./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-smsc75xx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.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 24362a0e750636c52038fc4d3468ffab15d6b74376c584ca05819f34fdf58260 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 13:55:12,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 13:55:12,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 13:55:12,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 13:55:12,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 13:55:12,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 13:55:12,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 13:55:12,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 13:55:12,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 13:55:12,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 13:55:12,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 13:55:12,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 13:55:12,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 13:55:12,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 13:55:12,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 13:55:12,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 13:55:12,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 13:55:12,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 13:55:12,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 13:55:12,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 13:55:12,108 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 13:55:12,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 13:55:12,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 13:55:12,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 13:55:12,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 13:55:12,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 13:55:12,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 13:55:12,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 13:55:12,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 13:55:12,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 13:55:12,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 13:55:12,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 13:55:12,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 13:55:12,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 13:55:12,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 13:55:12,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 13:55:12,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 13:55:12,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 13:55:12,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 13:55:12,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 13:55:12,130 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 13:55:12,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 13:55:12,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 13:55:12,167 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 13:55:12,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 13:55:12,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 13:55:12,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 13:55:12,169 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 13:55:12,169 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 13:55:12,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 13:55:12,170 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 13:55:12,170 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 13:55:12,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 13:55:12,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 13:55:12,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 13:55:12,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 13:55:12,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 13:55:12,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 13:55:12,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 13:55:12,172 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 13:55:12,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 13:55:12,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 13:55:12,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 13:55:12,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 13:55:12,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 13:55:12,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 13:55:12,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 13:55:12,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 13:55:12,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 13:55:12,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 13:55:12,174 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 13:55:12,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 13:55:12,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 13:55:12,175 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24362a0e750636c52038fc4d3468ffab15d6b74376c584ca05819f34fdf58260 [2022-07-21 13:55:12,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 13:55:12,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 13:55:12,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 13:55:12,484 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 13:55:12,484 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 13:55:12,486 INFO L432 ainManager$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-smsc75xx.cil.i [2022-07-21 13:55:12,546 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b412964da/eed674b6259446b2983c74595e9d931d/FLAG12549af14 [2022-07-21 13:55:13,261 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 13:55:13,262 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-smsc75xx.cil.i [2022-07-21 13:55:13,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b412964da/eed674b6259446b2983c74595e9d931d/FLAG12549af14 [2022-07-21 13:55:13,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b412964da/eed674b6259446b2983c74595e9d931d [2022-07-21 13:55:13,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 13:55:13,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 13:55:13,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 13:55:13,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 13:55:13,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 13:55:13,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:55:13" (1/1) ... [2022-07-21 13:55:13,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1110224b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:13, skipping insertion in model container [2022-07-21 13:55:13,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:55:13" (1/1) ... [2022-07-21 13:55:13,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 13:55:13,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 13:55:15,695 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-smsc75xx.cil.i[359515,359528] [2022-07-21 13:55:15,697 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-smsc75xx.cil.i[359684,359697] [2022-07-21 13:55:15,698 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-smsc75xx.cil.i[359851,359864] [2022-07-21 13:55:15,698 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-smsc75xx.cil.i[360019,360032] [2022-07-21 13:55:15,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:55:15,758 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 13:55:15,913 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) [2022-07-21 13:55:15,918 INFO L158 Benchmark]: Toolchain (without parser) took 2352.30ms. Allocated memory was 54.5MB in the beginning and 117.4MB in the end (delta: 62.9MB). Free memory was 26.9MB in the beginning and 58.2MB in the end (delta: -31.3MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2022-07-21 13:55:15,918 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory is still 36.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 13:55:15,919 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2345.30ms. Allocated memory was 54.5MB in the beginning and 117.4MB in the end (delta: 62.9MB). Free memory was 26.8MB in the beginning and 58.2MB in the end (delta: -31.4MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2022-07-21 13:55:15,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory is still 36.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2345.30ms. Allocated memory was 54.5MB in the beginning and 117.4MB in the end (delta: 62.9MB). Free memory was 26.8MB in the beginning and 58.2MB in the end (delta: -31.4MB). Peak memory consumption was 47.8MB. 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-smsc75xx.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 24362a0e750636c52038fc4d3468ffab15d6b74376c584ca05819f34fdf58260 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 13:55:17,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 13:55:17,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 13:55:17,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 13:55:17,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 13:55:17,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 13:55:17,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 13:55:17,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 13:55:17,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 13:55:17,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 13:55:17,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 13:55:17,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 13:55:17,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 13:55:17,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 13:55:17,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 13:55:17,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 13:55:17,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 13:55:17,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 13:55:17,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 13:55:17,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 13:55:17,641 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 13:55:17,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 13:55:17,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 13:55:17,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 13:55:17,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 13:55:17,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 13:55:17,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 13:55:17,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 13:55:17,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 13:55:17,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 13:55:17,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 13:55:17,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 13:55:17,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 13:55:17,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 13:55:17,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 13:55:17,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 13:55:17,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 13:55:17,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 13:55:17,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 13:55:17,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 13:55:17,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 13:55:17,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 13:55:17,668 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 13:55:17,696 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 13:55:17,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 13:55:17,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 13:55:17,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 13:55:17,699 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 13:55:17,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 13:55:17,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 13:55:17,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 13:55:17,701 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 13:55:17,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 13:55:17,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 13:55:17,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 13:55:17,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 13:55:17,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 13:55:17,711 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 13:55:17,711 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 13:55:17,712 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 13:55:17,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 13:55:17,712 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 13:55:17,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 13:55:17,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 13:55:17,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 13:55:17,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 13:55:17,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 13:55:17,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 13:55:17,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 13:55:17,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 13:55:17,713 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 13:55:17,713 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 13:55:17,713 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 13:55:17,713 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 13:55:17,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 13:55:17,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 13:55:17,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24362a0e750636c52038fc4d3468ffab15d6b74376c584ca05819f34fdf58260 [2022-07-21 13:55:17,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 13:55:18,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 13:55:18,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 13:55:18,019 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 13:55:18,020 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 13:55:18,021 INFO L432 ainManager$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-smsc75xx.cil.i [2022-07-21 13:55:18,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3f869ab/ee76c66053f94abf9ec3585952a072b8/FLAG6cf51121e [2022-07-21 13:55:18,916 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 13:55:18,916 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-smsc75xx.cil.i [2022-07-21 13:55:18,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3f869ab/ee76c66053f94abf9ec3585952a072b8/FLAG6cf51121e [2022-07-21 13:55:19,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3f869ab/ee76c66053f94abf9ec3585952a072b8 [2022-07-21 13:55:19,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 13:55:19,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 13:55:19,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 13:55:19,052 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 13:55:19,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 13:55:19,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:55:19" (1/1) ... [2022-07-21 13:55:19,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce9c99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:19, skipping insertion in model container [2022-07-21 13:55:19,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:55:19" (1/1) ... [2022-07-21 13:55:19,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 13:55:19,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 13:55:21,257 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-smsc75xx.cil.i[359515,359528] [2022-07-21 13:55:21,260 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-smsc75xx.cil.i[359684,359697] [2022-07-21 13:55:21,261 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-smsc75xx.cil.i[359851,359864] [2022-07-21 13:55:21,261 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-smsc75xx.cil.i[360019,360032] [2022-07-21 13:55:21,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:55:21,320 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 13:55:21,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 13:55:21,645 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-smsc75xx.cil.i[359515,359528] [2022-07-21 13:55:21,646 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-smsc75xx.cil.i[359684,359697] [2022-07-21 13:55:21,646 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-smsc75xx.cil.i[359851,359864] [2022-07-21 13:55:21,647 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-smsc75xx.cil.i[360019,360032] [2022-07-21 13:55:21,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:55:21,678 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 13:55:21,947 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-smsc75xx.cil.i[359515,359528] [2022-07-21 13:55:21,948 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-smsc75xx.cil.i[359684,359697] [2022-07-21 13:55:21,948 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-smsc75xx.cil.i[359851,359864] [2022-07-21 13:55:21,949 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-smsc75xx.cil.i[360019,360032] [2022-07-21 13:55:21,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:55:22,258 INFO L208 MainTranslator]: Completed translation [2022-07-21 13:55:22,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:22 WrapperNode [2022-07-21 13:55:22,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 13:55:22,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 13:55:22,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 13:55:22,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 13:55:22,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:22" (1/1) ... [2022-07-21 13:55:22,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:22" (1/1) ... [2022-07-21 13:55:22,557 INFO L137 Inliner]: procedures = 405, calls = 3756, calls flagged for inlining = 180, calls inlined = 163, statements flattened = 7511 [2022-07-21 13:55:22,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 13:55:22,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 13:55:22,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 13:55:22,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 13:55:22,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:22" (1/1) ... [2022-07-21 13:55:22,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:22" (1/1) ... [2022-07-21 13:55:22,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:22" (1/1) ... [2022-07-21 13:55:22,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:22" (1/1) ... [2022-07-21 13:55:22,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:22" (1/1) ... [2022-07-21 13:55:22,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:22" (1/1) ... [2022-07-21 13:55:22,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:22" (1/1) ... [2022-07-21 13:55:22,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 13:55:22,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 13:55:22,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 13:55:22,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 13:55:22,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:22" (1/1) ... [2022-07-21 13:55:22,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 13:55:22,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 13:55:22,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 13:55:22,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 13:55:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_write_reg_nopm [2022-07-21 13:55:22,890 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_write_reg_nopm [2022-07-21 13:55:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 13:55:22,890 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 13:55:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_nway_reset [2022-07-21 13:55:22,890 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_nway_reset [2022-07-21 13:55:22,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 13:55:22,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 13:55:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure smsc_crc [2022-07-21 13:55:22,891 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc_crc [2022-07-21 13:55:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-21 13:55:22,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-21 13:55:22,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-07-21 13:55:22,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-07-21 13:55:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_enable_phy_wakeup_interrupts [2022-07-21 13:55:22,892 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_enable_phy_wakeup_interrupts [2022-07-21 13:55:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_reset [2022-07-21 13:55:22,892 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_reset [2022-07-21 13:55:22,892 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_wait_eeprom [2022-07-21 13:55:22,892 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_wait_eeprom [2022-07-21 13:55:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc75xx_mdio_write [2022-07-21 13:55:22,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc75xx_mdio_write [2022-07-21 13:55:22,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-21 13:55:22,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-07-21 13:55:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2022-07-21 13:55:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-07-21 13:55:22,894 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-07-21 13:55:22,894 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_rx_csum_offload [2022-07-21 13:55:22,895 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_rx_csum_offload [2022-07-21 13:55:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-21 13:55:22,895 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-21 13:55:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-21 13:55:22,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-21 13:55:22,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 13:55:22,896 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_set_features [2022-07-21 13:55:22,896 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_set_features [2022-07-21 13:55:22,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-21 13:55:22,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 13:55:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 13:55:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-21 13:55:22,897 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2022-07-21 13:55:22,898 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2022-07-21 13:55:22,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-07-21 13:55:22,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-07-21 13:55:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2022-07-21 13:55:22,899 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2022-07-21 13:55:22,899 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_mdio_read_nopm [2022-07-21 13:55:22,899 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_mdio_read_nopm [2022-07-21 13:55:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 13:55:22,900 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 13:55:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2022-07-21 13:55:22,900 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc75xx_phy_wait_not_busy [2022-07-21 13:55:22,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc75xx_phy_wait_not_busy [2022-07-21 13:55:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-07-21 13:55:22,901 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-07-21 13:55:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_mdio_write [2022-07-21 13:55:22,901 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_mdio_write [2022-07-21 13:55:22,901 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2022-07-21 13:55:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-21 13:55:22,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-21 13:55:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 13:55:22,902 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-07-21 13:55:22,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-07-21 13:55:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-07-21 13:55:22,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-07-21 13:55:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 13:55:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-21 13:55:22,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-21 13:55:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-21 13:55:22,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-21 13:55:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 13:55:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-21 13:55:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-21 13:55:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-21 13:55:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2022-07-21 13:55:22,905 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2022-07-21 13:55:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_mdio_read [2022-07-21 13:55:22,905 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_mdio_read [2022-07-21 13:55:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_set_rx_max_frame_length [2022-07-21 13:55:22,906 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_set_rx_max_frame_length [2022-07-21 13:55:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-07-21 13:55:22,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-07-21 13:55:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-21 13:55:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 13:55:22,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 13:55:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc75xx_read_reg [2022-07-21 13:55:22,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc75xx_read_reg [2022-07-21 13:55:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 13:55:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-21 13:55:22,908 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-21 13:55:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-21 13:55:22,908 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-21 13:55:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_ethtool_get_eeprom_len [2022-07-21 13:55:22,908 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_ethtool_get_eeprom_len [2022-07-21 13:55:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 13:55:22,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 13:55:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 13:55:22,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 13:55:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 13:55:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 13:55:22,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 13:55:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smsc75xx_driver_exit_6_2 [2022-07-21 13:55:22,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smsc75xx_driver_exit_6_2 [2022-07-21 13:55:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-21 13:55:22,948 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-21 13:55:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-21 13:55:22,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-21 13:55:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_read_reg [2022-07-21 13:55:22,949 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_read_reg [2022-07-21 13:55:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2022-07-21 13:55:22,949 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2022-07-21 13:55:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 13:55:22,949 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 13:55:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_mdio_write_nopm [2022-07-21 13:55:22,949 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_mdio_write_nopm [2022-07-21 13:55:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_set_multicast [2022-07-21 13:55:22,949 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_set_multicast [2022-07-21 13:55:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 13:55:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-21 13:55:22,949 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-21 13:55:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 13:55:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 13:55:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 13:55:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 13:55:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 13:55:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 13:55:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-21 13:55:22,950 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-21 13:55:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-21 13:55:22,950 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-21 13:55:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc75xx_mdio_read [2022-07-21 13:55:22,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc75xx_mdio_read [2022-07-21 13:55:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-07-21 13:55:22,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-07-21 13:55:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-21 13:55:22,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-21 13:55:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_read_reg_nopm [2022-07-21 13:55:22,950 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_read_reg_nopm [2022-07-21 13:55:22,950 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-07-21 13:55:22,951 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-07-21 13:55:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc75xx_write_reg [2022-07-21 13:55:22,951 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc75xx_write_reg [2022-07-21 13:55:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_2_4 [2022-07-21 13:55:22,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_2_4 [2022-07-21 13:55:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-21 13:55:22,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-21 13:55:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_wait_ready [2022-07-21 13:55:22,951 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_wait_ready [2022-07-21 13:55:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-21 13:55:22,951 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-21 13:55:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-21 13:55:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-21 13:55:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 13:55:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-21 13:55:22,951 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_read_eeprom [2022-07-21 13:55:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_read_eeprom [2022-07-21 13:55:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 13:55:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 13:55:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2022-07-21 13:55:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_link_reset [2022-07-21 13:55:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_link_reset [2022-07-21 13:55:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_resume [2022-07-21 13:55:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_resume [2022-07-21 13:55:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_write_wuff [2022-07-21 13:55:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_write_wuff [2022-07-21 13:55:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_eeprom_confirm_not_busy [2022-07-21 13:55:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_eeprom_confirm_not_busy [2022-07-21 13:55:22,952 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 [2022-07-21 13:55:22,952 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 [2022-07-21 13:55:22,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-07-21 13:55:22,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-07-21 13:55:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_enter_suspend2 [2022-07-21 13:55:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_enter_suspend2 [2022-07-21 13:55:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_enter_suspend1 [2022-07-21 13:55:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_enter_suspend1 [2022-07-21 13:55:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_write_reg [2022-07-21 13:55:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_write_reg [2022-07-21 13:55:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rfe_ctl_lock_of_smsc75xx_priv [2022-07-21 13:55:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rfe_ctl_lock_of_smsc75xx_priv [2022-07-21 13:55:22,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-07-21 13:55:22,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-07-21 13:55:23,782 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 13:55:23,785 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 13:55:23,945 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 13:56:13,044 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-07-21 13:56:13,129 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 13:56:13,145 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 13:56:13,145 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 13:56:13,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:56:13 BoogieIcfgContainer [2022-07-21 13:56:13,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 13:56:13,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 13:56:13,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 13:56:13,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 13:56:13,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:55:19" (1/3) ... [2022-07-21 13:56:13,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e102165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:56:13, skipping insertion in model container [2022-07-21 13:56:13,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:22" (2/3) ... [2022-07-21 13:56:13,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e102165 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:56:13, skipping insertion in model container [2022-07-21 13:56:13,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:56:13" (3/3) ... [2022-07-21 13:56:13,155 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i [2022-07-21 13:56:13,167 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 13:56:13,167 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-21 13:56:13,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 13:56:13,247 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@3288bb65, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@51b913bb [2022-07-21 13:56:13,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 13:56:13,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 1730 states, 1252 states have (on average 1.3594249201277955) internal successors, (1702), 1255 states have internal predecessors, (1702), 403 states have call successors, (403), 73 states have call predecessors, (403), 72 states have return successors, (396), 396 states have call predecessors, (396), 396 states have call successors, (396) [2022-07-21 13:56:13,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-21 13:56:13,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:13,283 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:13,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:13,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:13,288 INFO L85 PathProgramCache]: Analyzing trace with hash -747547048, now seen corresponding path program 1 times [2022-07-21 13:56:13,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:13,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773321866] [2022-07-21 13:56:13,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:13,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:13,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:13,310 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:13,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 13:56:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:14,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:56:14,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2022-07-21 13:56:14,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:56:14,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:14,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773321866] [2022-07-21 13:56:14,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773321866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:56:14,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:56:14,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:56:14,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053650723] [2022-07-21 13:56:14,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:14,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:56:14,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:14,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:56:14,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:14,616 INFO L87 Difference]: Start difference. First operand has 1730 states, 1252 states have (on average 1.3594249201277955) internal successors, (1702), 1255 states have internal predecessors, (1702), 403 states have call successors, (403), 73 states have call predecessors, (403), 72 states have return successors, (396), 396 states have call predecessors, (396), 396 states have call successors, (396) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 13:56:15,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:15,150 INFO L93 Difference]: Finished difference Result 5006 states and 7625 transitions. [2022-07-21 13:56:15,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:56:15,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 217 [2022-07-21 13:56:15,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:15,182 INFO L225 Difference]: With dead ends: 5006 [2022-07-21 13:56:15,182 INFO L226 Difference]: Without dead ends: 3304 [2022-07-21 13:56:15,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:15,200 INFO L413 NwaCegarLoop]: 2842 mSDtfsCounter, 2317 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 5268 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 [2022-07-21 13:56:15,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2317 Valid, 5268 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:56:15,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2022-07-21 13:56:15,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 3300. [2022-07-21 13:56:15,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 2416 states have (on average 1.3555463576158941) internal successors, (3275), 2421 states have internal predecessors, (3275), 741 states have call successors, (741), 141 states have call predecessors, (741), 140 states have return successors, (737), 737 states have call predecessors, (737), 737 states have call successors, (737) [2022-07-21 13:56:15,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4753 transitions. [2022-07-21 13:56:15,402 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4753 transitions. Word has length 217 [2022-07-21 13:56:15,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:15,404 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 4753 transitions. [2022-07-21 13:56:15,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 13:56:15,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4753 transitions. [2022-07-21 13:56:15,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-21 13:56:15,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:15,413 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:15,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 13:56:15,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:56:15,629 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:15,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:15,630 INFO L85 PathProgramCache]: Analyzing trace with hash 379538310, now seen corresponding path program 1 times [2022-07-21 13:56:15,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:15,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694706642] [2022-07-21 13:56:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:15,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:15,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:15,635 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:15,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 13:56:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:16,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:56:16,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2022-07-21 13:56:16,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:56:16,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:16,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694706642] [2022-07-21 13:56:16,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694706642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:56:16,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:56:16,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:56:16,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287018039] [2022-07-21 13:56:16,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:16,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:56:16,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:16,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:56:16,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:16,969 INFO L87 Difference]: Start difference. First operand 3300 states and 4753 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 13:56:17,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:17,478 INFO L93 Difference]: Finished difference Result 7817 states and 11269 transitions. [2022-07-21 13:56:17,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:56:17,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 228 [2022-07-21 13:56:17,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:17,504 INFO L225 Difference]: With dead ends: 7817 [2022-07-21 13:56:17,505 INFO L226 Difference]: Without dead ends: 4556 [2022-07-21 13:56:17,517 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 [2022-07-21 13:56:17,519 INFO L413 NwaCegarLoop]: 2946 mSDtfsCounter, 2091 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 5331 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:17,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 5331 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 13:56:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2022-07-21 13:56:17,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 4529. [2022-07-21 13:56:17,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4529 states, 3275 states have (on average 1.3578625954198473) internal successors, (4447), 3285 states have internal predecessors, (4447), 1042 states have call successors, (1042), 210 states have call predecessors, (1042), 209 states have return successors, (1038), 1033 states have call predecessors, (1038), 1038 states have call successors, (1038) [2022-07-21 13:56:17,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 6527 transitions. [2022-07-21 13:56:17,700 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 6527 transitions. Word has length 228 [2022-07-21 13:56:17,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:17,702 INFO L495 AbstractCegarLoop]: Abstraction has 4529 states and 6527 transitions. [2022-07-21 13:56:17,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 13:56:17,703 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 6527 transitions. [2022-07-21 13:56:17,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-07-21 13:56:17,709 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:17,710 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 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] [2022-07-21 13:56:17,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-21 13:56:17,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:56:17,931 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)] === [2022-07-21 13:56:17,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:17,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1569969785, now seen corresponding path program 1 times [2022-07-21 13:56:17,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:17,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034717515] [2022-07-21 13:56:17,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:17,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:17,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:17,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:17,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 13:56:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:19,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 1943 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:56:19,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 1398 trivial. 0 not checked. [2022-07-21 13:56:19,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:56:19,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:19,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034717515] [2022-07-21 13:56:19,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034717515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:56:19,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:56:19,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:56:19,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078877086] [2022-07-21 13:56:19,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:19,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:56:19,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:19,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:56:19,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:19,194 INFO L87 Difference]: Start difference. First operand 4529 states and 6527 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-21 13:56:19,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:19,621 INFO L93 Difference]: Finished difference Result 10620 states and 15308 transitions. [2022-07-21 13:56:19,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:56:19,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 276 [2022-07-21 13:56:19,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:19,666 INFO L225 Difference]: With dead ends: 10620 [2022-07-21 13:56:19,666 INFO L226 Difference]: Without dead ends: 7492 [2022-07-21 13:56:19,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:19,683 INFO L413 NwaCegarLoop]: 4745 mSDtfsCounter, 2278 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 7179 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 [2022-07-21 13:56:19,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 7179 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:56:19,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7492 states. [2022-07-21 13:56:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7492 to 7488. [2022-07-21 13:56:19,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7488 states, 5440 states have (on average 1.3597426470588236) internal successors, (7397), 5450 states have internal predecessors, (7397), 1700 states have call successors, (1700), 346 states have call predecessors, (1700), 345 states have return successors, (1696), 1691 states have call predecessors, (1696), 1696 states have call successors, (1696) [2022-07-21 13:56:20,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7488 states to 7488 states and 10793 transitions. [2022-07-21 13:56:20,077 INFO L78 Accepts]: Start accepts. Automaton has 7488 states and 10793 transitions. Word has length 276 [2022-07-21 13:56:20,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:20,078 INFO L495 AbstractCegarLoop]: Abstraction has 7488 states and 10793 transitions. [2022-07-21 13:56:20,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-21 13:56:20,079 INFO L276 IsEmpty]: Start isEmpty. Operand 7488 states and 10793 transitions. [2022-07-21 13:56:20,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-07-21 13:56:20,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:20,086 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 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] [2022-07-21 13:56:20,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 13:56:20,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:56:20,304 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)] === [2022-07-21 13:56:20,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:20,304 INFO L85 PathProgramCache]: Analyzing trace with hash -801769477, now seen corresponding path program 1 times [2022-07-21 13:56:20,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:20,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724094381] [2022-07-21 13:56:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:20,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:20,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:20,311 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:20,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 13:56:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:21,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1943 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:21,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2022-07-21 13:56:22,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:56:22,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:22,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724094381] [2022-07-21 13:56:22,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724094381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:56:22,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:56:22,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 13:56:22,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973272590] [2022-07-21 13:56:22,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:22,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:22,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:22,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:22,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:56:22,390 INFO L87 Difference]: Start difference. First operand 7488 states and 10793 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-07-21 13:56:22,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:22,654 INFO L93 Difference]: Finished difference Result 7494 states and 10798 transitions. [2022-07-21 13:56:22,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:56:22,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 276 [2022-07-21 13:56:22,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:22,699 INFO L225 Difference]: With dead ends: 7494 [2022-07-21 13:56:22,699 INFO L226 Difference]: Without dead ends: 7492 [2022-07-21 13:56:22,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:22,707 INFO L413 NwaCegarLoop]: 2464 mSDtfsCounter, 2359 mSDsluCounter, 4916 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 7380 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 [2022-07-21 13:56:22,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 7380 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:22,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7492 states. [2022-07-21 13:56:23,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7492 to 7492. [2022-07-21 13:56:23,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7492 states, 5443 states have (on average 1.3595443689142017) internal successors, (7400), 5453 states have internal predecessors, (7400), 1700 states have call successors, (1700), 347 states have call predecessors, (1700), 346 states have return successors, (1696), 1691 states have call predecessors, (1696), 1696 states have call successors, (1696) [2022-07-21 13:56:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7492 states to 7492 states and 10796 transitions. [2022-07-21 13:56:23,138 INFO L78 Accepts]: Start accepts. Automaton has 7492 states and 10796 transitions. Word has length 276 [2022-07-21 13:56:23,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:23,139 INFO L495 AbstractCegarLoop]: Abstraction has 7492 states and 10796 transitions. [2022-07-21 13:56:23,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-07-21 13:56:23,140 INFO L276 IsEmpty]: Start isEmpty. Operand 7492 states and 10796 transitions. [2022-07-21 13:56:23,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-07-21 13:56:23,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:23,147 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 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] [2022-07-21 13:56:23,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 13:56:23,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:56:23,367 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:23,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:23,368 INFO L85 PathProgramCache]: Analyzing trace with hash -66650535, now seen corresponding path program 1 times [2022-07-21 13:56:23,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:23,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101048938] [2022-07-21 13:56:23,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:23,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:23,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:23,373 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:23,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 13:56:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:24,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:24,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1484 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2022-07-21 13:56:25,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1484 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2022-07-21 13:56:25,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:25,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101048938] [2022-07-21 13:56:25,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101048938] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:25,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:25,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:25,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015378911] [2022-07-21 13:56:25,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:25,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:25,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:25,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:25,789 INFO L87 Difference]: Start difference. First operand 7492 states and 10796 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 13:56:26,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:26,113 INFO L93 Difference]: Finished difference Result 7498 states and 10801 transitions. [2022-07-21 13:56:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:26,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 281 [2022-07-21 13:56:26,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:26,170 INFO L225 Difference]: With dead ends: 7498 [2022-07-21 13:56:26,170 INFO L226 Difference]: Without dead ends: 7496 [2022-07-21 13:56:26,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:56:26,177 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2395 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:26,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2395 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:26,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7496 states. [2022-07-21 13:56:26,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7496 to 7496. [2022-07-21 13:56:26,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 5446 states have (on average 1.3593463092177744) internal successors, (7403), 5456 states have internal predecessors, (7403), 1700 states have call successors, (1700), 348 states have call predecessors, (1700), 347 states have return successors, (1696), 1691 states have call predecessors, (1696), 1696 states have call successors, (1696) [2022-07-21 13:56:26,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 10799 transitions. [2022-07-21 13:56:26,471 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 10799 transitions. Word has length 281 [2022-07-21 13:56:26,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:26,472 INFO L495 AbstractCegarLoop]: Abstraction has 7496 states and 10799 transitions. [2022-07-21 13:56:26,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 13:56:26,472 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 10799 transitions. [2022-07-21 13:56:26,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-07-21 13:56:26,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:26,481 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 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] [2022-07-21 13:56:26,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 13:56:26,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:56:26,695 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:26,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:26,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1752062587, now seen corresponding path program 1 times [2022-07-21 13:56:26,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:26,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776300903] [2022-07-21 13:56:26,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:26,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:26,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:26,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:26,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 13:56:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:27,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:27,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:28,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1490 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2022-07-21 13:56:28,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1490 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2022-07-21 13:56:29,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:29,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776300903] [2022-07-21 13:56:29,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776300903] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:29,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:29,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:29,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374507467] [2022-07-21 13:56:29,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:29,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:29,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:29,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:29,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:29,210 INFO L87 Difference]: Start difference. First operand 7496 states and 10799 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 13:56:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:29,476 INFO L93 Difference]: Finished difference Result 7502 states and 10804 transitions. [2022-07-21 13:56:29,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:29,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 286 [2022-07-21 13:56:29,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:29,506 INFO L225 Difference]: With dead ends: 7502 [2022-07-21 13:56:29,507 INFO L226 Difference]: Without dead ends: 7500 [2022-07-21 13:56:29,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:56:29,513 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2394 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:29,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2394 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:29,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7500 states. [2022-07-21 13:56:29,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7500 to 7500. [2022-07-21 13:56:29,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7500 states, 5449 states have (on average 1.3591484676087355) internal successors, (7406), 5459 states have internal predecessors, (7406), 1700 states have call successors, (1700), 349 states have call predecessors, (1700), 348 states have return successors, (1696), 1691 states have call predecessors, (1696), 1696 states have call successors, (1696) [2022-07-21 13:56:29,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7500 states to 7500 states and 10802 transitions. [2022-07-21 13:56:29,807 INFO L78 Accepts]: Start accepts. Automaton has 7500 states and 10802 transitions. Word has length 286 [2022-07-21 13:56:29,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:29,807 INFO L495 AbstractCegarLoop]: Abstraction has 7500 states and 10802 transitions. [2022-07-21 13:56:29,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 13:56:29,808 INFO L276 IsEmpty]: Start isEmpty. Operand 7500 states and 10802 transitions. [2022-07-21 13:56:29,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-07-21 13:56:29,816 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:29,817 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:29,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 13:56:30,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:56:30,040 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:30,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:30,040 INFO L85 PathProgramCache]: Analyzing trace with hash -906189480, now seen corresponding path program 1 times [2022-07-21 13:56:30,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:30,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176722293] [2022-07-21 13:56:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:30,042 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:30,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:30,043 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:30,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 13:56:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:31,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 2006 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:56:31,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1509 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2022-07-21 13:56:31,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:56:31,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:31,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176722293] [2022-07-21 13:56:31,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176722293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:56:31,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:56:31,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:56:31,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474896719] [2022-07-21 13:56:31,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:31,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:56:31,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:31,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:56:31,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:31,116 INFO L87 Difference]: Start difference. First operand 7500 states and 10802 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (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) [2022-07-21 13:56:31,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:31,629 INFO L93 Difference]: Finished difference Result 16594 states and 23899 transitions. [2022-07-21 13:56:31,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:56:31,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (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 300 [2022-07-21 13:56:31,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:31,668 INFO L225 Difference]: With dead ends: 16594 [2022-07-21 13:56:31,669 INFO L226 Difference]: Without dead ends: 10495 [2022-07-21 13:56:31,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:31,693 INFO L413 NwaCegarLoop]: 4757 mSDtfsCounter, 2311 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 7193 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:31,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2311 Valid, 7193 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:56:31,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10495 states. [2022-07-21 13:56:31,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10495 to 10461. [2022-07-21 13:56:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10461 states, 7616 states have (on average 1.360031512605042) internal successors, (10358), 7626 states have internal predecessors, (10358), 2358 states have call successors, (2358), 485 states have call predecessors, (2358), 484 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-21 13:56:32,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10461 states to 10461 states and 15070 transitions. [2022-07-21 13:56:32,120 INFO L78 Accepts]: Start accepts. Automaton has 10461 states and 15070 transitions. Word has length 300 [2022-07-21 13:56:32,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:32,122 INFO L495 AbstractCegarLoop]: Abstraction has 10461 states and 15070 transitions. [2022-07-21 13:56:32,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (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) [2022-07-21 13:56:32,122 INFO L276 IsEmpty]: Start isEmpty. Operand 10461 states and 15070 transitions. [2022-07-21 13:56:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-21 13:56:32,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:32,130 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 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] [2022-07-21 13:56:32,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 13:56:32,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:56:32,352 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:32,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:32,352 INFO L85 PathProgramCache]: Analyzing trace with hash -597533863, now seen corresponding path program 1 times [2022-07-21 13:56:32,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:32,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339664729] [2022-07-21 13:56:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:32,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:32,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:32,355 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:32,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 13:56:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:33,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 1964 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:33,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1494 trivial. 0 not checked. [2022-07-21 13:56:34,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:34,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1494 trivial. 0 not checked. [2022-07-21 13:56:34,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:34,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339664729] [2022-07-21 13:56:34,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339664729] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:34,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:34,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:34,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589959182] [2022-07-21 13:56:34,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:34,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:34,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:34,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:34,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:34,610 INFO L87 Difference]: Start difference. First operand 10461 states and 15070 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 13:56:34,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:34,968 INFO L93 Difference]: Finished difference Result 10467 states and 15075 transitions. [2022-07-21 13:56:34,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:34,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 291 [2022-07-21 13:56:34,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:35,003 INFO L225 Difference]: With dead ends: 10467 [2022-07-21 13:56:35,003 INFO L226 Difference]: Without dead ends: 10465 [2022-07-21 13:56:35,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:56:35,010 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2393 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:35,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2393 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:56:35,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10465 states. [2022-07-21 13:56:35,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10465 to 10465. [2022-07-21 13:56:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10465 states, 7619 states have (on average 1.3598897493109332) internal successors, (10361), 7629 states have internal predecessors, (10361), 2358 states have call successors, (2358), 486 states have call predecessors, (2358), 485 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-21 13:56:35,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10465 states to 10465 states and 15073 transitions. [2022-07-21 13:56:35,429 INFO L78 Accepts]: Start accepts. Automaton has 10465 states and 15073 transitions. Word has length 291 [2022-07-21 13:56:35,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:35,430 INFO L495 AbstractCegarLoop]: Abstraction has 10465 states and 15073 transitions. [2022-07-21 13:56:35,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 13:56:35,430 INFO L276 IsEmpty]: Start isEmpty. Operand 10465 states and 15073 transitions. [2022-07-21 13:56:35,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-07-21 13:56:35,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:35,440 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 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] [2022-07-21 13:56:35,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-21 13:56:35,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:56:35,669 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:35,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:35,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1004489979, now seen corresponding path program 1 times [2022-07-21 13:56:35,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:35,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113106331] [2022-07-21 13:56:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:35,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:35,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:35,674 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:35,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 13:56:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:36,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 1971 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:36,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-07-21 13:56:37,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-07-21 13:56:37,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:37,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113106331] [2022-07-21 13:56:37,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113106331] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:37,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:37,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:37,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300177335] [2022-07-21 13:56:37,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:37,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:37,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:37,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:37,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:37,904 INFO L87 Difference]: Start difference. First operand 10465 states and 15073 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-21 13:56:38,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:38,271 INFO L93 Difference]: Finished difference Result 10471 states and 15078 transitions. [2022-07-21 13:56:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:38,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 296 [2022-07-21 13:56:38,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:38,315 INFO L225 Difference]: With dead ends: 10471 [2022-07-21 13:56:38,315 INFO L226 Difference]: Without dead ends: 10469 [2022-07-21 13:56:38,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:56:38,323 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2392 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:38,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2392 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:56:38,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10469 states. [2022-07-21 13:56:38,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10469 to 10469. [2022-07-21 13:56:38,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10469 states, 7622 states have (on average 1.3597480976121752) internal successors, (10364), 7632 states have internal predecessors, (10364), 2358 states have call successors, (2358), 487 states have call predecessors, (2358), 486 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-21 13:56:38,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10469 states to 10469 states and 15076 transitions. [2022-07-21 13:56:38,801 INFO L78 Accepts]: Start accepts. Automaton has 10469 states and 15076 transitions. Word has length 296 [2022-07-21 13:56:38,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:38,802 INFO L495 AbstractCegarLoop]: Abstraction has 10469 states and 15076 transitions. [2022-07-21 13:56:38,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-21 13:56:38,802 INFO L276 IsEmpty]: Start isEmpty. Operand 10469 states and 15076 transitions. [2022-07-21 13:56:38,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-07-21 13:56:38,812 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:38,812 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 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] [2022-07-21 13:56:38,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 13:56:39,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:56:39,036 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:39,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:39,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2120165465, now seen corresponding path program 1 times [2022-07-21 13:56:39,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:39,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487183234] [2022-07-21 13:56:39,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:39,038 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:39,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:39,044 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:39,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 13:56:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:40,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:40,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:41,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1532 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1522 trivial. 0 not checked. [2022-07-21 13:56:41,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1532 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1522 trivial. 0 not checked. [2022-07-21 13:56:41,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:41,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487183234] [2022-07-21 13:56:41,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487183234] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:41,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:41,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:41,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314524579] [2022-07-21 13:56:41,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:41,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:41,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:41,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:41,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:41,497 INFO L87 Difference]: Start difference. First operand 10469 states and 15076 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 13:56:41,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:41,773 INFO L93 Difference]: Finished difference Result 10475 states and 15081 transitions. [2022-07-21 13:56:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:41,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 301 [2022-07-21 13:56:41,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:41,810 INFO L225 Difference]: With dead ends: 10475 [2022-07-21 13:56:41,810 INFO L226 Difference]: Without dead ends: 10473 [2022-07-21 13:56:41,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:56:41,816 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2391 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:41,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2391 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:56:41,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10473 states. [2022-07-21 13:56:42,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10473 to 10473. [2022-07-21 13:56:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10473 states, 7625 states have (on average 1.3596065573770493) internal successors, (10367), 7635 states have internal predecessors, (10367), 2358 states have call successors, (2358), 488 states have call predecessors, (2358), 487 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-21 13:56:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10473 states to 10473 states and 15079 transitions. [2022-07-21 13:56:42,241 INFO L78 Accepts]: Start accepts. Automaton has 10473 states and 15079 transitions. Word has length 301 [2022-07-21 13:56:42,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:42,241 INFO L495 AbstractCegarLoop]: Abstraction has 10473 states and 15079 transitions. [2022-07-21 13:56:42,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 13:56:42,242 INFO L276 IsEmpty]: Start isEmpty. Operand 10473 states and 15079 transitions. [2022-07-21 13:56:42,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-07-21 13:56:42,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:42,250 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 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] [2022-07-21 13:56:42,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 13:56:42,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:56:42,472 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:42,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:42,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1226100603, now seen corresponding path program 1 times [2022-07-21 13:56:42,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:42,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089321280] [2022-07-21 13:56:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:42,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:42,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:42,477 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:42,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 13:56:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:43,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:43,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2022-07-21 13:56:44,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2022-07-21 13:56:44,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:44,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089321280] [2022-07-21 13:56:44,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089321280] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:44,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:44,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:44,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743408357] [2022-07-21 13:56:44,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:44,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:44,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:44,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:44,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:44,755 INFO L87 Difference]: Start difference. First operand 10473 states and 15079 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 13:56:45,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:45,095 INFO L93 Difference]: Finished difference Result 10479 states and 15084 transitions. [2022-07-21 13:56:45,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:45,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 306 [2022-07-21 13:56:45,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:45,138 INFO L225 Difference]: With dead ends: 10479 [2022-07-21 13:56:45,139 INFO L226 Difference]: Without dead ends: 10477 [2022-07-21 13:56:45,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:56:45,147 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:45,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2390 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:56:45,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10477 states. [2022-07-21 13:56:45,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10477 to 10477. [2022-07-21 13:56:45,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10477 states, 7628 states have (on average 1.359465128474043) internal successors, (10370), 7638 states have internal predecessors, (10370), 2358 states have call successors, (2358), 489 states have call predecessors, (2358), 488 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-21 13:56:45,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10477 states to 10477 states and 15082 transitions. [2022-07-21 13:56:45,579 INFO L78 Accepts]: Start accepts. Automaton has 10477 states and 15082 transitions. Word has length 306 [2022-07-21 13:56:45,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:45,580 INFO L495 AbstractCegarLoop]: Abstraction has 10477 states and 15082 transitions. [2022-07-21 13:56:45,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 13:56:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 10477 states and 15082 transitions. [2022-07-21 13:56:45,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-07-21 13:56:45,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:45,589 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 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] [2022-07-21 13:56:45,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-07-21 13:56:45,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:56:45,804 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:45,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:45,804 INFO L85 PathProgramCache]: Analyzing trace with hash 452027737, now seen corresponding path program 1 times [2022-07-21 13:56:45,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:45,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026799442] [2022-07-21 13:56:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:45,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:45,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:45,807 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:45,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 13:56:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:46,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 1992 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:46,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1566 trivial. 0 not checked. [2022-07-21 13:56:47,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:48,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1566 trivial. 0 not checked. [2022-07-21 13:56:48,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:48,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026799442] [2022-07-21 13:56:48,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026799442] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:48,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:48,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:48,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255270951] [2022-07-21 13:56:48,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:48,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:48,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:48,021 INFO L87 Difference]: Start difference. First operand 10477 states and 15082 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 13:56:48,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:48,253 INFO L93 Difference]: Finished difference Result 10483 states and 15087 transitions. [2022-07-21 13:56:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:48,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 311 [2022-07-21 13:56:48,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:48,293 INFO L225 Difference]: With dead ends: 10483 [2022-07-21 13:56:48,294 INFO L226 Difference]: Without dead ends: 10481 [2022-07-21 13:56:48,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:56:48,301 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2389 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:48,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2389 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:56:48,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10481 states. [2022-07-21 13:56:48,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10481 to 10481. [2022-07-21 13:56:48,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10481 states, 7631 states have (on average 1.3593238107718517) internal successors, (10373), 7641 states have internal predecessors, (10373), 2358 states have call successors, (2358), 490 states have call predecessors, (2358), 489 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-21 13:56:48,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10481 states to 10481 states and 15085 transitions. [2022-07-21 13:56:48,733 INFO L78 Accepts]: Start accepts. Automaton has 10481 states and 15085 transitions. Word has length 311 [2022-07-21 13:56:48,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:48,734 INFO L495 AbstractCegarLoop]: Abstraction has 10481 states and 15085 transitions. [2022-07-21 13:56:48,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 13:56:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 10481 states and 15085 transitions. [2022-07-21 13:56:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-07-21 13:56:48,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:48,746 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 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] [2022-07-21 13:56:48,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 13:56:48,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:56:48,959 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:48,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:48,960 INFO L85 PathProgramCache]: Analyzing trace with hash -811933189, now seen corresponding path program 1 times [2022-07-21 13:56:48,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:48,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383541949] [2022-07-21 13:56:48,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:48,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:48,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:48,963 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:48,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 13:56:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:49,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:49,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2022-07-21 13:56:50,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:51,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2022-07-21 13:56:51,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:51,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383541949] [2022-07-21 13:56:51,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383541949] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:51,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:51,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:51,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183483418] [2022-07-21 13:56:51,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:51,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:51,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:51,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:51,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:51,511 INFO L87 Difference]: Start difference. First operand 10481 states and 15085 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 13:56:51,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:51,806 INFO L93 Difference]: Finished difference Result 10487 states and 15090 transitions. [2022-07-21 13:56:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:51,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 316 [2022-07-21 13:56:51,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:51,835 INFO L225 Difference]: With dead ends: 10487 [2022-07-21 13:56:51,835 INFO L226 Difference]: Without dead ends: 10485 [2022-07-21 13:56:51,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:56:51,840 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:51,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2388 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:56:51,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10485 states. [2022-07-21 13:56:52,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10485 to 10485. [2022-07-21 13:56:52,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10485 states, 7634 states have (on average 1.3591826041393764) internal successors, (10376), 7644 states have internal predecessors, (10376), 2358 states have call successors, (2358), 491 states have call predecessors, (2358), 490 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-21 13:56:52,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10485 states to 10485 states and 15088 transitions. [2022-07-21 13:56:52,242 INFO L78 Accepts]: Start accepts. Automaton has 10485 states and 15088 transitions. Word has length 316 [2022-07-21 13:56:52,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:52,243 INFO L495 AbstractCegarLoop]: Abstraction has 10485 states and 15088 transitions. [2022-07-21 13:56:52,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 13:56:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand 10485 states and 15088 transitions. [2022-07-21 13:56:52,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-07-21 13:56:52,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:52,255 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 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] [2022-07-21 13:56:52,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 13:56:52,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:56:52,471 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:52,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1242370649, now seen corresponding path program 1 times [2022-07-21 13:56:52,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:52,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378624586] [2022-07-21 13:56:52,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:52,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:52,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:52,476 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:52,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-21 13:56:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:53,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 2006 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:53,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1644 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1626 trivial. 0 not checked. [2022-07-21 13:56:54,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1644 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1626 trivial. 0 not checked. [2022-07-21 13:56:54,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:54,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378624586] [2022-07-21 13:56:54,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378624586] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:54,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:54,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:54,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862715680] [2022-07-21 13:56:54,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:54,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:54,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:54,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:54,777 INFO L87 Difference]: Start difference. First operand 10485 states and 15088 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 13:56:55,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:55,157 INFO L93 Difference]: Finished difference Result 10540 states and 15128 transitions. [2022-07-21 13:56:55,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:55,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 321 [2022-07-21 13:56:55,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:55,194 INFO L225 Difference]: With dead ends: 10540 [2022-07-21 13:56:55,194 INFO L226 Difference]: Without dead ends: 10538 [2022-07-21 13:56:55,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:56:55,203 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2311 mSDsluCounter, 4992 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 7459 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:55,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2313 Valid, 7459 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:56:55,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10538 states. [2022-07-21 13:56:55,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10538 to 10538. [2022-07-21 13:56:55,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10538 states, 7672 states have (on average 1.3574035453597497) internal successors, (10414), 7682 states have internal predecessors, (10414), 2358 states have call successors, (2358), 506 states have call predecessors, (2358), 505 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-21 13:56:55,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10538 states to 10538 states and 15126 transitions. [2022-07-21 13:56:55,608 INFO L78 Accepts]: Start accepts. Automaton has 10538 states and 15126 transitions. Word has length 321 [2022-07-21 13:56:55,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:55,609 INFO L495 AbstractCegarLoop]: Abstraction has 10538 states and 15126 transitions. [2022-07-21 13:56:55,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 13:56:55,609 INFO L276 IsEmpty]: Start isEmpty. Operand 10538 states and 15126 transitions. [2022-07-21 13:56:55,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-07-21 13:56:55,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:55,622 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 17, 17, 17, 17, 17, 17, 11, 10, 10, 6, 6, 6, 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, 1, 1] [2022-07-21 13:56:55,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-21 13:56:55,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:56:55,836 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:55,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:55,836 INFO L85 PathProgramCache]: Analyzing trace with hash 234180815, now seen corresponding path program 1 times [2022-07-21 13:56:55,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:55,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578552781] [2022-07-21 13:56:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:55,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:55,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:55,839 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:55,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-21 13:56:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:56,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 2094 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 13:56:56,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1859 backedges. 311 proven. 3 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2022-07-21 13:56:57,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1859 backedges. 53 proven. 18 refuted. 0 times theorem prover too weak. 1788 trivial. 0 not checked. [2022-07-21 13:56:58,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:58,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578552781] [2022-07-21 13:56:58,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578552781] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 13:56:58,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 13:56:58,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 22 [2022-07-21 13:56:58,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224202179] [2022-07-21 13:56:58,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 13:56:58,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 13:56:58,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:58,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 13:56:58,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-07-21 13:56:58,152 INFO L87 Difference]: Start difference. First operand 10538 states and 15126 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, (63), 3 states have call predecessors, (63), 8 states have return successors, (62), 7 states have call predecessors, (62), 6 states have call successors, (62) [2022-07-21 13:57:11,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:11,404 INFO L93 Difference]: Finished difference Result 25740 states and 36905 transitions. [2022-07-21 13:57:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 13:57:11,404 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, (63), 3 states have call predecessors, (63), 8 states have return successors, (62), 7 states have call predecessors, (62), 6 states have call successors, (62) Word has length 362 [2022-07-21 13:57:11,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:11,461 INFO L225 Difference]: With dead ends: 25740 [2022-07-21 13:57:11,461 INFO L226 Difference]: Without dead ends: 16592 [2022-07-21 13:57:11,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 703 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2022-07-21 13:57:11,498 INFO L413 NwaCegarLoop]: 4714 mSDtfsCounter, 7758 mSDsluCounter, 61228 mSDsCounter, 0 mSdLazyCounter, 5508 mSolverCounterSat, 1209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7943 SdHoareTripleChecker+Valid, 65942 SdHoareTripleChecker+Invalid, 6717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1209 IncrementalHoareTripleChecker+Valid, 5508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:11,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7943 Valid, 65942 Invalid, 6717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1209 Valid, 5508 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-07-21 13:57:11,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16592 states. [2022-07-21 13:57:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16592 to 13539. [2022-07-21 13:57:12,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13539 states, 9863 states have (on average 1.3575991077765386) internal successors, (13390), 9873 states have internal predecessors, (13390), 3022 states have call successors, (3022), 652 states have call predecessors, (3022), 651 states have return successors, (3018), 3013 states have call predecessors, (3018), 3018 states have call successors, (3018) [2022-07-21 13:57:12,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13539 states to 13539 states and 19430 transitions. [2022-07-21 13:57:12,203 INFO L78 Accepts]: Start accepts. Automaton has 13539 states and 19430 transitions. Word has length 362 [2022-07-21 13:57:12,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:12,204 INFO L495 AbstractCegarLoop]: Abstraction has 13539 states and 19430 transitions. [2022-07-21 13:57:12,205 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, (63), 3 states have call predecessors, (63), 8 states have return successors, (62), 7 states have call predecessors, (62), 6 states have call successors, (62) [2022-07-21 13:57:12,205 INFO L276 IsEmpty]: Start isEmpty. Operand 13539 states and 19430 transitions. [2022-07-21 13:57:12,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-07-21 13:57:12,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:12,217 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 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] [2022-07-21 13:57:12,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-21 13:57:12,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:57:12,435 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:57:12,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:12,436 INFO L85 PathProgramCache]: Analyzing trace with hash 268272763, now seen corresponding path program 1 times [2022-07-21 13:57:12,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:12,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018761203] [2022-07-21 13:57:12,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:12,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:12,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:12,439 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:57:12,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-21 13:57:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:13,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 2013 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:57:13,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1662 trivial. 0 not checked. [2022-07-21 13:57:14,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:57:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1662 trivial. 0 not checked. [2022-07-21 13:57:14,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:14,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018761203] [2022-07-21 13:57:14,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018761203] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:57:14,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:57:14,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:57:14,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258516886] [2022-07-21 13:57:14,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:14,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:57:14,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:14,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:57:14,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:57:14,805 INFO L87 Difference]: Start difference. First operand 13539 states and 19430 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 13:57:15,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:15,176 INFO L93 Difference]: Finished difference Result 13545 states and 19435 transitions. [2022-07-21 13:57:15,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:57:15,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 326 [2022-07-21 13:57:15,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:15,222 INFO L225 Difference]: With dead ends: 13545 [2022-07-21 13:57:15,222 INFO L226 Difference]: Without dead ends: 13541 [2022-07-21 13:57:15,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:57:15,233 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:15,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2386 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:57:15,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13541 states. [2022-07-21 13:57:15,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13541 to 13541. [2022-07-21 13:57:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13541 states, 9865 states have (on average 1.3574252407501266) internal successors, (13391), 9874 states have internal predecessors, (13391), 3022 states have call successors, (3022), 653 states have call predecessors, (3022), 651 states have return successors, (3018), 3013 states have call predecessors, (3018), 3018 states have call successors, (3018) [2022-07-21 13:57:15,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13541 states to 13541 states and 19431 transitions. [2022-07-21 13:57:15,932 INFO L78 Accepts]: Start accepts. Automaton has 13541 states and 19431 transitions. Word has length 326 [2022-07-21 13:57:15,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:15,932 INFO L495 AbstractCegarLoop]: Abstraction has 13541 states and 19431 transitions. [2022-07-21 13:57:15,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 13:57:15,933 INFO L276 IsEmpty]: Start isEmpty. Operand 13541 states and 19431 transitions. [2022-07-21 13:57:15,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-07-21 13:57:15,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:15,945 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 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] [2022-07-21 13:57:15,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-21 13:57:16,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:57:16,160 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:57:16,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:16,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1118187353, now seen corresponding path program 1 times [2022-07-21 13:57:16,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:16,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108323138] [2022-07-21 13:57:16,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:16,162 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:16,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:16,163 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:57:16,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-21 13:57:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:17,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:57:17,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1724 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1702 trivial. 0 not checked. [2022-07-21 13:57:18,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:57:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1724 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1702 trivial. 0 not checked. [2022-07-21 13:57:18,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:18,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108323138] [2022-07-21 13:57:18,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108323138] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:57:18,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:57:18,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:57:18,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135082208] [2022-07-21 13:57:18,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:18,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:57:18,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:18,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:57:18,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:57:18,414 INFO L87 Difference]: Start difference. First operand 13541 states and 19431 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 13:57:18,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:18,933 INFO L93 Difference]: Finished difference Result 13541 states and 19431 transitions. [2022-07-21 13:57:18,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:57:18,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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 331 [2022-07-21 13:57:18,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:18,980 INFO L225 Difference]: With dead ends: 13541 [2022-07-21 13:57:18,981 INFO L226 Difference]: Without dead ends: 13428 [2022-07-21 13:57:18,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:57:18,991 INFO L413 NwaCegarLoop]: 2465 mSDtfsCounter, 2381 mSDsluCounter, 4914 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2381 SdHoareTripleChecker+Valid, 7379 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:18,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2381 Valid, 7379 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:57:19,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13428 states. [2022-07-21 13:57:19,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13428 to 10471. [2022-07-21 13:57:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10471 states, 7634 states have (on average 1.3582656536547026) internal successors, (10369), 7637 states have internal predecessors, (10369), 2337 states have call successors, (2337), 498 states have call predecessors, (2337), 498 states have return successors, (2337), 2335 states have call predecessors, (2337), 2337 states have call successors, (2337) [2022-07-21 13:57:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10471 states to 10471 states and 15043 transitions. [2022-07-21 13:57:19,517 INFO L78 Accepts]: Start accepts. Automaton has 10471 states and 15043 transitions. Word has length 331 [2022-07-21 13:57:19,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:19,518 INFO L495 AbstractCegarLoop]: Abstraction has 10471 states and 15043 transitions. [2022-07-21 13:57:19,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 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) [2022-07-21 13:57:19,518 INFO L276 IsEmpty]: Start isEmpty. Operand 10471 states and 15043 transitions. [2022-07-21 13:57:19,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-07-21 13:57:19,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:19,528 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 17, 17, 17, 17, 17, 17, 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] [2022-07-21 13:57:19,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-21 13:57:19,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:57:19,735 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:57:19,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:19,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1541849949, now seen corresponding path program 1 times [2022-07-21 13:57:19,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:19,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153764506] [2022-07-21 13:57:19,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:19,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:19,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:19,738 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:57:19,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-21 13:57:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:20,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:57:20,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-07-21 13:57:20,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:57:20,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:20,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153764506] [2022-07-21 13:57:20,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153764506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:57:20,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:57:20,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:57:20,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334211765] [2022-07-21 13:57:20,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:20,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:57:20,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:20,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:57:20,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:57:20,754 INFO L87 Difference]: Start difference. First operand 10471 states and 15043 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-21 13:57:21,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:21,411 INFO L93 Difference]: Finished difference Result 22501 states and 32321 transitions. [2022-07-21 13:57:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:57:21,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 342 [2022-07-21 13:57:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:21,441 INFO L225 Difference]: With dead ends: 22501 [2022-07-21 13:57:21,442 INFO L226 Difference]: Without dead ends: 13432 [2022-07-21 13:57:21,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:57:21,459 INFO L413 NwaCegarLoop]: 4640 mSDtfsCounter, 2272 mSDsluCounter, 2387 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2272 SdHoareTripleChecker+Valid, 7027 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 [2022-07-21 13:57:21,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2272 Valid, 7027 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:57:21,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13432 states. [2022-07-21 13:57:21,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13432 to 10471. [2022-07-21 13:57:21,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10471 states, 7634 states have (on average 1.3582656536547026) internal successors, (10369), 7637 states have internal predecessors, (10369), 2337 states have call successors, (2337), 498 states have call predecessors, (2337), 498 states have return successors, (2337), 2335 states have call predecessors, (2337), 2337 states have call successors, (2337) [2022-07-21 13:57:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10471 states to 10471 states and 15043 transitions. [2022-07-21 13:57:21,972 INFO L78 Accepts]: Start accepts. Automaton has 10471 states and 15043 transitions. Word has length 342 [2022-07-21 13:57:21,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:21,972 INFO L495 AbstractCegarLoop]: Abstraction has 10471 states and 15043 transitions. [2022-07-21 13:57:21,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-21 13:57:21,973 INFO L276 IsEmpty]: Start isEmpty. Operand 10471 states and 15043 transitions. [2022-07-21 13:57:21,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-07-21 13:57:21,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:21,982 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 17, 17, 17, 17, 17, 17, 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] [2022-07-21 13:57:22,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-07-21 13:57:22,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:57:22,183 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)] === [2022-07-21 13:57:22,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:22,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2102549727, now seen corresponding path program 1 times [2022-07-21 13:57:22,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:22,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490742851] [2022-07-21 13:57:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:22,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:22,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:22,186 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:57:22,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-21 13:57:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:23,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:57:23,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:23,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-07-21 13:57:23,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:57:23,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:23,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490742851] [2022-07-21 13:57:23,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490742851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:57:23,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:57:23,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:57:23,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145140054] [2022-07-21 13:57:23,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:23,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:57:23,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:23,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:57:23,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:57:23,233 INFO L87 Difference]: Start difference. First operand 10471 states and 15043 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-21 13:57:23,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:23,996 INFO L93 Difference]: Finished difference Result 22509 states and 32337 transitions. [2022-07-21 13:57:23,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:57:23,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 342 [2022-07-21 13:57:23,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:24,031 INFO L225 Difference]: With dead ends: 22509 [2022-07-21 13:57:24,032 INFO L226 Difference]: Without dead ends: 13446 [2022-07-21 13:57:24,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:57:24,053 INFO L413 NwaCegarLoop]: 4691 mSDtfsCounter, 2278 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 7074 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:24,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 7074 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:57:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13446 states. [2022-07-21 13:57:24,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13446 to 13442. [2022-07-21 13:57:24,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13442 states, 9807 states have (on average 1.3589272968287958) internal successors, (13327), 9810 states have internal predecessors, (13327), 2995 states have call successors, (2995), 638 states have call predecessors, (2995), 638 states have return successors, (2995), 2993 states have call predecessors, (2995), 2995 states have call successors, (2995) [2022-07-21 13:57:24,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13442 states to 13442 states and 19317 transitions. [2022-07-21 13:57:24,571 INFO L78 Accepts]: Start accepts. Automaton has 13442 states and 19317 transitions. Word has length 342 [2022-07-21 13:57:24,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:24,572 INFO L495 AbstractCegarLoop]: Abstraction has 13442 states and 19317 transitions. [2022-07-21 13:57:24,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-21 13:57:24,572 INFO L276 IsEmpty]: Start isEmpty. Operand 13442 states and 19317 transitions. [2022-07-21 13:57:24,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-07-21 13:57:24,581 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:24,581 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 17, 17, 17, 17, 17, 17, 7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-21 13:57:24,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-21 13:57:24,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:57:24,782 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:57:24,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:24,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1034647165, now seen corresponding path program 1 times [2022-07-21 13:57:24,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:24,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938572310] [2022-07-21 13:57:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:24,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:24,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:24,785 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:57:24,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-21 13:57:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:25,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 2107 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:57:25,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1876 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 1789 trivial. 0 not checked. [2022-07-21 13:57:25,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:57:25,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:25,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938572310] [2022-07-21 13:57:25,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938572310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:57:25,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:57:25,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:57:25,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123042405] [2022-07-21 13:57:25,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:25,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:57:25,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:25,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:57:25,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:57:25,823 INFO L87 Difference]: Start difference. First operand 13442 states and 19317 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-21 13:57:26,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:26,702 INFO L93 Difference]: Finished difference Result 31264 states and 44935 transitions. [2022-07-21 13:57:26,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:57:26,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 364 [2022-07-21 13:57:26,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:26,758 INFO L225 Difference]: With dead ends: 31264 [2022-07-21 13:57:26,758 INFO L226 Difference]: Without dead ends: 19230 [2022-07-21 13:57:26,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:57:26,794 INFO L413 NwaCegarLoop]: 4454 mSDtfsCounter, 2107 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2107 SdHoareTripleChecker+Valid, 6782 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:26,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2107 Valid, 6782 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:57:26,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19230 states. [2022-07-21 13:57:27,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19230 to 19224. [2022-07-21 13:57:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19224 states, 14030 states have (on average 1.3610121168923734) internal successors, (19095), 14035 states have internal predecessors, (19095), 4268 states have call successors, (4268), 924 states have call predecessors, (4268), 924 states have return successors, (4268), 4264 states have call predecessors, (4268), 4268 states have call successors, (4268) [2022-07-21 13:57:27,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19224 states to 19224 states and 27631 transitions. [2022-07-21 13:57:27,560 INFO L78 Accepts]: Start accepts. Automaton has 19224 states and 27631 transitions. Word has length 364 [2022-07-21 13:57:27,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:27,560 INFO L495 AbstractCegarLoop]: Abstraction has 19224 states and 27631 transitions. [2022-07-21 13:57:27,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-21 13:57:27,560 INFO L276 IsEmpty]: Start isEmpty. Operand 19224 states and 27631 transitions. [2022-07-21 13:57:27,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-07-21 13:57:27,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:27,575 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:57:27,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-21 13:57:27,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:57:27,776 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:57:27,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1515053959, now seen corresponding path program 1 times [2022-07-21 13:57:27,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:27,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308524062] [2022-07-21 13:57:27,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:27,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:27,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:27,812 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:57:27,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-21 13:57:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:28,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:57:28,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-21 13:57:28,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:57:28,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:28,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308524062] [2022-07-21 13:57:28,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308524062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:57:28,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:57:28,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 13:57:28,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656459718] [2022-07-21 13:57:28,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:28,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:57:28,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:28,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:57:28,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:57:28,870 INFO L87 Difference]: Start difference. First operand 19224 states and 27631 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 13:57:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:30,277 INFO L93 Difference]: Finished difference Result 42636 states and 61271 transitions. [2022-07-21 13:57:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:57:30,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 389 [2022-07-21 13:57:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:30,359 INFO L225 Difference]: With dead ends: 42636 [2022-07-21 13:57:30,359 INFO L226 Difference]: Without dead ends: 24820 [2022-07-21 13:57:30,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:57:30,402 INFO L413 NwaCegarLoop]: 4453 mSDtfsCounter, 2033 mSDsluCounter, 11211 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 15664 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:30,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 15664 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:57:30,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24820 states. [2022-07-21 13:57:31,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24820 to 24806. [2022-07-21 13:57:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24806 states, 18057 states have (on average 1.3611895663731517) internal successors, (24579), 18064 states have internal predecessors, (24579), 5537 states have call successors, (5537), 1206 states have call predecessors, (5537), 1210 states have return successors, (5541), 5535 states have call predecessors, (5541), 5537 states have call successors, (5541) [2022-07-21 13:57:31,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24806 states to 24806 states and 35657 transitions. [2022-07-21 13:57:31,412 INFO L78 Accepts]: Start accepts. Automaton has 24806 states and 35657 transitions. Word has length 389 [2022-07-21 13:57:31,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:31,413 INFO L495 AbstractCegarLoop]: Abstraction has 24806 states and 35657 transitions. [2022-07-21 13:57:31,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 13:57:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand 24806 states and 35657 transitions. [2022-07-21 13:57:31,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-07-21 13:57:31,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:31,431 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:57:31,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-21 13:57:31,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:57:31,643 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)] === [2022-07-21 13:57:31,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash 291617498, now seen corresponding path program 1 times [2022-07-21 13:57:31,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:31,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249148342] [2022-07-21 13:57:31,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:31,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:31,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:31,647 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) [2022-07-21 13:57:31,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-21 13:57:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:32,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 2144 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:57:32,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:32,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-21 13:57:32,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:57:32,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:32,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249148342] [2022-07-21 13:57:32,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249148342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:57:32,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:57:32,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 13:57:32,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003168584] [2022-07-21 13:57:32,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:32,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:57:32,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:32,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:57:32,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:57:32,710 INFO L87 Difference]: Start difference. First operand 24806 states and 35657 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 13:57:34,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:34,017 INFO L93 Difference]: Finished difference Result 53808 states and 77339 transitions. [2022-07-21 13:57:34,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:57:34,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 390 [2022-07-21 13:57:34,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:34,131 INFO L225 Difference]: With dead ends: 53808 [2022-07-21 13:57:34,131 INFO L226 Difference]: Without dead ends: 30410 [2022-07-21 13:57:34,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:57:34,192 INFO L413 NwaCegarLoop]: 4457 mSDtfsCounter, 2035 mSDsluCounter, 11217 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 15674 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:34,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 15674 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:57:34,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30410 states. [2022-07-21 13:57:35,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30410 to 30396. [2022-07-21 13:57:35,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30396 states, 22092 states have (on average 1.3611714647836322) internal successors, (30071), 22101 states have internal predecessors, (30071), 6806 states have call successors, (6806), 1488 states have call predecessors, (6806), 1496 states have return successors, (6814), 6806 states have call predecessors, (6814), 6806 states have call successors, (6814) [2022-07-21 13:57:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30396 states to 30396 states and 43691 transitions. [2022-07-21 13:57:35,734 INFO L78 Accepts]: Start accepts. Automaton has 30396 states and 43691 transitions. Word has length 390 [2022-07-21 13:57:35,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:35,735 INFO L495 AbstractCegarLoop]: Abstraction has 30396 states and 43691 transitions. [2022-07-21 13:57:35,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 13:57:35,735 INFO L276 IsEmpty]: Start isEmpty. Operand 30396 states and 43691 transitions. [2022-07-21 13:57:35,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-07-21 13:57:35,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:35,757 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:57:35,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-07-21 13:57:35,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:57:35,972 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:57:35,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:35,972 INFO L85 PathProgramCache]: Analyzing trace with hash -419574428, now seen corresponding path program 1 times [2022-07-21 13:57:35,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:35,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116670244] [2022-07-21 13:57:35,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:35,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:35,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:35,976 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:57:35,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-21 13:57:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:37,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 2145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:57:37,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-21 13:57:37,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:57:37,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:37,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116670244] [2022-07-21 13:57:37,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116670244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:57:37,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:57:37,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 13:57:37,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12839735] [2022-07-21 13:57:37,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:37,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:57:37,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:37,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:57:37,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:57:37,135 INFO L87 Difference]: Start difference. First operand 30396 states and 43691 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 13:57:38,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:38,899 INFO L93 Difference]: Finished difference Result 65000 states and 93431 transitions. [2022-07-21 13:57:38,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:57:38,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 391 [2022-07-21 13:57:38,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:38,995 INFO L225 Difference]: With dead ends: 65000 [2022-07-21 13:57:38,995 INFO L226 Difference]: Without dead ends: 36012 [2022-07-21 13:57:39,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:57:39,055 INFO L413 NwaCegarLoop]: 4456 mSDtfsCounter, 2046 mSDsluCounter, 11204 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 15660 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:39,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2046 Valid, 15660 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 13:57:39,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36012 states. [2022-07-21 13:57:40,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36012 to 35998. [2022-07-21 13:57:40,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35998 states, 26139 states have (on average 1.360993151995103) internal successors, (35575), 26150 states have internal predecessors, (35575), 8075 states have call successors, (8075), 1770 states have call predecessors, (8075), 1782 states have return successors, (8087), 8077 states have call predecessors, (8087), 8075 states have call successors, (8087) [2022-07-21 13:57:40,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35998 states to 35998 states and 51737 transitions. [2022-07-21 13:57:40,664 INFO L78 Accepts]: Start accepts. Automaton has 35998 states and 51737 transitions. Word has length 391 [2022-07-21 13:57:40,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:40,665 INFO L495 AbstractCegarLoop]: Abstraction has 35998 states and 51737 transitions. [2022-07-21 13:57:40,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 13:57:40,665 INFO L276 IsEmpty]: Start isEmpty. Operand 35998 states and 51737 transitions. [2022-07-21 13:57:40,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-07-21 13:57:40,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:40,683 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:57:40,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-21 13:57:40,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:57:40,884 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:57:40,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:40,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1863912343, now seen corresponding path program 1 times [2022-07-21 13:57:40,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:40,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588968642] [2022-07-21 13:57:40,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:40,887 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:40,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:40,888 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:57:41,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-21 13:57:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:42,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:57:42,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:42,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-21 13:57:42,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:57:42,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:42,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588968642] [2022-07-21 13:57:42,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588968642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:57:42,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:57:42,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 13:57:42,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236339324] [2022-07-21 13:57:42,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:42,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:57:42,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:42,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:57:42,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:57:42,149 INFO L87 Difference]: Start difference. First operand 35998 states and 51737 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 13:57:44,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:44,198 INFO L93 Difference]: Finished difference Result 76208 states and 109531 transitions. [2022-07-21 13:57:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:57:44,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 392 [2022-07-21 13:57:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:44,315 INFO L225 Difference]: With dead ends: 76208 [2022-07-21 13:57:44,315 INFO L226 Difference]: Without dead ends: 41618 [2022-07-21 13:57:44,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:57:44,383 INFO L413 NwaCegarLoop]: 4456 mSDtfsCounter, 2037 mSDsluCounter, 11213 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 15669 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:44,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 15669 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 13:57:44,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41618 states. [2022-07-21 13:57:46,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41618 to 41604. [2022-07-21 13:57:46,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41604 states, 30190 states have (on average 1.3608148393507784) internal successors, (41083), 30203 states have internal predecessors, (41083), 9344 states have call successors, (9344), 2052 states have call predecessors, (9344), 2068 states have return successors, (9360), 9348 states have call predecessors, (9360), 9344 states have call successors, (9360) [2022-07-21 13:57:46,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41604 states to 41604 states and 59787 transitions. [2022-07-21 13:57:46,478 INFO L78 Accepts]: Start accepts. Automaton has 41604 states and 59787 transitions. Word has length 392 [2022-07-21 13:57:46,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:46,479 INFO L495 AbstractCegarLoop]: Abstraction has 41604 states and 59787 transitions. [2022-07-21 13:57:46,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 13:57:46,479 INFO L276 IsEmpty]: Start isEmpty. Operand 41604 states and 59787 transitions. [2022-07-21 13:57:46,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-07-21 13:57:46,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:46,502 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:57:46,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-07-21 13:57:46,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:57:46,716 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:57:46,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:46,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1801809087, now seen corresponding path program 1 times [2022-07-21 13:57:46,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:46,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803939373] [2022-07-21 13:57:46,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:46,718 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:46,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:46,719 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:57:46,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-21 13:57:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:47,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 2147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:57:47,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:47,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-21 13:57:47,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:57:47,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:47,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803939373] [2022-07-21 13:57:47,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803939373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:57:47,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:57:47,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 13:57:47,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060444478] [2022-07-21 13:57:47,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:47,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:57:47,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:47,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:57:47,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:57:47,789 INFO L87 Difference]: Start difference. First operand 41604 states and 59787 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 13:57:49,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:49,767 INFO L93 Difference]: Finished difference Result 87424 states and 125639 transitions. [2022-07-21 13:57:49,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:57:49,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 393 [2022-07-21 13:57:49,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:49,910 INFO L225 Difference]: With dead ends: 87424 [2022-07-21 13:57:49,910 INFO L226 Difference]: Without dead ends: 47228 [2022-07-21 13:57:49,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:57:49,986 INFO L413 NwaCegarLoop]: 4456 mSDtfsCounter, 2035 mSDsluCounter, 11215 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 15671 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:49,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 15671 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 13:57:50,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47228 states. [2022-07-21 13:57:52,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47228 to 47214. [2022-07-21 13:57:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47214 states, 34245 states have (on average 1.360636589283107) internal successors, (46595), 34260 states have internal predecessors, (46595), 10613 states have call successors, (10613), 2334 states have call predecessors, (10613), 2354 states have return successors, (10633), 10619 states have call predecessors, (10633), 10613 states have call successors, (10633) [2022-07-21 13:57:52,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47214 states to 47214 states and 67841 transitions. [2022-07-21 13:57:52,231 INFO L78 Accepts]: Start accepts. Automaton has 47214 states and 67841 transitions. Word has length 393 [2022-07-21 13:57:52,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:52,232 INFO L495 AbstractCegarLoop]: Abstraction has 47214 states and 67841 transitions. [2022-07-21 13:57:52,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 13:57:52,233 INFO L276 IsEmpty]: Start isEmpty. Operand 47214 states and 67841 transitions. [2022-07-21 13:57:52,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-07-21 13:57:52,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:52,259 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:57:52,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-21 13:57:52,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:57:52,480 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:57:52,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:52,480 INFO L85 PathProgramCache]: Analyzing trace with hash -914423724, now seen corresponding path program 1 times [2022-07-21 13:57:52,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:52,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200282534] [2022-07-21 13:57:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:52,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:52,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:52,483 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:57:52,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-21 13:57:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:53,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 2148 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:57:53,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:53,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-21 13:57:53,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:57:53,728 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:53,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200282534] [2022-07-21 13:57:53,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200282534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:57:53,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:57:53,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 13:57:53,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839922448] [2022-07-21 13:57:53,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:53,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:57:53,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:53,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:57:53,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:57:53,729 INFO L87 Difference]: Start difference. First operand 47214 states and 67841 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 13:57:56,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:56,018 INFO L93 Difference]: Finished difference Result 98648 states and 141755 transitions. [2022-07-21 13:57:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:57:56,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 394 [2022-07-21 13:57:56,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:56,205 INFO L225 Difference]: With dead ends: 98648 [2022-07-21 13:57:56,205 INFO L226 Difference]: Without dead ends: 52842 [2022-07-21 13:57:56,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:57:56,320 INFO L413 NwaCegarLoop]: 4456 mSDtfsCounter, 2035 mSDsluCounter, 11215 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 15671 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:56,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 15671 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 13:57:56,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52842 states. [2022-07-21 13:57:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52842 to 52828. [2022-07-21 13:57:58,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52828 states, 38304 states have (on average 1.3604584377610693) internal successors, (52111), 38321 states have internal predecessors, (52111), 11882 states have call successors, (11882), 2616 states have call predecessors, (11882), 2640 states have return successors, (11906), 11890 states have call predecessors, (11906), 11882 states have call successors, (11906) [2022-07-21 13:57:58,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52828 states to 52828 states and 75899 transitions. [2022-07-21 13:57:58,744 INFO L78 Accepts]: Start accepts. Automaton has 52828 states and 75899 transitions. Word has length 394 [2022-07-21 13:57:58,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:58,744 INFO L495 AbstractCegarLoop]: Abstraction has 52828 states and 75899 transitions. [2022-07-21 13:57:58,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 13:57:58,745 INFO L276 IsEmpty]: Start isEmpty. Operand 52828 states and 75899 transitions. [2022-07-21 13:57:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-07-21 13:57:58,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:58,766 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:57:58,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-07-21 13:57:58,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:57:58,967 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:57:58,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:58,968 INFO L85 PathProgramCache]: Analyzing trace with hash -614648546, now seen corresponding path program 1 times [2022-07-21 13:57:58,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:58,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785806275] [2022-07-21 13:57:58,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:58,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:58,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:58,970 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:57:58,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-21 13:57:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:59,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 2149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:57:59,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:58:00,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-21 13:58:00,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:58:00,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:58:00,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785806275] [2022-07-21 13:58:00,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785806275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:58:00,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:58:00,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 13:58:00,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125157797] [2022-07-21 13:58:00,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:58:00,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:58:00,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:58:00,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:58:00,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:58:00,090 INFO L87 Difference]: Start difference. First operand 52828 states and 75899 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 13:58:02,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:58:02,671 INFO L93 Difference]: Finished difference Result 109880 states and 157879 transitions. [2022-07-21 13:58:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:58:02,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 395 [2022-07-21 13:58:02,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:58:03,029 INFO L225 Difference]: With dead ends: 109880 [2022-07-21 13:58:03,029 INFO L226 Difference]: Without dead ends: 58460 [2022-07-21 13:58:03,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:58:03,147 INFO L413 NwaCegarLoop]: 4456 mSDtfsCounter, 2035 mSDsluCounter, 11215 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 15671 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 13:58:03,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 15671 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 13:58:03,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58460 states. [2022-07-21 13:58:05,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58460 to 58446. [2022-07-21 13:58:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58446 states, 42367 states have (on average 1.3602804069204806) internal successors, (57631), 42386 states have internal predecessors, (57631), 13151 states have call successors, (13151), 2898 states have call predecessors, (13151), 2926 states have return successors, (13179), 13161 states have call predecessors, (13179), 13151 states have call successors, (13179) [2022-07-21 13:58:05,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58446 states to 58446 states and 83961 transitions. [2022-07-21 13:58:05,667 INFO L78 Accepts]: Start accepts. Automaton has 58446 states and 83961 transitions. Word has length 395 [2022-07-21 13:58:05,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:58:05,668 INFO L495 AbstractCegarLoop]: Abstraction has 58446 states and 83961 transitions. [2022-07-21 13:58:05,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-21 13:58:05,668 INFO L276 IsEmpty]: Start isEmpty. Operand 58446 states and 83961 transitions. [2022-07-21 13:58:05,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-07-21 13:58:05,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:58:05,691 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:58:05,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-21 13:58:05,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:58:05,895 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:58:05,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:58:05,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1350919919, now seen corresponding path program 1 times [2022-07-21 13:58:05,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:58:05,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456934145] [2022-07-21 13:58:05,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:58:05,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:58:05,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:58:05,898 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:58:05,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-21 13:58:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:58:06,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 2150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:58:06,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:58:06,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-21 13:58:06,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:58:06,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:58:06,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456934145] [2022-07-21 13:58:06,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456934145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:58:06,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:58:06,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 13:58:06,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789544235] [2022-07-21 13:58:06,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:58:06,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:58:06,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:58:06,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:58:06,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:58:06,987 INFO L87 Difference]: Start difference. First operand 58446 states and 83961 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34)