-smsc95xx.cil.i[348431,348444] [2022-07-12 15:21:43,860 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-usb-smsc95xx.cil.i[348599,348612] [2022-07-12 15:21:43,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 15:21:43,931 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-12 15:21:44,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 15:21:44,234 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-usb-smsc95xx.cil.i[348095,348108] [2022-07-12 15:21:44,235 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-usb-smsc95xx.cil.i[348264,348277] [2022-07-12 15:21:44,235 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-usb-smsc95xx.cil.i[348431,348444] [2022-07-12 15:21:44,236 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-usb-smsc95xx.cil.i[348599,348612] [2022-07-12 15:21:44,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 15:21:44,258 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 15:21:44,515 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-usb-smsc95xx.cil.i[348095,348108] [2022-07-12 15:21:44,516 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-usb-smsc95xx.cil.i[348264,348277] [2022-07-12 15:21:44,516 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-usb-smsc95xx.cil.i[348431,348444] [2022-07-12 15:21:44,516 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-usb-smsc95xx.cil.i[348599,348612] [2022-07-12 15:21:44,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 15:21:44,719 INFO L208 MainTranslator]: Completed translation [2022-07-12 15:21:44,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:21:44 WrapperNode [2022-07-12 15:21:44,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 15:21:44,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 15:21:44,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 15:21:44,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 15:21:44,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:21:44" (1/1) ... [2022-07-12 15:21:44,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:21:44" (1/1) ... [2022-07-12 15:21:44,942 INFO L137 Inliner]: procedures = 406, calls = 2962, calls flagged for inlining = 179, calls inlined = 164, statements flattened = 5999 [2022-07-12 15:21:44,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 15:21:44,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 15:21:44,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 15:21:44,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 15:21:44,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:21:44" (1/1) ... [2022-07-12 15:21:44,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:21:44" (1/1) ... [2022-07-12 15:21:44,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:21:44" (1/1) ... [2022-07-12 15:21:44,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:21:44" (1/1) ... [2022-07-12 15:21:45,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:21:44" (1/1) ... [2022-07-12 15:21:45,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:21:44" (1/1) ... [2022-07-12 15:21:45,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:21:44" (1/1) ... [2022-07-12 15:21:45,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 15:21:45,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 15:21:45,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 15:21:45,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 15:21:45,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:21:44" (1/1) ... [2022-07-12 15:21:45,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 15:21:45,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 15:21:45,177 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) [2022-07-12 15:21:45,182 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 [2022-07-12 15:21:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-12 15:21:45,203 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-12 15:21:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_nway_reset [2022-07-12 15:21:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_nway_reset [2022-07-12 15:21:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_link_reset [2022-07-12 15:21:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_link_reset [2022-07-12 15:21:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 15:21:45,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 15:21:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure smsc_crc [2022-07-12 15:21:45,205 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc_crc [2022-07-12 15:21:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_ethtool_getregslen [2022-07-12 15:21:45,205 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_ethtool_getregslen [2022-07-12 15:21:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_mdio_write [2022-07-12 15:21:45,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_mdio_write [2022-07-12 15:21:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-12 15:21:45,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-12 15:21:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-07-12 15:21:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-07-12 15:21:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg_nopm [2022-07-12 15:21:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg_nopm [2022-07-12 15:21:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smsc95xx_driver_exit_6_2 [2022-07-12 15:21:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smsc95xx_driver_exit_6_2 [2022-07-12 15:21:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enable_phy_wakeup_interrupts [2022-07-12 15:21:45,206 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enable_phy_wakeup_interrupts [2022-07-12 15:21:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-12 15:21:45,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-07-12 15:21:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2022-07-12 15:21:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-12 15:21:45,207 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-12 15:21:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-12 15:21:45,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-12 15:21:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 15:21:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-12 15:21:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 15:21:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-12 15:21:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-12 15:21:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg [2022-07-12 15:21:45,208 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg [2022-07-12 15:21:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_rx_csum_offload [2022-07-12 15:21:45,208 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_rx_csum_offload [2022-07-12 15:21:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_reg_nopm [2022-07-12 15:21:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_reg_nopm [2022-07-12 15:21:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2022-07-12 15:21:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2022-07-12 15:21:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-07-12 15:21:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-07-12 15:21:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2022-07-12 15:21:45,209 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2022-07-12 15:21:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-07-12 15:21:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-07-12 15:21:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_write_nopm [2022-07-12 15:21:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_write_nopm [2022-07-12 15:21:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 15:21:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 15:21:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_ethtool_get_eeprom_len [2022-07-12 15:21:45,210 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_ethtool_get_eeprom_len [2022-07-12 15:21:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2022-07-12 15:21:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-07-12 15:21:45,211 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-07-12 15:21:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2022-07-12 15:21:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-12 15:21:45,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-12 15:21:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 15:21:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-07-12 15:21:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-07-12 15:21:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-07-12 15:21:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-07-12 15:21:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 15:21:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-12 15:21:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-12 15:21:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-12 15:21:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-12 15:21:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 15:21:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-12 15:21:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-12 15:21:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_start_rx_path [2022-07-12 15:21:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_start_rx_path [2022-07-12 15:21:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-12 15:21:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2022-07-12 15:21:45,213 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2022-07-12 15:21:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_write_reg [2022-07-12 15:21:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_write_reg [2022-07-12 15:21:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_set_features [2022-07-12 15:21:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_set_features [2022-07-12 15:21:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-07-12 15:21:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-07-12 15:21:45,214 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_wait_eeprom [2022-07-12 15:21:45,214 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_wait_eeprom [2022-07-12 15:21:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-12 15:21:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 15:21:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 15:21:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_read_reg [2022-07-12 15:21:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_read_reg [2022-07-12 15:21:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-12 15:21:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-12 15:21:45,215 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-12 15:21:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-12 15:21:45,216 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-12 15:21:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-12 15:21:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-12 15:21:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 15:21:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-12 15:21:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 15:21:45,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 15:21:45,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 15:21:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-12 15:21:45,217 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-12 15:21:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-12 15:21:45,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-12 15:21:45,217 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_reset [2022-07-12 15:21:45,217 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_reset [2022-07-12 15:21:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2022-07-12 15:21:45,218 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2022-07-12 15:21:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mac_cr_lock_of_smsc95xx_priv [2022-07-12 15:21:45,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mac_cr_lock_of_smsc95xx_priv [2022-07-12 15:21:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_reg [2022-07-12 15:21:45,218 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_reg [2022-07-12 15:21:45,218 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-12 15:21:45,218 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-12 15:21:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 15:21:45,219 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 15:21:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_write [2022-07-12 15:21:45,219 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_write [2022-07-12 15:21:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 15:21:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-12 15:21:45,219 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-12 15:21:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 15:21:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enter_suspend1 [2022-07-12 15:21:45,220 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enter_suspend1 [2022-07-12 15:21:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enter_suspend2 [2022-07-12 15:21:45,220 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enter_suspend2 [2022-07-12 15:21:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-12 15:21:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-12 15:21:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-12 15:21:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_eeprom [2022-07-12 15:21:45,221 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_eeprom [2022-07-12 15:21:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-12 15:21:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_set_multicast [2022-07-12 15:21:45,221 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_set_multicast [2022-07-12 15:21:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 15:21:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_start_offset [2022-07-12 15:21:45,221 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_start_offset [2022-07-12 15:21:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-12 15:21:45,222 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-12 15:21:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-12 15:21:45,222 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-12 15:21:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-12 15:21:45,222 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-12 15:21:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-07-12 15:21:45,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-07-12 15:21:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-12 15:21:45,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-12 15:21:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_read [2022-07-12 15:21:45,223 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_read [2022-07-12 15:21:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_phy_wait_not_busy [2022-07-12 15:21:45,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_phy_wait_not_busy [2022-07-12 15:21:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-07-12 15:21:45,223 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-07-12 15:21:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_2_4 [2022-07-12 15:21:45,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_2_4 [2022-07-12 15:21:45,224 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg_async [2022-07-12 15:21:45,224 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg_async [2022-07-12 15:21:45,224 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-12 15:21:45,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-12 15:21:45,224 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 15:21:45,224 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 15:21:45,224 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_read_nopm [2022-07-12 15:21:45,224 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_read_nopm [2022-07-12 15:21:45,225 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_resume [2022-07-12 15:21:45,225 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_resume [2022-07-12 15:21:45,225 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-12 15:21:45,225 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-12 15:21:45,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-12 15:21:45,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-12 15:21:45,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-12 15:21:45,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-12 15:21:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 15:21:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 15:21:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2022-07-12 15:21:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~X~~u16~0~X~$Pointer$~X~~u16~0~TO~C_INT [2022-07-12 15:21:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u8~0~X~~u8~0~X~~u16~0~X~~u16~0~X~$Pointer$~X~~u16~0~TO~C_INT [2022-07-12 15:21:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_mdio_read [2022-07-12 15:21:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_mdio_read [2022-07-12 15:21:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_eeprom_confirm_not_busy [2022-07-12 15:21:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_eeprom_confirm_not_busy [2022-07-12 15:21:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-07-12 15:21:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-07-12 15:21:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-07-12 15:21:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-07-12 15:21:45,859 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 15:21:45,862 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 15:21:46,072 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 15:22:41,296 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-07-12 15:22:41,326 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 15:22:41,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 15:22:41,339 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 15:22:41,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:22:41 BoogieIcfgContainer [2022-07-12 15:22:41,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 15:22:41,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 15:22:41,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 15:22:41,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 15:22:41,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:21:41" (1/3) ... [2022-07-12 15:22:41,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719aa1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:22:41, skipping insertion in model container [2022-07-12 15:22:41,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:21:44" (2/3) ... [2022-07-12 15:22:41,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719aa1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:22:41, skipping insertion in model container [2022-07-12 15:22:41,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:22:41" (3/3) ... [2022-07-12 15:22:41,348 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2022-07-12 15:22:41,358 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 15:22:41,358 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-12 15:22:41,418 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 15:22:41,422 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@76b8f8f5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b2fa204 [2022-07-12 15:22:41,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 15:22:41,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 1697 states, 1232 states have (on average 1.3465909090909092) internal successors, (1659), 1238 states have internal predecessors, (1659), 386 states have call successors, (386), 77 states have call predecessors, (386), 76 states have return successors, (379), 379 states have call predecessors, (379), 379 states have call successors, (379) [2022-07-12 15:22:41,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-12 15:22:41,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:22:41,452 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:22:41,452 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)] === [2022-07-12 15:22:41,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:22:41,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2048722027, now seen corresponding path program 1 times [2022-07-12 15:22:41,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:22:41,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020628987] [2022-07-12 15:22:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:22:41,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:22:41,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:22:41,481 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) [2022-07-12 15:22:41,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 15:22:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:22:42,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 15:22:42,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:22:43,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2022-07-12 15:22:43,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 15:22:43,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:22:43,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020628987] [2022-07-12 15:22:43,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020628987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 15:22:43,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 15:22:43,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 15:22:43,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733809119] [2022-07-12 15:22:43,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:22:43,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 15:22:43,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:22:43,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 15:22:43,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:22:43,078 INFO L87 Difference]: Start difference. First operand has 1697 states, 1232 states have (on average 1.3465909090909092) internal successors, (1659), 1238 states have internal predecessors, (1659), 386 states have call successors, (386), 77 states have call predecessors, (386), 76 states have return successors, (379), 379 states have call predecessors, (379), 379 states have call successors, (379) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 15:22:43,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:22:43,630 INFO L93 Difference]: Finished difference Result 4903 states and 7330 transitions. [2022-07-12 15:22:43,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 15:22:43,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 228 [2022-07-12 15:22:43,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:22:43,665 INFO L225 Difference]: With dead ends: 4903 [2022-07-12 15:22:43,666 INFO L226 Difference]: Without dead ends: 3236 [2022-07-12 15:22:43,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:22:43,686 INFO L413 NwaCegarLoop]: 2745 mSDtfsCounter, 2235 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2235 SdHoareTripleChecker+Valid, 5092 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 15:22:43,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2235 Valid, 5092 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 15:22:43,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2022-07-12 15:22:43,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 3232. [2022-07-12 15:22:43,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3232 states, 2375 states have (on average 1.3406315789473684) internal successors, (3184), 2386 states have internal predecessors, (3184), 706 states have call successors, (706), 149 states have call predecessors, (706), 148 states have return successors, (702), 702 states have call predecessors, (702), 702 states have call successors, (702) [2022-07-12 15:22:43,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 4592 transitions. [2022-07-12 15:22:43,883 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 4592 transitions. Word has length 228 [2022-07-12 15:22:43,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:22:43,885 INFO L495 AbstractCegarLoop]: Abstraction has 3232 states and 4592 transitions. [2022-07-12 15:22:43,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 15:22:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 4592 transitions. [2022-07-12 15:22:43,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-07-12 15:22:43,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:22:43,894 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:22:43,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 15:22:44,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:22:44,112 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)] === [2022-07-12 15:22:44,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:22:44,112 INFO L85 PathProgramCache]: Analyzing trace with hash 775454786, now seen corresponding path program 1 times [2022-07-12 15:22:44,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:22:44,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25392694] [2022-07-12 15:22:44,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:22:44,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:22:44,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:22:44,116 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) [2022-07-12 15:22:44,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 15:22:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:22:45,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 15:22:45,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:22:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2022-07-12 15:22:45,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 15:22:45,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:22:45,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25392694] [2022-07-12 15:22:45,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25392694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 15:22:45,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 15:22:45,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 15:22:45,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238279629] [2022-07-12 15:22:45,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:22:45,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 15:22:45,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:22:45,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 15:22:45,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:22:45,414 INFO L87 Difference]: Start difference. First operand 3232 states and 4592 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 15:22:46,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:22:46,040 INFO L93 Difference]: Finished difference Result 7614 states and 10818 transitions. [2022-07-12 15:22:46,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 15:22:46,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 243 [2022-07-12 15:22:46,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:22:46,060 INFO L225 Difference]: With dead ends: 7614 [2022-07-12 15:22:46,060 INFO L226 Difference]: Without dead ends: 4423 [2022-07-12 15:22:46,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:22:46,071 INFO L413 NwaCegarLoop]: 2821 mSDtfsCounter, 1987 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 5121 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 15:22:46,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 5121 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 15:22:46,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4423 states. [2022-07-12 15:22:46,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4423 to 4396. [2022-07-12 15:22:46,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 3187 states have (on average 1.3410731095073738) internal successors, (4274), 3206 states have internal predecessors, (4274), 985 states have call successors, (985), 222 states have call predecessors, (985), 221 states have return successors, (981), 976 states have call predecessors, (981), 981 states have call successors, (981) [2022-07-12 15:22:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 6240 transitions. [2022-07-12 15:22:46,197 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 6240 transitions. Word has length 243 [2022-07-12 15:22:46,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:22:46,198 INFO L495 AbstractCegarLoop]: Abstraction has 4396 states and 6240 transitions. [2022-07-12 15:22:46,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-12 15:22:46,198 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 6240 transitions. [2022-07-12 15:22:46,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-07-12 15:22:46,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:22:46,204 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 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] [2022-07-12 15:22:46,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 15:22:46,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:22:46,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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)] === [2022-07-12 15:22:46,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:22:46,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1690325682, now seen corresponding path program 1 times [2022-07-12 15:22:46,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:22:46,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675182223] [2022-07-12 15:22:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:22:46,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:22:46,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:22:46,432 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) [2022-07-12 15:22:46,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 15:22:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:22:47,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 2047 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 15:22:47,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:22:47,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-07-12 15:22:47,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 15:22:47,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:22:47,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675182223] [2022-07-12 15:22:47,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675182223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 15:22:47,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 15:22:47,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 15:22:47,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034192101] [2022-07-12 15:22:47,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:22:47,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 15:22:47,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:22:47,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 15:22:47,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:22:47,857 INFO L87 Difference]: Start difference. First operand 4396 states and 6240 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, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-12 15:22:48,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:22:48,243 INFO L93 Difference]: Finished difference Result 10317 states and 14649 transitions. [2022-07-12 15:22:48,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 15:22:48,246 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, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 287 [2022-07-12 15:22:48,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:22:48,288 INFO L225 Difference]: With dead ends: 10317 [2022-07-12 15:22:48,288 INFO L226 Difference]: Without dead ends: 7274 [2022-07-12 15:22:48,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:22:48,308 INFO L413 NwaCegarLoop]: 4584 mSDtfsCounter, 2196 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 6939 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 15:22:48,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2196 Valid, 6939 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 15:22:48,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2022-07-12 15:22:48,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7270. [2022-07-12 15:22:48,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7270 states, 5297 states have (on average 1.3430243534075892) internal successors, (7114), 5322 states have internal predecessors, (7114), 1605 states have call successors, (1605), 366 states have call predecessors, (1605), 365 states have return successors, (1601), 1596 states have call predecessors, (1601), 1601 states have call successors, (1601) [2022-07-12 15:22:48,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 10320 transitions. [2022-07-12 15:22:48,595 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 10320 transitions. Word has length 287 [2022-07-12 15:22:48,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:22:48,596 INFO L495 AbstractCegarLoop]: Abstraction has 7270 states and 10320 transitions. [2022-07-12 15:22:48,598 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, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-12 15:22:48,598 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 10320 transitions. [2022-07-12 15:22:48,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-07-12 15:22:48,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:22:48,605 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 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] [2022-07-12 15:22:48,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 15:22:48,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:22:48,821 INFO L420 AbstractCegarLoop]: === Iteration 4 === 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)] === [2022-07-12 15:22:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:22:48,822 INFO L85 PathProgramCache]: Analyzing trace with hash -681413580, now seen corresponding path program 1 times [2022-07-12 15:22:48,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:22:48,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833754531] [2022-07-12 15:22:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:22:48,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:22:48,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:22:48,827 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) [2022-07-12 15:22:48,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 15:22:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:22:50,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 2047 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 15:22:50,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:22:51,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2022-07-12 15:22:51,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 15:22:51,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:22:51,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833754531] [2022-07-12 15:22:51,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833754531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 15:22:51,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 15:22:51,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 15:22:51,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043870080] [2022-07-12 15:22:51,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:22:51,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 15:22:51,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:22:51,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 15:22:51,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 15:22:51,808 INFO L87 Difference]: Start difference. First operand 7270 states and 10320 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-12 15:22:52,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:22:52,076 INFO L93 Difference]: Finished difference Result 7276 states and 10325 transitions. [2022-07-12 15:22:52,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 15:22:52,076 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 287 [2022-07-12 15:22:52,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:22:52,109 INFO L225 Difference]: With dead ends: 7276 [2022-07-12 15:22:52,109 INFO L226 Difference]: Without dead ends: 7274 [2022-07-12 15:22:52,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 15:22:52,116 INFO L413 NwaCegarLoop]: 2385 mSDtfsCounter, 2277 mSDsluCounter, 4758 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 7143 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 15:22:52,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 7143 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 15:22:52,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2022-07-12 15:22:52,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7274. [2022-07-12 15:22:52,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7274 states, 5300 states have (on average 1.3428301886792453) internal successors, (7117), 5325 states have internal predecessors, (7117), 1605 states have call successors, (1605), 367 states have call predecessors, (1605), 366 states have return successors, (1601), 1596 states have call predecessors, (1601), 1601 states have call successors, (1601) [2022-07-12 15:22:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7274 states to 7274 states and 10323 transitions. [2022-07-12 15:22:52,339 INFO L78 Accepts]: Start accepts. Automaton has 7274 states and 10323 transitions. Word has length 287 [2022-07-12 15:22:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:22:52,342 INFO L495 AbstractCegarLoop]: Abstraction has 7274 states and 10323 transitions. [2022-07-12 15:22:52,343 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, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-12 15:22:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand 7274 states and 10323 transitions. [2022-07-12 15:22:52,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-12 15:22:52,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:22:52,349 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:22:52,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-12 15:22:52,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:22:52,563 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)] === [2022-07-12 15:22:52,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:22:52,564 INFO L85 PathProgramCache]: Analyzing trace with hash -2099691453, now seen corresponding path program 1 times [2022-07-12 15:22:52,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:22:52,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035352540] [2022-07-12 15:22:52,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:22:52,565 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:22:52,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:22:52,567 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) [2022-07-12 15:22:52,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 15:22:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:22:53,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 2054 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 15:22:53,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:22:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2022-07-12 15:22:55,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 15:22:56,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2022-07-12 15:22:56,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:22:56,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035352540] [2022-07-12 15:22:56,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035352540] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 15:22:56,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 15:22:56,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-12 15:22:56,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174559531] [2022-07-12 15:22:56,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:22:56,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 15:22:56,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:22:56,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 15:22:56,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 15:22:56,139 INFO L87 Difference]: Start difference. First operand 7274 states and 10323 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) [2022-07-12 15:22:56,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:22:56,433 INFO L93 Difference]: Finished difference Result 7280 states and 10328 transitions. [2022-07-12 15:22:56,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 15:22:56,433 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 292 [2022-07-12 15:22:56,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:22:56,487 INFO L225 Difference]: With dead ends: 7280 [2022-07-12 15:22:56,487 INFO L226 Difference]: Without dead ends: 7278 [2022-07-12 15:22:56,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-12 15:22:56,495 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 15:22:56,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 15:22:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7278 states. [2022-07-12 15:22:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7278 to 7278. [2022-07-12 15:22:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7278 states, 5303 states have (on average 1.342636243635678) internal successors, (7120), 5328 states have internal predecessors, (7120), 1605 states have call successors, (1605), 368 states have call predecessors, (1605), 367 states have return successors, (1601), 1596 states have call predecessors, (1601), 1601 states have call successors, (1601) [2022-07-12 15:22:56,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7278 states to 7278 states and 10326 transitions. [2022-07-12 15:22:56,782 INFO L78 Accepts]: Start accepts. Automaton has 7278 states and 10326 transitions. Word has length 292 [2022-07-12 15:22:56,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:22:56,782 INFO L495 AbstractCegarLoop]: Abstraction has 7278 states and 10326 transitions. [2022-07-12 15:22:56,783 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) [2022-07-12 15:22:56,783 INFO L276 IsEmpty]: Start isEmpty. Operand 7278 states and 10326 transitions. [2022-07-12 15:22:56,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-07-12 15:22:56,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:22:56,791 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:22:56,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-12 15:22:56,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:22:57,000 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)] === [2022-07-12 15:22:57,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:22:57,000 INFO L85 PathProgramCache]: Analyzing trace with hash 705078606, now seen corresponding path program 1 times [2022-07-12 15:22:57,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:22:57,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069538386] [2022-07-12 15:22:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:22:57,002 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:22:57,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:22:57,003 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) [2022-07-12 15:22:57,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-12 15:22:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:22:58,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 2103 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 15:22:58,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:22:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1664 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2022-07-12 15:22:58,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 15:22:58,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:22:58,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069538386] [2022-07-12 15:22:58,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069538386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 15:22:58,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 15:22:58,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 15:22:58,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326378114] [2022-07-12 15:22:58,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:22:58,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 15:22:58,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:22:58,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 15:22:58,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:22:58,303 INFO L87 Difference]: Start difference. First operand 7278 states and 10326 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-12 15:22:58,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:22:58,836 INFO L93 Difference]: Finished difference Result 16109 states and 22859 transitions. [2022-07-12 15:22:58,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 15:22:58,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 306 [2022-07-12 15:22:58,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:22:58,872 INFO L225 Difference]: With dead ends: 16109 [2022-07-12 15:22:58,873 INFO L226 Difference]: Without dead ends: 10184 [2022-07-12 15:22:58,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:22:58,895 INFO L413 NwaCegarLoop]: 4596 mSDtfsCounter, 2229 mSDsluCounter, 2357 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2229 SdHoareTripleChecker+Valid, 6953 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 15:22:58,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2229 Valid, 6953 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 15:22:58,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10184 states. [2022-07-12 15:22:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10184 to 10154. [2022-07-12 15:22:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10154 states, 7415 states have (on average 1.3434929197572487) internal successors, (9962), 7446 states have internal predecessors, (9962), 2225 states have call successors, (2225), 512 states have call predecessors, (2225), 511 states have return successors, (2221), 2216 states have call predecessors, (2221), 2221 states have call successors, (2221) [2022-07-12 15:22:59,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10154 states to 10154 states and 14408 transitions. [2022-07-12 15:22:59,235 INFO L78 Accepts]: Start accepts. Automaton has 10154 states and 14408 transitions. Word has length 306 [2022-07-12 15:22:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:22:59,237 INFO L495 AbstractCegarLoop]: Abstraction has 10154 states and 14408 transitions. [2022-07-12 15:22:59,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-12 15:22:59,237 INFO L276 IsEmpty]: Start isEmpty. Operand 10154 states and 14408 transitions. [2022-07-12 15:22:59,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-07-12 15:22:59,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:22:59,243 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:22:59,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-12 15:22:59,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:22:59,463 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)] === [2022-07-12 15:22:59,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:22:59,464 INFO L85 PathProgramCache]: Analyzing trace with hash -948454060, now seen corresponding path program 1 times [2022-07-12 15:22:59,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:22:59,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482993550] [2022-07-12 15:22:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:22:59,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:22:59,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:22:59,467 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) [2022-07-12 15:22:59,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-12 15:23:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:23:00,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 2061 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 15:23:00,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:23:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2022-07-12 15:23:02,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 15:23:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2022-07-12 15:23:03,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:23:03,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482993550] [2022-07-12 15:23:03,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482993550] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 15:23:03,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 15:23:03,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-12 15:23:03,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916865061] [2022-07-12 15:23:03,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:23:03,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 15:23:03,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:23:03,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 15:23:03,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 15:23:03,005 INFO L87 Difference]: Start difference. First operand 10154 states and 14408 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) [2022-07-12 15:23:03,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:23:03,448 INFO L93 Difference]: Finished difference Result 10160 states and 14413 transitions. [2022-07-12 15:23:03,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 15:23:03,449 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 297 [2022-07-12 15:23:03,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:23:03,491 INFO L225 Difference]: With dead ends: 10160 [2022-07-12 15:23:03,491 INFO L226 Difference]: Without dead ends: 10158 [2022-07-12 15:23:03,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-12 15:23:03,499 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 15:23:03,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2313 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 15:23:03,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10158 states. [2022-07-12 15:23:03,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10158 to 10158. [2022-07-12 15:23:03,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10158 states, 7418 states have (on average 1.3433540037746023) internal successors, (9965), 7449 states have internal predecessors, (9965), 2225 states have call successors, (2225), 513 states have call predecessors, (2225), 512 states have return successors, (2221), 2216 states have call predecessors, (2221), 2221 states have call successors, (2221) [2022-07-12 15:23:03,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10158 states to 10158 states and 14411 transitions. [2022-07-12 15:23:03,854 INFO L78 Accepts]: Start accepts. Automaton has 10158 states and 14411 transitions. Word has length 297 [2022-07-12 15:23:03,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:23:03,854 INFO L495 AbstractCegarLoop]: Abstraction has 10158 states and 14411 transitions. [2022-07-12 15:23:03,854 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, (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) [2022-07-12 15:23:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand 10158 states and 14411 transitions. [2022-07-12 15:23:03,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-07-12 15:23:03,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:23:03,861 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:23:03,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-12 15:23:04,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:23:04,087 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)] === [2022-07-12 15:23:04,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:23:04,088 INFO L85 PathProgramCache]: Analyzing trace with hash 545184419, now seen corresponding path program 1 times [2022-07-12 15:23:04,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:23:04,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219732534] [2022-07-12 15:23:04,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:23:04,089 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:23:04,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:23:04,090 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) [2022-07-12 15:23:04,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-12 15:23:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:23:05,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 2068 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 15:23:05,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:23:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1665 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1659 trivial. 0 not checked. [2022-07-12 15:23:06,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 15:23:07,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1665 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1659 trivial. 0 not checked. [2022-07-12 15:23:07,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:23:07,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219732534] [2022-07-12 15:23:07,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219732534] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 15:23:07,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 15:23:07,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-12 15:23:07,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850122177] [2022-07-12 15:23:07,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:23:07,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 15:23:07,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:23:07,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 15:23:07,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 15:23:07,645 INFO L87 Difference]: Start difference. First operand 10158 states and 14411 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-12 15:23:07,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:23:07,989 INFO L93 Difference]: Finished difference Result 10164 states and 14416 transitions. [2022-07-12 15:23:07,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 15:23:07,989 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 302 [2022-07-12 15:23:07,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:23:08,026 INFO L225 Difference]: With dead ends: 10164 [2022-07-12 15:23:08,027 INFO L226 Difference]: Without dead ends: 10162 [2022-07-12 15:23:08,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-12 15:23:08,033 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2312 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 15:23:08,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2312 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 15:23:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10162 states. [2022-07-12 15:23:08,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10162 to 10162. [2022-07-12 15:23:08,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10162 states, 7421 states have (on average 1.3432152001078022) internal successors, (9968), 7452 states have internal predecessors, (9968), 2225 states have call successors, (2225), 514 states have call predecessors, (2225), 513 states have return successors, (2221), 2216 states have call predecessors, (2221), 2221 states have call successors, (2221) [2022-07-12 15:23:08,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10162 states to 10162 states and 14414 transitions. [2022-07-12 15:23:08,379 INFO L78 Accepts]: Start accepts. Automaton has 10162 states and 14414 transitions. Word has length 302 [2022-07-12 15:23:08,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:23:08,380 INFO L495 AbstractCegarLoop]: Abstraction has 10162 states and 14414 transitions. [2022-07-12 15:23:08,380 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, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-12 15:23:08,380 INFO L276 IsEmpty]: Start isEmpty. Operand 10162 states and 14414 transitions. [2022-07-12 15:23:08,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-07-12 15:23:08,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:23:08,387 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:23:08,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-12 15:23:08,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:23:08,604 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)] === [2022-07-12 15:23:08,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:23:08,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1464716916, now seen corresponding path program 1 times [2022-07-12 15:23:08,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:23:08,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19959248] [2022-07-12 15:23:08,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:23:08,605 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:23:08,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:23:08,606 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) [2022-07-12 15:23:08,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-12 15:23:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:23:09,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 2075 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 15:23:09,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:23:11,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1671 trivial. 0 not checked. [2022-07-12 15:23:11,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 15:23:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1671 trivial. 0 not checked. [2022-07-12 15:23:12,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:23:12,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19959248] [2022-07-12 15:23:12,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19959248] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 15:23:12,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 15:23:12,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-12 15:23:12,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139798393] [2022-07-12 15:23:12,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:23:12,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 15:23:12,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:23:12,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 15:23:12,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 15:23:12,253 INFO L87 Difference]: Start difference. First operand 10162 states and 14414 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, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-12 15:23:12,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:23:12,668 INFO L93 Difference]: Finished difference Result 10168 states and 14419 transitions. [2022-07-12 15:23:12,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 15:23:12,669 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, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 307 [2022-07-12 15:23:12,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:23:12,707 INFO L225 Difference]: With dead ends: 10168 [2022-07-12 15:23:12,708 INFO L226 Difference]: Without dead ends: 10166 [2022-07-12 15:23:12,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-12 15:23:12,715 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 15:23:12,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2311 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 15:23:12,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10166 states. [2022-07-12 15:23:13,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10166 to 10166. [2022-07-12 15:23:13,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10166 states, 7424 states have (on average 1.3430765086206897) internal successors, (9971), 7455 states have internal predecessors, (9971), 2225 states have call successors, (2225), 515 states have call predecessors, (2225), 514 states have return successors, (2221), 2216 states have call predecessors, (2221), 2221 states have call successors, (2221) [2022-07-12 15:23:13,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10166 states to 10166 states and 14417 transitions. [2022-07-12 15:23:13,054 INFO L78 Accepts]: Start accepts. Automaton has 10166 states and 14417 transitions. Word has length 307 [2022-07-12 15:23:13,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:23:13,055 INFO L495 AbstractCegarLoop]: Abstraction has 10166 states and 14417 transitions. [2022-07-12 15:23:13,055 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, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-12 15:23:13,055 INFO L276 IsEmpty]: Start isEmpty. Operand 10166 states and 14417 transitions. [2022-07-12 15:23:13,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-07-12 15:23:13,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:23:13,062 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:23:13,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-12 15:23:13,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:23:13,277 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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)] === [2022-07-12 15:23:13,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:23:13,277 INFO L85 PathProgramCache]: Analyzing trace with hash 381872330, now seen corresponding path program 1 times [2022-07-12 15:23:13,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:23:13,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131921028] [2022-07-12 15:23:13,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:23:13,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:23:13,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:23:13,280 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) [2022-07-12 15:23:13,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-12 15:23:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:23:15,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 3041 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 15:23:15,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:23:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1623 trivial. 0 not checked. [2022-07-12 15:23:15,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 15:23:15,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:23:15,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131921028] [2022-07-12 15:23:15,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131921028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 15:23:15,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 15:23:15,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 15:23:15,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973001863] [2022-07-12 15:23:15,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:23:15,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 15:23:15,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:23:15,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 15:23:15,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:23:15,200 INFO L87 Difference]: Start difference. First operand 10166 states and 14417 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-07-12 15:23:15,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:23:15,901 INFO L93 Difference]: Finished difference Result 27356 states and 38760 transitions. [2022-07-12 15:23:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 15:23:15,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 441 [2022-07-12 15:23:15,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:23:15,961 INFO L225 Difference]: With dead ends: 27356 [2022-07-12 15:23:15,961 INFO L226 Difference]: Without dead ends: 17231 [2022-07-12 15:23:15,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:23:15,993 INFO L413 NwaCegarLoop]: 2781 mSDtfsCounter, 1698 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 15:23:15,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1698 Valid, 5128 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 15:23:16,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17231 states. [2022-07-12 15:23:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17231 to 17172. [2022-07-12 15:23:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17172 states, 12644 states have (on average 1.341901297057893) internal successors, (16967), 12711 states have internal predecessors, (16967), 3650 states have call successors, (3650), 876 states have call predecessors, (3650), 875 states have return successors, (3646), 3619 states have call predecessors, (3646), 3646 states have call successors, (3646) [2022-07-12 15:23:16,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17172 states to 17172 states and 24263 transitions. [2022-07-12 15:23:16,583 INFO L78 Accepts]: Start accepts. Automaton has 17172 states and 24263 transitions. Word has length 441 [2022-07-12 15:23:16,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:23:16,584 INFO L495 AbstractCegarLoop]: Abstraction has 17172 states and 24263 transitions. [2022-07-12 15:23:16,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-07-12 15:23:16,584 INFO L276 IsEmpty]: Start isEmpty. Operand 17172 states and 24263 transitions. [2022-07-12 15:23:16,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2022-07-12 15:23:16,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:23:16,592 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:23:16,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-12 15:23:16,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:23:16,804 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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)] === [2022-07-12 15:23:16,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:23:16,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1342567629, now seen corresponding path program 1 times [2022-07-12 15:23:16,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:23:16,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636891687] [2022-07-12 15:23:16,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:23:16,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:23:16,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:23:16,808 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) [2022-07-12 15:23:16,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-12 15:23:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:23:18,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 3014 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 15:23:18,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:23:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1623 trivial. 0 not checked. [2022-07-12 15:23:18,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 15:23:18,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:23:18,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636891687] [2022-07-12 15:23:18,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636891687] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 15:23:18,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 15:23:18,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 15:23:18,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319927207] [2022-07-12 15:23:18,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:23:18,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 15:23:18,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:23:18,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 15:23:18,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:23:18,870 INFO L87 Difference]: Start difference. First operand 17172 states and 24263 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-07-12 15:23:19,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:23:19,666 INFO L93 Difference]: Finished difference Result 42119 states and 59393 transitions. [2022-07-12 15:23:19,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 15:23:19,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 435 [2022-07-12 15:23:19,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:23:19,763 INFO L225 Difference]: With dead ends: 42119 [2022-07-12 15:23:19,763 INFO L226 Difference]: Without dead ends: 24988 [2022-07-12 15:23:19,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:23:19,810 INFO L413 NwaCegarLoop]: 2790 mSDtfsCounter, 1936 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 5138 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 15:23:19,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1936 Valid, 5138 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 15:23:19,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24988 states. [2022-07-12 15:23:20,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24988 to 24935. [2022-07-12 15:23:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24935 states, 18352 states have (on average 1.3359306887532694) internal successors, (24517), 18457 states have internal predecessors, (24517), 5275 states have call successors, (5275), 1306 states have call predecessors, (5275), 1305 states have return successors, (5271), 5208 states have call predecessors, (5271), 5271 states have call successors, (5271) [2022-07-12 15:23:20,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24935 states to 24935 states and 35063 transitions. [2022-07-12 15:23:20,931 INFO L78 Accepts]: Start accepts. Automaton has 24935 states and 35063 transitions. Word has length 435 [2022-07-12 15:23:20,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:23:20,931 INFO L495 AbstractCegarLoop]: Abstraction has 24935 states and 35063 transitions. [2022-07-12 15:23:20,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-07-12 15:23:20,932 INFO L276 IsEmpty]: Start isEmpty. Operand 24935 states and 35063 transitions. [2022-07-12 15:23:20,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-07-12 15:23:20,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:23:20,936 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:23:20,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-12 15:23:21,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:23:21,163 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)] === [2022-07-12 15:23:21,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:23:21,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1067494659, now seen corresponding path program 1 times [2022-07-12 15:23:21,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:23:21,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36744528] [2022-07-12 15:23:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:23:21,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:23:21,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:23:21,167 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) [2022-07-12 15:23:21,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-12 15:23:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:23:22,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 2082 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 15:23:22,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:23:24,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1697 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1687 trivial. 0 not checked. [2022-07-12 15:23:24,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 15:23:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1697 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1687 trivial. 0 not checked. [2022-07-12 15:23:24,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:23:24,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36744528] [2022-07-12 15:23:24,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36744528] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 15:23:24,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 15:23:24,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-12 15:23:24,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687020902] [2022-07-12 15:23:24,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:23:24,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 15:23:24,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:23:24,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 15:23:24,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 15:23:24,821 INFO L87 Difference]: Start difference. First operand 24935 states and 35063 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, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-12 15:23:25,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:23:25,449 INFO L93 Difference]: Finished difference Result 24941 states and 35068 transitions. [2022-07-12 15:23:25,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 15:23:25,450 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, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 312 [2022-07-12 15:23:25,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:23:25,540 INFO L225 Difference]: With dead ends: 24941 [2022-07-12 15:23:25,540 INFO L226 Difference]: Without dead ends: 24939 [2022-07-12 15:23:25,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-12 15:23:25,557 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 15:23:25,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 15:23:25,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24939 states. [2022-07-12 15:23:26,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24939 to 24939. [2022-07-12 15:23:26,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24939 states, 18355 states have (on average 1.33587578316535) internal successors, (24520), 18460 states have internal predecessors, (24520), 5275 states have call successors, (5275), 1307 states have call predecessors, (5275), 1306 states have return successors, (5271), 5208 states have call predecessors, (5271), 5271 states have call successors, (5271) [2022-07-12 15:23:26,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24939 states to 24939 states and 35066 transitions. [2022-07-12 15:23:26,472 INFO L78 Accepts]: Start accepts. Automaton has 24939 states and 35066 transitions. Word has length 312 [2022-07-12 15:23:26,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:23:26,473 INFO L495 AbstractCegarLoop]: Abstraction has 24939 states and 35066 transitions. [2022-07-12 15:23:26,473 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, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-12 15:23:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 24939 states and 35066 transitions. [2022-07-12 15:23:26,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-07-12 15:23:26,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:23:26,478 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:23:26,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-12 15:23:26,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:23:26,696 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)] === [2022-07-12 15:23:26,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:23:26,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2104842348, now seen corresponding path program 1 times [2022-07-12 15:23:26,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:23:26,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824367222] [2022-07-12 15:23:26,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:23:26,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:23:26,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:23:26,699 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) [2022-07-12 15:23:26,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-12 15:23:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:23:27,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 15:23:27,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:23:29,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1707 trivial. 0 not checked. [2022-07-12 15:23:29,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 15:23:30,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1707 trivial. 0 not checked. [2022-07-12 15:23:30,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:23:30,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824367222] [2022-07-12 15:23:30,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824367222] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 15:23:30,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 15:23:30,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-12 15:23:30,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238635130] [2022-07-12 15:23:30,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:23:30,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 15:23:30,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:23:30,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 15:23:30,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 15:23:30,332 INFO L87 Difference]: Start difference. First operand 24939 states and 35066 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, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-12 15:23:31,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:23:31,127 INFO L93 Difference]: Finished difference Result 24945 states and 35071 transitions. [2022-07-12 15:23:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 15:23:31,128 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, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 317 [2022-07-12 15:23:31,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:23:31,201 INFO L225 Difference]: With dead ends: 24945 [2022-07-12 15:23:31,201 INFO L226 Difference]: Without dead ends: 24943 [2022-07-12 15:23:31,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-12 15:23:31,211 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 15:23:31,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2309 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 15:23:31,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24943 states. [2022-07-12 15:23:31,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24943 to 24943. [2022-07-12 15:23:31,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24943 states, 18358 states have (on average 1.335820895522388) internal successors, (24523), 18463 states have internal predecessors, (24523), 5275 states have call successors, (5275), 1308 states have call predecessors, (5275), 1307 states have return successors, (5271), 5208 states have call predecessors, (5271), 5271 states have call successors, (5271) [2022-07-12 15:23:32,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24943 states to 24943 states and 35069 transitions. [2022-07-12 15:23:32,029 INFO L78 Accepts]: Start accepts. Automaton has 24943 states and 35069 transitions. Word has length 317 [2022-07-12 15:23:32,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:23:32,029 INFO L495 AbstractCegarLoop]: Abstraction has 24943 states and 35069 transitions. [2022-07-12 15:23:32,030 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, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-12 15:23:32,030 INFO L276 IsEmpty]: Start isEmpty. Operand 24943 states and 35069 transitions. [2022-07-12 15:23:32,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-07-12 15:23:32,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:23:32,034 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:23:32,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-12 15:23:32,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:23:32,235 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)] === [2022-07-12 15:23:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:23:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1012447075, now seen corresponding path program 1 times [2022-07-12 15:23:32,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:23:32,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182261815] [2022-07-12 15:23:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:23:32,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:23:32,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:23:32,238 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) [2022-07-12 15:23:32,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-12 15:23:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:23:33,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 15:23:33,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:23:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1731 trivial. 0 not checked. [2022-07-12 15:23:35,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 15:23:35,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1731 trivial. 0 not checked. [2022-07-12 15:23:35,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:23:35,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182261815] [2022-07-12 15:23:35,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182261815] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 15:23:35,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 15:23:35,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-12 15:23:35,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050997878] [2022-07-12 15:23:35,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:23:35,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 15:23:35,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:23:35,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 15:23:35,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 15:23:35,857 INFO L87 Difference]: Start difference. First operand 24943 states and 35069 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, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-12 15:23:36,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:23:36,595 INFO L93 Difference]: Finished difference Result 25103 states and 35184 transitions. [2022-07-12 15:23:36,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 15:23:36,596 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, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 322 [2022-07-12 15:23:36,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:23:36,668 INFO L225 Difference]: With dead ends: 25103 [2022-07-12 15:23:36,669 INFO L226 Difference]: Without dead ends: 25101 [2022-07-12 15:23:36,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-12 15:23:36,679 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2221 mSDsluCounter, 4843 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 7231 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 15:23:36,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2225 Valid, 7231 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 15:23:36,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25101 states. [2022-07-12 15:23:37,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25101 to 25101. [2022-07-12 15:23:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25101 states, 18471 states have (on average 1.3337664446970927) internal successors, (24636), 18576 states have internal predecessors, (24636), 5275 states have call successors, (5275), 1353 states have call predecessors, (5275), 1352 states have return successors, (5271), 5208 states have call predecessors, (5271), 5271 states have call successors, (5271) [2022-07-12 15:23:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25101 states to 25101 states and 35182 transitions. [2022-07-12 15:23:37,605 INFO L78 Accepts]: Start accepts. Automaton has 25101 states and 35182 transitions. Word has length 322 [2022-07-12 15:23:37,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:23:37,606 INFO L495 AbstractCegarLoop]: Abstraction has 25101 states and 35182 transitions. [2022-07-12 15:23:37,606 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, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-12 15:23:37,606 INFO L276 IsEmpty]: Start isEmpty. Operand 25101 states and 35182 transitions. [2022-07-12 15:23:37,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-07-12 15:23:37,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:23:37,612 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:23:37,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-12 15:23:37,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:23:37,824 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)] === [2022-07-12 15:23:37,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:23:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1834240180, now seen corresponding path program 1 times [2022-07-12 15:23:37,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:23:37,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992900871] [2022-07-12 15:23:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:23:37,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:23:37,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:23:37,827 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) [2022-07-12 15:23:37,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-12 15:23:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:23:39,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 2103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 15:23:39,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:23:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1775 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2022-07-12 15:23:40,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 15:23:41,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1775 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2022-07-12 15:23:41,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:23:41,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992900871] [2022-07-12 15:23:41,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992900871] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 15:23:41,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 15:23:41,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-12 15:23:41,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634835469] [2022-07-12 15:23:41,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:23:41,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 15:23:41,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:23:41,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 15:23:41,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 15:23:41,657 INFO L87 Difference]: Start difference. First operand 25101 states and 35182 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, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-12 15:23:42,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:23:42,497 INFO L93 Difference]: Finished difference Result 25107 states and 35187 transitions. [2022-07-12 15:23:42,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 15:23:42,497 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, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 327 [2022-07-12 15:23:42,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:23:42,596 INFO L225 Difference]: With dead ends: 25107 [2022-07-12 15:23:42,596 INFO L226 Difference]: Without dead ends: 25105 [2022-07-12 15:23:42,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 647 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-12 15:23:42,614 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 15:23:42,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2307 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 15:23:42,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25105 states. [2022-07-12 15:23:43,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25105 to 25105. [2022-07-12 15:23:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25105 states, 18474 states have (on average 1.3337122442351412) internal successors, (24639), 18579 states have internal predecessors, (24639), 5275 states have call successors, (5275), 1354 states have call predecessors, (5275), 1353 states have return successors, (5271), 5208 states have call predecessors, (5271), 5271 states have call successors, (5271) [2022-07-12 15:23:43,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25105 states to 25105 states and 35185 transitions. [2022-07-12 15:23:43,534 INFO L78 Accepts]: Start accepts. Automaton has 25105 states and 35185 transitions. Word has length 327 [2022-07-12 15:23:43,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:23:43,535 INFO L495 AbstractCegarLoop]: Abstraction has 25105 states and 35185 transitions. [2022-07-12 15:23:43,535 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, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-12 15:23:43,535 INFO L276 IsEmpty]: Start isEmpty. Operand 25105 states and 35185 transitions. [2022-07-12 15:23:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-07-12 15:23:43,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:23:43,542 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 10, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:23:43,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-12 15:23:43,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:23:43,760 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)] === [2022-07-12 15:23:43,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:23:43,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1707017789, now seen corresponding path program 1 times [2022-07-12 15:23:43,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:23:43,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086115133] [2022-07-12 15:23:43,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:23:43,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:23:43,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:23:43,763 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) [2022-07-12 15:23:43,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-12 15:23:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:23:45,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 15:23:45,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:23:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1791 trivial. 0 not checked. [2022-07-12 15:23:46,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 15:23:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1791 trivial. 0 not checked. [2022-07-12 15:23:47,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:23:47,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086115133] [2022-07-12 15:23:47,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086115133] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 15:23:47,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 15:23:47,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-12 15:23:47,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053182997] [2022-07-12 15:23:47,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:23:47,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 15:23:47,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:23:47,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 15:23:47,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 15:23:47,686 INFO L87 Difference]: Start difference. First operand 25105 states and 35185 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, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-07-12 15:23:48,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:23:48,446 INFO L93 Difference]: Finished difference Result 25111 states and 35190 transitions. [2022-07-12 15:23:48,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 15:23:48,447 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, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 332 [2022-07-12 15:23:48,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:23:48,556 INFO L225 Difference]: With dead ends: 25111 [2022-07-12 15:23:48,556 INFO L226 Difference]: Without dead ends: 25109 [2022-07-12 15:23:48,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-12 15:23:48,576 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 15:23:48,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 15:23:48,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25109 states. [2022-07-12 15:23:49,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25109 to 25109. [2022-07-12 15:23:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25109 states, 18477 states have (on average 1.3336580613735995) internal successors, (24642), 18582 states have internal predecessors, (24642), 5275 states have call successors, (5275), 1355 states have call predecessors, (5275), 1354 states have return successors, (5271), 5208 states have call predecessors, (5271), 5271 states have call successors, (5271) [2022-07-12 15:23:49,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25109 states to 25109 states and 35188 transitions. [2022-07-12 15:23:49,618 INFO L78 Accepts]: Start accepts. Automaton has 25109 states and 35188 transitions. Word has length 332 [2022-07-12 15:23:49,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:23:49,619 INFO L495 AbstractCegarLoop]: Abstraction has 25109 states and 35188 transitions. [2022-07-12 15:23:49,619 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, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-07-12 15:23:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 25109 states and 35188 transitions. [2022-07-12 15:23:49,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-07-12 15:23:49,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:23:49,626 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 18, 18, 18, 18, 18, 18, 11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:23:49,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-07-12 15:23:49,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:23:49,827 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)] === [2022-07-12 15:23:49,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:23:49,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1323935749, now seen corresponding path program 1 times [2022-07-12 15:23:49,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:23:49,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883272982] [2022-07-12 15:23:49,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:23:49,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:23:49,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:23:49,831 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) [2022-07-12 15:23:49,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-12 15:23:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:23:51,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-12 15:23:51,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:23:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 321 proven. 3 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2022-07-12 15:23:52,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 15:23:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 51 proven. 18 refuted. 0 times theorem prover too weak. 1959 trivial. 0 not checked. [2022-07-12 15:23:53,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:23:53,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883272982] [2022-07-12 15:23:53,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883272982] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 15:23:53,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 15:23:53,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 22 [2022-07-12 15:23:53,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317803759] [2022-07-12 15:23:53,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 15:23:53,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-12 15:23:53,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:23:53,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-12 15:23:53,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-07-12 15:23:53,108 INFO L87 Difference]: Start difference. First operand 25109 states and 35188 transitions. Second operand has 22 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 6 states have call successors, (64), 3 states have call predecessors, (64), 8 states have return successors, (63), 7 states have call predecessors, (63), 6 states have call successors, (63) [2022-07-12 15:24:14,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:24:14,355 INFO L93 Difference]: Finished difference Result 65021 states and 91035 transitions. [2022-07-12 15:24:14,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 15:24:14,356 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 6 states have call successors, (64), 3 states have call predecessors, (64), 8 states have return successors, (63), 7 states have call predecessors, (63), 6 states have call successors, (63) Word has length 372 [2022-07-12 15:24:14,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:24:14,493 INFO L225 Difference]: With dead ends: 65021 [2022-07-12 15:24:14,493 INFO L226 Difference]: Without dead ends: 40939 [2022-07-12 15:24:14,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2022-07-12 15:24:14,563 INFO L413 NwaCegarLoop]: 4553 mSDtfsCounter, 8011 mSDsluCounter, 70255 mSDsCounter, 0 mSdLazyCounter, 5261 mSolverCounterSat, 1242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8200 SdHoareTripleChecker+Valid, 74808 SdHoareTripleChecker+Invalid, 6503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1242 IncrementalHoareTripleChecker+Valid, 5261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2022-07-12 15:24:14,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8200 Valid, 74808 Invalid, 6503 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1242 Valid, 5261 Invalid, 0 Unknown, 0 Unchecked, 18.4s Time] [2022-07-12 15:24:14,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40939 states. [2022-07-12 15:24:15,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40939 to 33016. [2022-07-12 15:24:15,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33016 states, 24303 states have (on average 1.333415627700284) internal successors, (32406), 24428 states have internal predecessors, (32406), 6914 states have call successors, (6914), 1797 states have call predecessors, (6914), 1796 states have return successors, (6910), 6839 states have call predecessors, (6910), 6910 states have call successors, (6910) [2022-07-12 15:24:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33016 states to 33016 states and 46230 transitions. [2022-07-12 15:24:16,127 INFO L78 Accepts]: Start accepts. Automaton has 33016 states and 46230 transitions. Word has length 372 [2022-07-12 15:24:16,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:24:16,135 INFO L495 AbstractCegarLoop]: Abstraction has 33016 states and 46230 transitions. [2022-07-12 15:24:16,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 6 states have call successors, (64), 3 states have call predecessors, (64), 8 states have return successors, (63), 7 states have call predecessors, (63), 6 states have call successors, (63) [2022-07-12 15:24:16,136 INFO L276 IsEmpty]: Start isEmpty. Operand 33016 states and 46230 transitions. [2022-07-12 15:24:16,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-07-12 15:24:16,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:24:16,142 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 11, 10, 10, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:24:16,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-07-12 15:24:16,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:24:16,368 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)] === [2022-07-12 15:24:16,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:24:16,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1001344556, now seen corresponding path program 1 times [2022-07-12 15:24:16,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:24:16,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831349599] [2022-07-12 15:24:16,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:24:16,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:24:16,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:24:16,371 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) [2022-07-12 15:24:16,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-12 15:24:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:24:17,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 2117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 15:24:17,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:24:19,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2022-07-12 15:24:19,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 15:24:20,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2022-07-12 15:24:20,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:24:20,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831349599] [2022-07-12 15:24:20,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831349599] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 15:24:20,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 15:24:20,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-12 15:24:20,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162665543] [2022-07-12 15:24:20,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:24:20,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 15:24:20,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:24:20,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 15:24:20,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 15:24:20,218 INFO L87 Difference]: Start difference. First operand 33016 states and 46230 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, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-12 15:24:21,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:24:21,514 INFO L93 Difference]: Finished difference Result 33022 states and 46235 transitions. [2022-07-12 15:24:21,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 15:24:21,515 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, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 337 [2022-07-12 15:24:21,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:24:21,633 INFO L225 Difference]: With dead ends: 33022 [2022-07-12 15:24:21,633 INFO L226 Difference]: Without dead ends: 33018 [2022-07-12 15:24:21,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-12 15:24:21,653 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 15:24:21,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 15:24:21,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33018 states. [2022-07-12 15:24:23,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33018 to 33018. [2022-07-12 15:24:23,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33018 states, 24305 states have (on average 1.3333470479325242) internal successors, (32407), 24429 states have internal predecessors, (32407), 6914 states have call successors, (6914), 1798 states have call predecessors, (6914), 1796 states have return successors, (6910), 6839 states have call predecessors, (6910), 6910 states have call successors, (6910) [2022-07-12 15:24:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33018 states to 33018 states and 46231 transitions. [2022-07-12 15:24:23,198 INFO L78 Accepts]: Start accepts. Automaton has 33018 states and 46231 transitions. Word has length 337 [2022-07-12 15:24:23,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:24:23,199 INFO L495 AbstractCegarLoop]: Abstraction has 33018 states and 46231 transitions. [2022-07-12 15:24:23,199 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, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-12 15:24:23,199 INFO L276 IsEmpty]: Start isEmpty. Operand 33018 states and 46231 transitions. [2022-07-12 15:24:23,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-07-12 15:24:23,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:24:23,205 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 18, 18, 18, 18, 18, 18, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:24:23,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-12 15:24:23,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:24:23,406 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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)] === [2022-07-12 15:24:23,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:24:23,406 INFO L85 PathProgramCache]: Analyzing trace with hash -263964520, now seen corresponding path program 1 times [2022-07-12 15:24:23,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:24:23,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196696423] [2022-07-12 15:24:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:24:23,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:24:23,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:24:23,409 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 15:24:23,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-12 15:24:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:24:25,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 15:24:25,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:24:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 1623 trivial. 0 not checked. [2022-07-12 15:24:25,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 15:24:25,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:24:25,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196696423] [2022-07-12 15:24:25,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196696423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 15:24:25,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 15:24:25,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 15:24:25,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968542782] [2022-07-12 15:24:25,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:24:25,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 15:24:25,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:24:25,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 15:24:25,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:24:25,130 INFO L87 Difference]: Start difference. First operand 33018 states and 46231 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-07-12 15:24:27,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:24:27,542 INFO L93 Difference]: Finished difference Result 96539 states and 135203 transitions. [2022-07-12 15:24:27,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 15:24:27,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 463 [2022-07-12 15:24:27,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:24:27,757 INFO L225 Difference]: With dead ends: 96539 [2022-07-12 15:24:27,757 INFO L226 Difference]: Without dead ends: 63491 [2022-07-12 15:24:27,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:24:27,840 INFO L413 NwaCegarLoop]: 3488 mSDtfsCounter, 2302 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 5854 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 15:24:27,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2302 Valid, 5854 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 15:24:27,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63491 states. [2022-07-12 15:24:30,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63491 to 63410. [2022-07-12 15:24:30,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63410 states, 46739 states have (on average 1.3334046513618178) internal successors, (62322), 46955 states have internal predecessors, (62322), 13221 states have call successors, (13221), 3457 states have call predecessors, (13221), 3447 states have return successors, (13217), 13093 states have call predecessors, (13217), 13217 states have call successors, (13217) [2022-07-12 15:24:30,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63410 states to 63410 states and 88760 transitions. [2022-07-12 15:24:30,572 INFO L78 Accepts]: Start accepts. Automaton has 63410 states and 88760 transitions. Word has length 463 [2022-07-12 15:24:30,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:24:30,573 INFO L495 AbstractCegarLoop]: Abstraction has 63410 states and 88760 transitions. [2022-07-12 15:24:30,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-07-12 15:24:30,573 INFO L276 IsEmpty]: Start isEmpty. Operand 63410 states and 88760 transitions. [2022-07-12 15:24:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-07-12 15:24:30,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:24:30,578 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 12, 11, 11, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:24:30,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-12 15:24:30,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:24:30,779 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 15:24:30,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:24:30,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1535937501, now seen corresponding path program 1 times [2022-07-12 15:24:30,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:24:30,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965661874] [2022-07-12 15:24:30,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:24:30,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:24:30,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:24:30,782 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 15:24:30,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-12 15:24:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:24:32,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 2124 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 15:24:32,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:24:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1889 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1867 trivial. 0 not checked. [2022-07-12 15:24:34,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 15:24:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1889 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1867 trivial. 0 not checked. [2022-07-12 15:24:34,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:24:34,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965661874] [2022-07-12 15:24:34,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965661874] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 15:24:34,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 15:24:34,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-12 15:24:34,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902497156] [2022-07-12 15:24:34,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:24:34,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 15:24:34,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:24:34,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 15:24:34,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 15:24:34,944 INFO L87 Difference]: Start difference. First operand 63410 states and 88760 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, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-12 15:24:37,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:24:37,544 INFO L93 Difference]: Finished difference Result 63410 states and 88760 transitions. [2022-07-12 15:24:37,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 15:24:37,545 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, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 342 [2022-07-12 15:24:37,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:24:37,884 INFO L225 Difference]: With dead ends: 63410 [2022-07-12 15:24:37,884 INFO L226 Difference]: Without dead ends: 62912 [2022-07-12 15:24:37,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-12 15:24:37,908 INFO L413 NwaCegarLoop]: 2386 mSDtfsCounter, 2300 mSDsluCounter, 4756 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2300 SdHoareTripleChecker+Valid, 7142 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 15:24:37,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2300 Valid, 7142 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 15:24:37,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62912 states. [2022-07-12 15:24:40,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62912 to 47565. [2022-07-12 15:24:40,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47565 states, 35082 states have (on average 1.3329912775782453) internal successors, (46764), 35218 states have internal predecessors, (46764), 9892 states have call successors, (9892), 2589 states have call predecessors, (9892), 2589 states have return successors, (9892), 9829 states have call predecessors, (9892), 9892 states have call successors, (9892) [2022-07-12 15:24:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47565 states to 47565 states and 66548 transitions. [2022-07-12 15:24:40,486 INFO L78 Accepts]: Start accepts. Automaton has 47565 states and 66548 transitions. Word has length 342 [2022-07-12 15:24:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:24:40,487 INFO L495 AbstractCegarLoop]: Abstraction has 47565 states and 66548 transitions. [2022-07-12 15:24:40,487 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, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-12 15:24:40,487 INFO L276 IsEmpty]: Start isEmpty. Operand 47565 states and 66548 transitions. [2022-07-12 15:24:40,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-07-12 15:24:40,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:24:40,496 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 18, 18, 18, 18, 18, 18, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:24:40,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-12 15:24:40,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:24:40,698 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-12 15:24:40,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:24:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1473888471, now seen corresponding path program 1 times [2022-07-12 15:24:40,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:24:40,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885563429] [2022-07-12 15:24:40,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:24:40,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:24:40,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:24:40,701 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 15:24:40,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-12 15:24:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:24:42,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 2247 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 15:24:42,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:24:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2022-07-12 15:24:42,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 15:24:42,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:24:42,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885563429] [2022-07-12 15:24:42,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885563429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 15:24:42,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 15:24:42,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 15:24:42,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519352485] [2022-07-12 15:24:42,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:24:42,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 15:24:42,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:24:42,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 15:24:42,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:24:42,137 INFO L87 Difference]: Start difference. First operand 47565 states and 66548 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-07-12 15:24:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:24:45,130 INFO L93 Difference]: Finished difference Result 110510 states and 154682 transitions. [2022-07-12 15:24:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 15:24:45,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 357 [2022-07-12 15:24:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:24:45,352 INFO L225 Difference]: With dead ends: 110510 [2022-07-12 15:24:45,352 INFO L226 Difference]: Without dead ends: 62916 [2022-07-12 15:24:45,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:24:45,456 INFO L413 NwaCegarLoop]: 4474 mSDtfsCounter, 2190 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2190 SdHoareTripleChecker+Valid, 6782 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 15:24:45,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2190 Valid, 6782 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 15:24:45,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62916 states. [2022-07-12 15:24:48,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62916 to 47565. [2022-07-12 15:24:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47565 states, 35082 states have (on average 1.332962772931988) internal successors, (46763), 35218 states have internal predecessors, (46763), 9892 states have call successors, (9892), 2589 states have call predecessors, (9892), 2589 states have return successors, (9892), 9829 states have call predecessors, (9892), 9892 states have call successors, (9892) [2022-07-12 15:24:48,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47565 states to 47565 states and 66547 transitions. [2022-07-12 15:24:48,203 INFO L78 Accepts]: Start accepts. Automaton has 47565 states and 66547 transitions. Word has length 357 [2022-07-12 15:24:48,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 15:24:48,203 INFO L495 AbstractCegarLoop]: Abstraction has 47565 states and 66547 transitions. [2022-07-12 15:24:48,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-07-12 15:24:48,203 INFO L276 IsEmpty]: Start isEmpty. Operand 47565 states and 66547 transitions. [2022-07-12 15:24:48,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-07-12 15:24:48,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 15:24:48,212 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 18, 18, 18, 18, 18, 18, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 15:24:48,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-12 15:24:48,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 15:24:48,413 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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)] === [2022-07-12 15:24:48,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 15:24:48,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1056491865, now seen corresponding path program 1 times [2022-07-12 15:24:48,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 15:24:48,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558437992] [2022-07-12 15:24:48,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 15:24:48,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 15:24:48,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 15:24:48,416 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 15:24:48,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-12 15:24:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 15:24:49,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 2247 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 15:24:49,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 15:24:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2022-07-12 15:24:49,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 15:24:49,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 15:24:49,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558437992] [2022-07-12 15:24:49,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558437992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 15:24:49,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 15:24:49,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 15:24:49,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374443382] [2022-07-12 15:24:49,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 15:24:49,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 15:24:49,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 15:24:49,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 15:24:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:24:49,812 INFO L87 Difference]: Start difference. First operand 47565 states and 66547 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-07-12 15:24:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 15:24:52,687 INFO L93 Difference]: Finished difference Result 110578 states and 154811 transitions. [2022-07-12 15:24:52,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 15:24:52,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 357 [2022-07-12 15:24:52,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 15:24:52,921 INFO L225 Difference]: With dead ends: 110578 [2022-07-12 15:24:52,921 INFO L226 Difference]: Without dead ends: 63103 [2022-07-12 15:24:53,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 15:24:53,065 INFO L413 NwaCegarLoop]: 4527 mSDtfsCounter, 2196 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 6831 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 15:24:53,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2196 Valid, 6831 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 15:24:53,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63103 states.