./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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-smsc95xx.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 13:55:17,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 13:55:17,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 13:55:17,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 13:55:17,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 13:55:17,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 13:55:17,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 13:55:17,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 13:55:17,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 13:55:17,618 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 13:55:17,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 13:55:17,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 13:55:17,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 13:55:17,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 13:55:17,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 13:55:17,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 13:55:17,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 13:55:17,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 13:55:17,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 13:55:17,627 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 13:55:17,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 13:55:17,632 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 13:55:17,633 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 13:55:17,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 13:55:17,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 13:55:17,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 13:55:17,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 13:55:17,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 13:55:17,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 13:55:17,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 13:55:17,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 13:55:17,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 13:55:17,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 13:55:17,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 13:55:17,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 13:55:17,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 13:55:17,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 13:55:17,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 13:55:17,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 13:55:17,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 13:55:17,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 13:55:17,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 13:55:17,659 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 13:55:17,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 13:55:17,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 13:55:17,660 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 13:55:17,661 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 13:55:17,661 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 13:55:17,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 13:55:17,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 13:55:17,661 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 13:55:17,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 13:55:17,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 13:55:17,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 13:55:17,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 13:55:17,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 13:55:17,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 13:55:17,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 13:55:17,671 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 13:55:17,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 13:55:17,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 13:55:17,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 13:55:17,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 13:55:17,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 13:55:17,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 13:55:17,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 13:55:17,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 13:55:17,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 13:55:17,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 13:55:17,673 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 13:55:17,673 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 13:55:17,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 13:55:17,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 [2022-07-21 13:55:17,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 13:55:17,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 13:55:17,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 13:55:17,988 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 13:55:17,996 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 13:55:17,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2022-07-21 13:55:18,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/165061245/0675862cd7364ffd9e790fdf8e27cffb/FLAGfdf3f0125 [2022-07-21 13:55:18,670 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 13:55:18,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2022-07-21 13:55:18,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/165061245/0675862cd7364ffd9e790fdf8e27cffb/FLAGfdf3f0125 [2022-07-21 13:55:18,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/165061245/0675862cd7364ffd9e790fdf8e27cffb [2022-07-21 13:55:18,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 13:55:18,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 13:55:18,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 13:55:18,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 13:55:18,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 13:55:18,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:55:18" (1/1) ... [2022-07-21 13:55:18,800 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc73c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:18, skipping insertion in model container [2022-07-21 13:55:18,800 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:55:18" (1/1) ... [2022-07-21 13:55:18,805 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 13:55:18,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 13:55:20,395 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2022-07-21 13:55:20,397 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2022-07-21 13:55:20,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2022-07-21 13:55:20,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2022-07-21 13:55:20,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:55:20,446 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 13:55:20,541 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 13:55:20,546 INFO L158 Benchmark]: Toolchain (without parser) took 1749.78ms. Allocated memory was 60.8MB in the beginning and 161.5MB in the end (delta: 100.7MB). Free memory was 38.0MB in the beginning and 79.2MB in the end (delta: -41.3MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-07-21 13:55:20,547 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory was 42.6MB in the beginning and 42.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 13:55:20,548 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1748.51ms. Allocated memory was 60.8MB in the beginning and 161.5MB in the end (delta: 100.7MB). Free memory was 37.8MB in the beginning and 79.2MB in the end (delta: -41.5MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-07-21 13:55:20,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory was 42.6MB in the beginning and 42.6MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1748.51ms. Allocated memory was 60.8MB in the beginning and 161.5MB in the end (delta: 100.7MB). Free memory was 37.8MB in the beginning and 79.2MB in the end (delta: -41.5MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 13:55:22,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 13:55:22,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 13:55:22,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 13:55:22,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 13:55:22,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 13:55:22,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 13:55:22,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 13:55:22,220 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 13:55:22,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 13:55:22,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 13:55:22,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 13:55:22,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 13:55:22,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 13:55:22,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 13:55:22,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 13:55:22,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 13:55:22,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 13:55:22,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 13:55:22,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 13:55:22,247 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 13:55:22,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 13:55:22,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 13:55:22,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 13:55:22,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 13:55:22,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 13:55:22,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 13:55:22,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 13:55:22,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 13:55:22,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 13:55:22,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 13:55:22,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 13:55:22,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 13:55:22,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 13:55:22,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 13:55:22,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 13:55:22,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 13:55:22,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 13:55:22,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 13:55:22,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 13:55:22,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 13:55:22,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 13:55:22,271 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 13:55:22,296 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 13:55:22,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 13:55:22,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 13:55:22,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 13:55:22,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 13:55:22,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 13:55:22,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 13:55:22,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 13:55:22,298 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 13:55:22,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 13:55:22,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 13:55:22,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 13:55:22,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 13:55:22,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 13:55:22,300 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 13:55:22,300 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 13:55:22,301 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 13:55:22,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 13:55:22,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 13:55:22,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 13:55:22,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 13:55:22,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 13:55:22,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 13:55:22,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 13:55:22,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 13:55:22,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 13:55:22,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 13:55:22,302 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 13:55:22,303 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 13:55:22,303 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 13:55:22,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 13:55:22,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 13:55:22,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 13:55:22,304 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0fd6bb20819f4c1984e3b3e8e83ec7b86578d28f1c3e6d8ae5f0c954457512 [2022-07-21 13:55:22,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 13:55:22,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 13:55:22,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 13:55:22,574 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 13:55:22,574 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 13:55:22,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2022-07-21 13:55:22,625 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd916a786/595e2b3393994bfd90fc027c75cbb43c/FLAG120de5866 [2022-07-21 13:55:23,315 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 13:55:23,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2022-07-21 13:55:23,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd916a786/595e2b3393994bfd90fc027c75cbb43c/FLAG120de5866 [2022-07-21 13:55:23,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd916a786/595e2b3393994bfd90fc027c75cbb43c [2022-07-21 13:55:23,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 13:55:23,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 13:55:23,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 13:55:23,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 13:55:23,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 13:55:23,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:55:23" (1/1) ... [2022-07-21 13:55:23,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585dd344 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:23, skipping insertion in model container [2022-07-21 13:55:23,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:55:23" (1/1) ... [2022-07-21 13:55:23,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 13:55:23,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 13:55:25,368 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2022-07-21 13:55:25,370 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2022-07-21 13:55:25,370 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2022-07-21 13:55:25,371 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2022-07-21 13:55:25,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:55:25,433 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 13:55:25,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 13:55:25,702 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2022-07-21 13:55:25,703 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2022-07-21 13:55:25,703 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2022-07-21 13:55:25,704 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2022-07-21 13:55:25,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:55:25,729 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 13:55:25,964 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348095,348108] [2022-07-21 13:55:25,965 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348264,348277] [2022-07-21 13:55:25,965 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348431,348444] [2022-07-21 13:55:25,965 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i[348599,348612] [2022-07-21 13:55:25,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 13:55:26,236 INFO L208 MainTranslator]: Completed translation [2022-07-21 13:55:26,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:26 WrapperNode [2022-07-21 13:55:26,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 13:55:26,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 13:55:26,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 13:55:26,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 13:55:26,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:26" (1/1) ... [2022-07-21 13:55:26,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:26" (1/1) ... [2022-07-21 13:55:26,425 INFO L137 Inliner]: procedures = 406, calls = 2962, calls flagged for inlining = 179, calls inlined = 164, statements flattened = 5999 [2022-07-21 13:55:26,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 13:55:26,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 13:55:26,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 13:55:26,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 13:55:26,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:26" (1/1) ... [2022-07-21 13:55:26,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:26" (1/1) ... [2022-07-21 13:55:26,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:26" (1/1) ... [2022-07-21 13:55:26,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:26" (1/1) ... [2022-07-21 13:55:26,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:26" (1/1) ... [2022-07-21 13:55:26,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:26" (1/1) ... [2022-07-21 13:55:26,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:26" (1/1) ... [2022-07-21 13:55:26,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 13:55:26,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 13:55:26,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 13:55:26,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 13:55:26,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:26" (1/1) ... [2022-07-21 13:55:26,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 13:55:26,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 13:55:26,724 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 13:55:26,731 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 13:55:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 13:55:26,752 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 13:55:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_nway_reset [2022-07-21 13:55:26,752 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_nway_reset [2022-07-21 13:55:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_link_reset [2022-07-21 13:55:26,752 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_link_reset [2022-07-21 13:55:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 13:55:26,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 13:55:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure smsc_crc [2022-07-21 13:55:26,753 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc_crc [2022-07-21 13:55:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_ethtool_getregslen [2022-07-21 13:55:26,753 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_ethtool_getregslen [2022-07-21 13:55:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_mdio_write [2022-07-21 13:55:26,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_mdio_write [2022-07-21 13:55:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-21 13:55:26,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-21 13:55:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-07-21 13:55:26,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-07-21 13:55:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg_nopm [2022-07-21 13:55:26,754 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg_nopm [2022-07-21 13:55:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smsc95xx_driver_exit_6_2 [2022-07-21 13:55:26,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smsc95xx_driver_exit_6_2 [2022-07-21 13:55:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enable_phy_wakeup_interrupts [2022-07-21 13:55:26,755 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enable_phy_wakeup_interrupts [2022-07-21 13:55:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-21 13:55:26,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-07-21 13:55:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2022-07-21 13:55:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-21 13:55:26,755 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-21 13:55:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-21 13:55:26,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-21 13:55:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 13:55:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-21 13:55:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 13:55:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 13:55:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-21 13:55:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg [2022-07-21 13:55:26,757 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg [2022-07-21 13:55:26,757 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_rx_csum_offload [2022-07-21 13:55:26,757 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_rx_csum_offload [2022-07-21 13:55:26,757 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_reg_nopm [2022-07-21 13:55:26,758 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_reg_nopm [2022-07-21 13:55:26,758 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2022-07-21 13:55:26,758 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2022-07-21 13:55:26,758 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-07-21 13:55:26,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-07-21 13:55:26,759 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2022-07-21 13:55:26,759 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2022-07-21 13:55:26,759 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2022-07-21 13:55:26,759 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2022-07-21 13:55:26,759 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_write_nopm [2022-07-21 13:55:26,759 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_write_nopm [2022-07-21 13:55:26,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 13:55:26,760 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 13:55:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_ethtool_get_eeprom_len [2022-07-21 13:55:26,760 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_ethtool_get_eeprom_len [2022-07-21 13:55:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2022-07-21 13:55:26,760 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-07-21 13:55:26,760 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-07-21 13:55:26,761 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2022-07-21 13:55:26,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-21 13:55:26,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-21 13:55:26,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 13:55:26,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-07-21 13:55:26,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-07-21 13:55:26,761 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-07-21 13:55:26,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-07-21 13:55:26,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 13:55:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-21 13:55:26,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-21 13:55:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-21 13:55:26,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-21 13:55:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 13:55:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-21 13:55:26,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-21 13:55:26,763 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_start_rx_path [2022-07-21 13:55:26,763 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_start_rx_path [2022-07-21 13:55:26,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-21 13:55:26,763 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2022-07-21 13:55:26,763 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2022-07-21 13:55:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_write_reg [2022-07-21 13:55:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_write_reg [2022-07-21 13:55:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_set_features [2022-07-21 13:55:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_set_features [2022-07-21 13:55:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-07-21 13:55:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-07-21 13:55:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_wait_eeprom [2022-07-21 13:55:26,764 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_wait_eeprom [2022-07-21 13:55:26,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-21 13:55:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 13:55:26,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 13:55:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_read_reg [2022-07-21 13:55:26,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_read_reg [2022-07-21 13:55:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 13:55:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-21 13:55:26,765 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-21 13:55:26,765 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-21 13:55:26,766 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-21 13:55:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 13:55:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 13:55:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 13:55:26,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 13:55:26,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 13:55:26,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 13:55:26,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 13:55:26,769 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-21 13:55:26,769 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-21 13:55:26,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-21 13:55:26,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-21 13:55:26,770 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_reset [2022-07-21 13:55:26,770 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_reset [2022-07-21 13:55:26,770 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2022-07-21 13:55:26,774 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2022-07-21 13:55:26,774 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_mac_cr_lock_of_smsc95xx_priv [2022-07-21 13:55:26,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_mac_cr_lock_of_smsc95xx_priv [2022-07-21 13:55:26,774 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_reg [2022-07-21 13:55:26,774 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_reg [2022-07-21 13:55:26,774 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 13:55:26,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 13:55:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 13:55:26,775 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 13:55:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_write [2022-07-21 13:55:26,775 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_write [2022-07-21 13:55:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 13:55:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-21 13:55:26,775 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-21 13:55:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 13:55:26,775 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enter_suspend1 [2022-07-21 13:55:26,775 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enter_suspend1 [2022-07-21 13:55:26,776 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_enter_suspend2 [2022-07-21 13:55:26,776 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_enter_suspend2 [2022-07-21 13:55:26,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 13:55:26,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 13:55:26,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 13:55:26,776 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_read_eeprom [2022-07-21 13:55:26,776 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_read_eeprom [2022-07-21 13:55:26,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 13:55:26,776 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_set_multicast [2022-07-21 13:55:26,776 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_set_multicast [2022-07-21 13:55:26,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 13:55:26,777 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_start_offset [2022-07-21 13:55:26,777 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_start_offset [2022-07-21 13:55:26,777 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-21 13:55:26,777 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-21 13:55:26,777 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-21 13:55:26,777 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-21 13:55:26,777 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-21 13:55:26,777 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-21 13:55:26,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-07-21 13:55:26,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-07-21 13:55:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-21 13:55:26,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-21 13:55:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_read [2022-07-21 13:55:26,778 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_read [2022-07-21 13:55:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_phy_wait_not_busy [2022-07-21 13:55:26,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_phy_wait_not_busy [2022-07-21 13:55:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-07-21 13:55:26,778 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-07-21 13:55:26,778 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_2_4 [2022-07-21 13:55:26,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_2_4 [2022-07-21 13:55:26,779 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_write_reg_async [2022-07-21 13:55:26,779 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_write_reg_async [2022-07-21 13:55:26,779 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-21 13:55:26,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-21 13:55:26,779 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 13:55:26,779 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 13:55:26,779 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_mdio_read_nopm [2022-07-21 13:55:26,779 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_mdio_read_nopm [2022-07-21 13:55:26,779 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_resume [2022-07-21 13:55:26,780 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_resume [2022-07-21 13:55:26,780 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-21 13:55:26,780 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-21 13:55:26,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-21 13:55:26,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-21 13:55:26,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 13:55:26,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-21 13:55:26,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 13:55:26,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 13:55:26,781 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2022-07-21 13:55:26,781 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 13:55:26,781 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 13:55:26,781 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc95xx_mdio_read [2022-07-21 13:55:26,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc95xx_mdio_read [2022-07-21 13:55:26,782 INFO L130 BoogieDeclarations]: Found specification of procedure smsc95xx_eeprom_confirm_not_busy [2022-07-21 13:55:26,782 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc95xx_eeprom_confirm_not_busy [2022-07-21 13:55:26,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-07-21 13:55:26,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-07-21 13:55:26,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-07-21 13:55:26,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-07-21 13:55:27,476 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 13:55:27,479 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 13:55:27,656 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 13:56:13,820 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-07-21 13:56:13,857 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 13:56:13,876 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 13:56:13,876 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 13:56:13,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:56:13 BoogieIcfgContainer [2022-07-21 13:56:13,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 13:56:13,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 13:56:13,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 13:56:13,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 13:56:13,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:55:23" (1/3) ... [2022-07-21 13:56:13,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7dc932 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 13:56:13,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:26" (2/3) ... [2022-07-21 13:56:13,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7dc932 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 13:56:13,884 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 13:56:13,884 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc95xx.cil.i [2022-07-21 13:56:13,894 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 13:56:13,894 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-21 13:56:13,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 13:56:13,957 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@427705b6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5d56cd94 [2022-07-21 13:56:13,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-21 13:56:13,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 1697 states, 1232 states have (on average 1.3465909090909092) internal successors, (1659), 1238 states have internal predecessors, (1659), 386 states have call successors, (386), 77 states have call predecessors, (386), 76 states have return successors, (379), 379 states have call predecessors, (379), 379 states have call successors, (379) [2022-07-21 13:56:13,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-21 13:56:13,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:13,992 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:13,993 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 13:56:13,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:13,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2048722027, now seen corresponding path program 1 times [2022-07-21 13:56:14,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:14,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343136269] [2022-07-21 13:56:14,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:14,011 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:14,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:14,013 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 13:56:14,031 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 13:56:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:15,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:56:15,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:15,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2022-07-21 13:56:15,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:56:15,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:15,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343136269] [2022-07-21 13:56:15,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343136269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:56:15,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:56:15,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:56:15,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562603492] [2022-07-21 13:56:15,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:15,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:56:15,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:15,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:56:15,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:15,459 INFO L87 Difference]: Start difference. First operand has 1697 states, 1232 states have (on average 1.3465909090909092) internal successors, (1659), 1238 states have internal predecessors, (1659), 386 states have call successors, (386), 77 states have call predecessors, (386), 76 states have return successors, (379), 379 states have call predecessors, (379), 379 states have call successors, (379) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-21 13:56:15,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:15,979 INFO L93 Difference]: Finished difference Result 4903 states and 7330 transitions. [2022-07-21 13:56:15,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:56:15,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 228 [2022-07-21 13:56:15,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:16,012 INFO L225 Difference]: With dead ends: 4903 [2022-07-21 13:56:16,012 INFO L226 Difference]: Without dead ends: 3236 [2022-07-21 13:56:16,027 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 13:56:16,030 INFO L413 NwaCegarLoop]: 2745 mSDtfsCounter, 2235 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2235 SdHoareTripleChecker+Valid, 5092 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:16,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2235 Valid, 5092 Invalid, 44 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:56:16,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3236 states. [2022-07-21 13:56:16,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3236 to 3232. [2022-07-21 13:56:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3232 states, 2375 states have (on average 1.3406315789473684) internal successors, (3184), 2386 states have internal predecessors, (3184), 706 states have call successors, (706), 149 states have call predecessors, (706), 148 states have return successors, (702), 702 states have call predecessors, (702), 702 states have call successors, (702) [2022-07-21 13:56:16,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3232 states to 3232 states and 4592 transitions. [2022-07-21 13:56:16,188 INFO L78 Accepts]: Start accepts. Automaton has 3232 states and 4592 transitions. Word has length 228 [2022-07-21 13:56:16,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:16,189 INFO L495 AbstractCegarLoop]: Abstraction has 3232 states and 4592 transitions. [2022-07-21 13:56:16,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-21 13:56:16,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3232 states and 4592 transitions. [2022-07-21 13:56:16,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-07-21 13:56:16,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:16,194 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:16,230 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 13:56:16,406 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 13:56:16,407 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 13:56:16,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:16,407 INFO L85 PathProgramCache]: Analyzing trace with hash 775454786, now seen corresponding path program 1 times [2022-07-21 13:56:16,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:16,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535491054] [2022-07-21 13:56:16,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:16,424 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:16,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:16,427 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 13:56:16,429 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 13:56:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:17,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:56:17,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1377 trivial. 0 not checked. [2022-07-21 13:56:17,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:56:17,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:17,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535491054] [2022-07-21 13:56:17,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535491054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:56:17,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:56:17,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:56:17,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223434128] [2022-07-21 13:56:17,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:17,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:56:17,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:17,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:56:17,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:17,754 INFO L87 Difference]: Start difference. First operand 3232 states and 4592 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-21 13:56:18,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:18,257 INFO L93 Difference]: Finished difference Result 7614 states and 10818 transitions. [2022-07-21 13:56:18,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:56:18,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 243 [2022-07-21 13:56:18,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:18,279 INFO L225 Difference]: With dead ends: 7614 [2022-07-21 13:56:18,280 INFO L226 Difference]: Without dead ends: 4423 [2022-07-21 13:56:18,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:18,378 INFO L413 NwaCegarLoop]: 2821 mSDtfsCounter, 1987 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 5121 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:18,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 5121 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 13:56:18,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4423 states. [2022-07-21 13:56:18,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4423 to 4396. [2022-07-21 13:56:18,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 3187 states have (on average 1.3410731095073738) internal successors, (4274), 3206 states have internal predecessors, (4274), 985 states have call successors, (985), 222 states have call predecessors, (985), 221 states have return successors, (981), 976 states have call predecessors, (981), 981 states have call successors, (981) [2022-07-21 13:56:18,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 6240 transitions. [2022-07-21 13:56:18,517 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 6240 transitions. Word has length 243 [2022-07-21 13:56:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:18,518 INFO L495 AbstractCegarLoop]: Abstraction has 4396 states and 6240 transitions. [2022-07-21 13:56:18,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-21 13:56:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 6240 transitions. [2022-07-21 13:56:18,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-07-21 13:56:18,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:18,524 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:18,597 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 13:56:18,751 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 13:56:18,752 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 13:56:18,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:18,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1690325682, now seen corresponding path program 1 times [2022-07-21 13:56:18,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:18,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415947608] [2022-07-21 13:56:18,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:18,755 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:18,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:18,756 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 13:56:18,758 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 13:56:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:20,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 2047 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:56:20,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-07-21 13:56:20,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:56:20,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:20,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415947608] [2022-07-21 13:56:20,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415947608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:56:20,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:56:20,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:56:20,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259845622] [2022-07-21 13:56:20,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:20,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:56:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:20,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:56:20,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:20,127 INFO L87 Difference]: Start difference. First operand 4396 states and 6240 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-21 13:56:20,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:20,503 INFO L93 Difference]: Finished difference Result 10317 states and 14649 transitions. [2022-07-21 13:56:20,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:56:20,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 287 [2022-07-21 13:56:20,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:20,543 INFO L225 Difference]: With dead ends: 10317 [2022-07-21 13:56:20,543 INFO L226 Difference]: Without dead ends: 7274 [2022-07-21 13:56:20,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:20,561 INFO L413 NwaCegarLoop]: 4584 mSDtfsCounter, 2196 mSDsluCounter, 2355 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 6939 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:20,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2196 Valid, 6939 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:56:20,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2022-07-21 13:56:20,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7270. [2022-07-21 13:56:20,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7270 states, 5297 states have (on average 1.3430243534075892) internal successors, (7114), 5322 states have internal predecessors, (7114), 1605 states have call successors, (1605), 366 states have call predecessors, (1605), 365 states have return successors, (1601), 1596 states have call predecessors, (1601), 1601 states have call successors, (1601) [2022-07-21 13:56:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7270 states to 7270 states and 10320 transitions. [2022-07-21 13:56:20,841 INFO L78 Accepts]: Start accepts. Automaton has 7270 states and 10320 transitions. Word has length 287 [2022-07-21 13:56:20,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:20,841 INFO L495 AbstractCegarLoop]: Abstraction has 7270 states and 10320 transitions. [2022-07-21 13:56:20,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-07-21 13:56:20,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7270 states and 10320 transitions. [2022-07-21 13:56:20,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-07-21 13:56:20,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:20,847 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:20,896 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 13:56:21,071 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 13:56:21,071 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 13:56:21,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:21,072 INFO L85 PathProgramCache]: Analyzing trace with hash -681413580, now seen corresponding path program 1 times [2022-07-21 13:56:21,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:21,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846690048] [2022-07-21 13:56:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:21,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:21,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:21,075 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 13:56:21,078 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 13:56:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:22,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 2047 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:22,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2022-07-21 13:56:23,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:56:23,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:23,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846690048] [2022-07-21 13:56:23,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846690048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:56:23,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:56:23,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 13:56:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869177432] [2022-07-21 13:56:23,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:23,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:23,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:23,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 13:56:23,916 INFO L87 Difference]: Start difference. First operand 7270 states and 10320 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-21 13:56:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:24,263 INFO L93 Difference]: Finished difference Result 7276 states and 10325 transitions. [2022-07-21 13:56:24,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 13:56:24,263 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 287 [2022-07-21 13:56:24,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:24,294 INFO L225 Difference]: With dead ends: 7276 [2022-07-21 13:56:24,295 INFO L226 Difference]: Without dead ends: 7274 [2022-07-21 13:56:24,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:24,300 INFO L413 NwaCegarLoop]: 2385 mSDtfsCounter, 2277 mSDsluCounter, 4758 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 7143 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:24,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 7143 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:24,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2022-07-21 13:56:24,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7274. [2022-07-21 13:56:24,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7274 states, 5300 states have (on average 1.3428301886792453) internal successors, (7117), 5325 states have internal predecessors, (7117), 1605 states have call successors, (1605), 367 states have call predecessors, (1605), 366 states have return successors, (1601), 1596 states have call predecessors, (1601), 1601 states have call successors, (1601) [2022-07-21 13:56:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7274 states to 7274 states and 10323 transitions. [2022-07-21 13:56:24,528 INFO L78 Accepts]: Start accepts. Automaton has 7274 states and 10323 transitions. Word has length 287 [2022-07-21 13:56:24,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:24,531 INFO L495 AbstractCegarLoop]: Abstraction has 7274 states and 10323 transitions. [2022-07-21 13:56:24,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 1 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-21 13:56:24,531 INFO L276 IsEmpty]: Start isEmpty. Operand 7274 states and 10323 transitions. [2022-07-21 13:56:24,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-21 13:56:24,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:24,537 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:24,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-21 13:56:24,751 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 13:56:24,751 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 13:56:24,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:24,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2099691453, now seen corresponding path program 1 times [2022-07-21 13:56:24,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:24,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937631056] [2022-07-21 13:56:24,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:24,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:24,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:24,756 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 13:56:24,757 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 13:56:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:25,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 2054 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:25,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2022-07-21 13:56:27,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:28,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1647 trivial. 0 not checked. [2022-07-21 13:56:28,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:28,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937631056] [2022-07-21 13:56:28,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937631056] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:28,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:28,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:28,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519025388] [2022-07-21 13:56:28,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:28,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:28,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:28,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:28,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:28,303 INFO L87 Difference]: Start difference. First operand 7274 states and 10323 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 13:56:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:28,584 INFO L93 Difference]: Finished difference Result 7280 states and 10328 transitions. [2022-07-21 13:56:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:28,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 292 [2022-07-21 13:56:28,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:28,630 INFO L225 Difference]: With dead ends: 7280 [2022-07-21 13:56:28,630 INFO L226 Difference]: Without dead ends: 7278 [2022-07-21 13:56:28,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 577 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:56:28,636 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:28,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:28,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7278 states. [2022-07-21 13:56:28,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7278 to 7278. [2022-07-21 13:56:28,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7278 states, 5303 states have (on average 1.342636243635678) internal successors, (7120), 5328 states have internal predecessors, (7120), 1605 states have call successors, (1605), 368 states have call predecessors, (1605), 367 states have return successors, (1601), 1596 states have call predecessors, (1601), 1601 states have call successors, (1601) [2022-07-21 13:56:28,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7278 states to 7278 states and 10326 transitions. [2022-07-21 13:56:28,902 INFO L78 Accepts]: Start accepts. Automaton has 7278 states and 10326 transitions. Word has length 292 [2022-07-21 13:56:28,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:28,903 INFO L495 AbstractCegarLoop]: Abstraction has 7278 states and 10326 transitions. [2022-07-21 13:56:28,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-21 13:56:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 7278 states and 10326 transitions. [2022-07-21 13:56:28,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-07-21 13:56:28,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:28,910 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:28,943 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 13:56:29,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 13:56:29,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:29,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:29,133 INFO L85 PathProgramCache]: Analyzing trace with hash 705078606, now seen corresponding path program 1 times [2022-07-21 13:56:29,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:29,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939513215] [2022-07-21 13:56:29,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:29,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:29,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:29,137 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 13:56:29,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 13:56:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:30,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 2103 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:56:30,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1664 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2022-07-21 13:56:30,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:56:30,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:30,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939513215] [2022-07-21 13:56:30,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939513215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:56:30,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:56:30,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:56:30,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57819576] [2022-07-21 13:56:30,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:30,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:56:30,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:30,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:56:30,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:30,507 INFO L87 Difference]: Start difference. First operand 7278 states and 10326 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-21 13:56:30,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:30,979 INFO L93 Difference]: Finished difference Result 16109 states and 22859 transitions. [2022-07-21 13:56:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:56:30,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 306 [2022-07-21 13:56:30,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:31,085 INFO L225 Difference]: With dead ends: 16109 [2022-07-21 13:56:31,085 INFO L226 Difference]: Without dead ends: 10184 [2022-07-21 13:56:31,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:31,105 INFO L413 NwaCegarLoop]: 4596 mSDtfsCounter, 2229 mSDsluCounter, 2357 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2229 SdHoareTripleChecker+Valid, 6953 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:31,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2229 Valid, 6953 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:56:31,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10184 states. [2022-07-21 13:56:31,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10184 to 10154. [2022-07-21 13:56:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10154 states, 7415 states have (on average 1.3434929197572487) internal successors, (9962), 7446 states have internal predecessors, (9962), 2225 states have call successors, (2225), 512 states have call predecessors, (2225), 511 states have return successors, (2221), 2216 states have call predecessors, (2221), 2221 states have call successors, (2221) [2022-07-21 13:56:31,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10154 states to 10154 states and 14408 transitions. [2022-07-21 13:56:31,377 INFO L78 Accepts]: Start accepts. Automaton has 10154 states and 14408 transitions. Word has length 306 [2022-07-21 13:56:31,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:31,379 INFO L495 AbstractCegarLoop]: Abstraction has 10154 states and 14408 transitions. [2022-07-21 13:56:31,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-21 13:56:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 10154 states and 14408 transitions. [2022-07-21 13:56:31,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-07-21 13:56:31,385 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:31,386 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:31,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-21 13:56:31,611 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 13:56:31,611 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 13:56:31,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:31,612 INFO L85 PathProgramCache]: Analyzing trace with hash -948454060, now seen corresponding path program 1 times [2022-07-21 13:56:31,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:31,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695271591] [2022-07-21 13:56:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:31,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:31,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:31,615 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 13:56:31,616 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 13:56:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:32,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 2061 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:32,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2022-07-21 13:56:34,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1655 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1651 trivial. 0 not checked. [2022-07-21 13:56:35,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:35,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695271591] [2022-07-21 13:56:35,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695271591] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:35,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:35,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:35,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957809568] [2022-07-21 13:56:35,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:35,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:35,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:35,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:35,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:35,218 INFO L87 Difference]: Start difference. First operand 10154 states and 14408 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 13:56:35,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:35,520 INFO L93 Difference]: Finished difference Result 10160 states and 14413 transitions. [2022-07-21 13:56:35,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:35,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 297 [2022-07-21 13:56:35,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:35,554 INFO L225 Difference]: With dead ends: 10160 [2022-07-21 13:56:35,555 INFO L226 Difference]: Without dead ends: 10158 [2022-07-21 13:56:35,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 587 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:56:35,562 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:35,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2313 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:35,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10158 states. [2022-07-21 13:56:35,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10158 to 10158. [2022-07-21 13:56:35,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10158 states, 7418 states have (on average 1.3433540037746023) internal successors, (9965), 7449 states have internal predecessors, (9965), 2225 states have call successors, (2225), 513 states have call predecessors, (2225), 512 states have return successors, (2221), 2216 states have call predecessors, (2221), 2221 states have call successors, (2221) [2022-07-21 13:56:35,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10158 states to 10158 states and 14411 transitions. [2022-07-21 13:56:35,863 INFO L78 Accepts]: Start accepts. Automaton has 10158 states and 14411 transitions. Word has length 297 [2022-07-21 13:56:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:35,863 INFO L495 AbstractCegarLoop]: Abstraction has 10158 states and 14411 transitions. [2022-07-21 13:56:35,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 13:56:35,864 INFO L276 IsEmpty]: Start isEmpty. Operand 10158 states and 14411 transitions. [2022-07-21 13:56:35,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-07-21 13:56:35,870 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:35,870 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:35,907 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 13:56:36,093 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 13:56:36,094 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 13:56:36,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:36,094 INFO L85 PathProgramCache]: Analyzing trace with hash 545184419, now seen corresponding path program 1 times [2022-07-21 13:56:36,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:36,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407816142] [2022-07-21 13:56:36,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:36,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:36,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:36,097 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 13:56:36,099 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 13:56:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:37,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 2068 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:37,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1665 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1659 trivial. 0 not checked. [2022-07-21 13:56:39,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:39,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1665 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1659 trivial. 0 not checked. [2022-07-21 13:56:39,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:39,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407816142] [2022-07-21 13:56:39,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407816142] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:39,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:39,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:39,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082493643] [2022-07-21 13:56:39,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:39,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:39,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:39,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:39,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:39,841 INFO L87 Difference]: Start difference. First operand 10158 states and 14411 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-21 13:56:40,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:40,265 INFO L93 Difference]: Finished difference Result 10164 states and 14416 transitions. [2022-07-21 13:56:40,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:40,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 302 [2022-07-21 13:56:40,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:40,300 INFO L225 Difference]: With dead ends: 10164 [2022-07-21 13:56:40,301 INFO L226 Difference]: Without dead ends: 10162 [2022-07-21 13:56:40,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 597 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:56:40,307 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2312 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:40,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2312 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:40,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10162 states. [2022-07-21 13:56:40,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10162 to 10162. [2022-07-21 13:56:40,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10162 states, 7421 states have (on average 1.3432152001078022) internal successors, (9968), 7452 states have internal predecessors, (9968), 2225 states have call successors, (2225), 514 states have call predecessors, (2225), 513 states have return successors, (2221), 2216 states have call predecessors, (2221), 2221 states have call successors, (2221) [2022-07-21 13:56:40,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10162 states to 10162 states and 14414 transitions. [2022-07-21 13:56:40,659 INFO L78 Accepts]: Start accepts. Automaton has 10162 states and 14414 transitions. Word has length 302 [2022-07-21 13:56:40,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:40,659 INFO L495 AbstractCegarLoop]: Abstraction has 10162 states and 14414 transitions. [2022-07-21 13:56:40,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-21 13:56:40,660 INFO L276 IsEmpty]: Start isEmpty. Operand 10162 states and 14414 transitions. [2022-07-21 13:56:40,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-07-21 13:56:40,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:40,667 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:40,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-21 13:56:40,882 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 13:56:40,883 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 13:56:40,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:40,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1464716916, now seen corresponding path program 1 times [2022-07-21 13:56:40,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:40,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169861324] [2022-07-21 13:56:40,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:40,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:40,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:40,886 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 13:56:40,888 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 13:56:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:42,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 2075 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:42,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1671 trivial. 0 not checked. [2022-07-21 13:56:43,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1679 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1671 trivial. 0 not checked. [2022-07-21 13:56:44,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:44,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169861324] [2022-07-21 13:56:44,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169861324] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:44,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:44,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055142775] [2022-07-21 13:56:44,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:44,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:44,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:44,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:44,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:44,295 INFO L87 Difference]: Start difference. First operand 10162 states and 14414 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 13:56:44,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:44,688 INFO L93 Difference]: Finished difference Result 10168 states and 14419 transitions. [2022-07-21 13:56:44,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:44,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 307 [2022-07-21 13:56:44,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:44,726 INFO L225 Difference]: With dead ends: 10168 [2022-07-21 13:56:44,726 INFO L226 Difference]: Without dead ends: 10166 [2022-07-21 13:56:44,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:56:44,733 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:44,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2311 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:44,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10166 states. [2022-07-21 13:56:45,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10166 to 10166. [2022-07-21 13:56:45,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10166 states, 7424 states have (on average 1.3430765086206897) internal successors, (9971), 7455 states have internal predecessors, (9971), 2225 states have call successors, (2225), 515 states have call predecessors, (2225), 514 states have return successors, (2221), 2216 states have call predecessors, (2221), 2221 states have call successors, (2221) [2022-07-21 13:56:45,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10166 states to 10166 states and 14417 transitions. [2022-07-21 13:56:45,125 INFO L78 Accepts]: Start accepts. Automaton has 10166 states and 14417 transitions. Word has length 307 [2022-07-21 13:56:45,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:45,125 INFO L495 AbstractCegarLoop]: Abstraction has 10166 states and 14417 transitions. [2022-07-21 13:56:45,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-21 13:56:45,126 INFO L276 IsEmpty]: Start isEmpty. Operand 10166 states and 14417 transitions. [2022-07-21 13:56:45,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-07-21 13:56:45,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:45,133 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:45,185 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 13:56:45,347 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 13:56:45,348 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:45,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:45,348 INFO L85 PathProgramCache]: Analyzing trace with hash 381872330, now seen corresponding path program 1 times [2022-07-21 13:56:45,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:45,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081324243] [2022-07-21 13:56:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:45,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:45,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:45,360 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 13:56:45,364 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 13:56:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:47,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 3041 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:56:47,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1623 trivial. 0 not checked. [2022-07-21 13:56:47,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:56:47,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:47,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081324243] [2022-07-21 13:56:47,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081324243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:56:47,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:56:47,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:56:47,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087939240] [2022-07-21 13:56:47,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:47,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:56:47,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:47,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:56:47,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:47,257 INFO L87 Difference]: Start difference. First operand 10166 states and 14417 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-07-21 13:56:47,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:47,962 INFO L93 Difference]: Finished difference Result 27356 states and 38760 transitions. [2022-07-21 13:56:47,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:56:47,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 441 [2022-07-21 13:56:47,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:48,015 INFO L225 Difference]: With dead ends: 27356 [2022-07-21 13:56:48,016 INFO L226 Difference]: Without dead ends: 17231 [2022-07-21 13:56:48,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:48,047 INFO L413 NwaCegarLoop]: 2781 mSDtfsCounter, 1698 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1698 SdHoareTripleChecker+Valid, 5128 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:48,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1698 Valid, 5128 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:56:48,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17231 states. [2022-07-21 13:56:48,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17231 to 17172. [2022-07-21 13:56:48,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17172 states, 12644 states have (on average 1.341901297057893) internal successors, (16967), 12711 states have internal predecessors, (16967), 3650 states have call successors, (3650), 876 states have call predecessors, (3650), 875 states have return successors, (3646), 3619 states have call predecessors, (3646), 3646 states have call successors, (3646) [2022-07-21 13:56:48,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17172 states to 17172 states and 24263 transitions. [2022-07-21 13:56:48,635 INFO L78 Accepts]: Start accepts. Automaton has 17172 states and 24263 transitions. Word has length 441 [2022-07-21 13:56:48,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:48,636 INFO L495 AbstractCegarLoop]: Abstraction has 17172 states and 24263 transitions. [2022-07-21 13:56:48,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-07-21 13:56:48,636 INFO L276 IsEmpty]: Start isEmpty. Operand 17172 states and 24263 transitions. [2022-07-21 13:56:48,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2022-07-21 13:56:48,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:48,644 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:48,695 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 13:56:48,865 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 13:56:48,866 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:56:48,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:48,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1342567629, now seen corresponding path program 1 times [2022-07-21 13:56:48,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:48,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131937454] [2022-07-21 13:56:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:48,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:48,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:48,876 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 13:56:48,926 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 13:56:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:50,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 3014 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:56:50,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 1623 trivial. 0 not checked. [2022-07-21 13:56:50,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:56:50,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:50,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131937454] [2022-07-21 13:56:50,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131937454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:56:50,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:56:50,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:56:50,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479651630] [2022-07-21 13:56:50,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:50,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:56:50,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:50,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:56:50,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:50,698 INFO L87 Difference]: Start difference. First operand 17172 states and 24263 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-07-21 13:56:51,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:51,597 INFO L93 Difference]: Finished difference Result 42119 states and 59393 transitions. [2022-07-21 13:56:51,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:56:51,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) Word has length 435 [2022-07-21 13:56:51,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:51,683 INFO L225 Difference]: With dead ends: 42119 [2022-07-21 13:56:51,683 INFO L226 Difference]: Without dead ends: 24988 [2022-07-21 13:56:51,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:56:51,728 INFO L413 NwaCegarLoop]: 2790 mSDtfsCounter, 1936 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 5138 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:51,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1936 Valid, 5138 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:56:51,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24988 states. [2022-07-21 13:56:52,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24988 to 24935. [2022-07-21 13:56:52,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24935 states, 18352 states have (on average 1.3359306887532694) internal successors, (24517), 18457 states have internal predecessors, (24517), 5275 states have call successors, (5275), 1306 states have call predecessors, (5275), 1305 states have return successors, (5271), 5208 states have call predecessors, (5271), 5271 states have call successors, (5271) [2022-07-21 13:56:52,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24935 states to 24935 states and 35063 transitions. [2022-07-21 13:56:52,566 INFO L78 Accepts]: Start accepts. Automaton has 24935 states and 35063 transitions. Word has length 435 [2022-07-21 13:56:52,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:52,567 INFO L495 AbstractCegarLoop]: Abstraction has 24935 states and 35063 transitions. [2022-07-21 13:56:52,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (37), 3 states have call predecessors, (37), 3 states have call successors, (37) [2022-07-21 13:56:52,568 INFO L276 IsEmpty]: Start isEmpty. Operand 24935 states and 35063 transitions. [2022-07-21 13:56:52,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-07-21 13:56:52,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:52,573 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:52,647 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 13:56:52,791 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 13:56:52,791 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 13:56:52,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:52,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1067494659, now seen corresponding path program 1 times [2022-07-21 13:56:52,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:52,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805825435] [2022-07-21 13:56:52,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:52,793 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:52,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:52,808 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 13:56:52,859 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 13:56:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:54,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 2082 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:54,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:56:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1697 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1687 trivial. 0 not checked. [2022-07-21 13:56:55,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:56:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1697 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1687 trivial. 0 not checked. [2022-07-21 13:56:56,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:56:56,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805825435] [2022-07-21 13:56:56,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805825435] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:56:56,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:56:56,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:56:56,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707933307] [2022-07-21 13:56:56,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:56:56,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:56:56,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:56:56,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:56:56,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:56:56,785 INFO L87 Difference]: Start difference. First operand 24935 states and 35063 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-21 13:56:57,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:56:57,545 INFO L93 Difference]: Finished difference Result 24941 states and 35068 transitions. [2022-07-21 13:56:57,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:56:57,546 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 312 [2022-07-21 13:56:57,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:56:57,626 INFO L225 Difference]: With dead ends: 24941 [2022-07-21 13:56:57,626 INFO L226 Difference]: Without dead ends: 24939 [2022-07-21 13:56:57,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:56:57,639 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:56:57,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:56:57,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24939 states. [2022-07-21 13:56:58,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24939 to 24939. [2022-07-21 13:56:58,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24939 states, 18355 states have (on average 1.33587578316535) internal successors, (24520), 18460 states have internal predecessors, (24520), 5275 states have call successors, (5275), 1307 states have call predecessors, (5275), 1306 states have return successors, (5271), 5208 states have call predecessors, (5271), 5271 states have call successors, (5271) [2022-07-21 13:56:58,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24939 states to 24939 states and 35066 transitions. [2022-07-21 13:56:58,438 INFO L78 Accepts]: Start accepts. Automaton has 24939 states and 35066 transitions. Word has length 312 [2022-07-21 13:56:58,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:56:58,439 INFO L495 AbstractCegarLoop]: Abstraction has 24939 states and 35066 transitions. [2022-07-21 13:56:58,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-21 13:56:58,439 INFO L276 IsEmpty]: Start isEmpty. Operand 24939 states and 35066 transitions. [2022-07-21 13:56:58,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-07-21 13:56:58,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:56:58,444 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:56:58,476 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 13:56:58,659 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 13:56:58,659 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 13:56:58,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:56:58,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2104842348, now seen corresponding path program 1 times [2022-07-21 13:56:58,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:56:58,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966402190] [2022-07-21 13:56:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:56:58,662 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:56:58,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:56:58,663 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 13:56:58,665 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 13:56:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:56:59,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:56:59,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:01,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1707 trivial. 0 not checked. [2022-07-21 13:57:01,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:57:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1707 trivial. 0 not checked. [2022-07-21 13:57:02,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:02,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966402190] [2022-07-21 13:57:02,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966402190] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:57:02,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:57:02,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:57:02,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148293726] [2022-07-21 13:57:02,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:02,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:57:02,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:02,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:57:02,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:57:02,570 INFO L87 Difference]: Start difference. First operand 24939 states and 35066 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-21 13:57:03,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:03,308 INFO L93 Difference]: Finished difference Result 24945 states and 35071 transitions. [2022-07-21 13:57:03,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:57:03,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 317 [2022-07-21 13:57:03,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:03,388 INFO L225 Difference]: With dead ends: 24945 [2022-07-21 13:57:03,388 INFO L226 Difference]: Without dead ends: 24943 [2022-07-21 13:57:03,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:57:03,402 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2309 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:03,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2309 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:57:03,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24943 states. [2022-07-21 13:57:04,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24943 to 24943. [2022-07-21 13:57:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24943 states, 18358 states have (on average 1.335820895522388) internal successors, (24523), 18463 states have internal predecessors, (24523), 5275 states have call successors, (5275), 1308 states have call predecessors, (5275), 1307 states have return successors, (5271), 5208 states have call predecessors, (5271), 5271 states have call successors, (5271) [2022-07-21 13:57:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24943 states to 24943 states and 35069 transitions. [2022-07-21 13:57:04,285 INFO L78 Accepts]: Start accepts. Automaton has 24943 states and 35069 transitions. Word has length 317 [2022-07-21 13:57:04,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:04,286 INFO L495 AbstractCegarLoop]: Abstraction has 24943 states and 35069 transitions. [2022-07-21 13:57:04,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-21 13:57:04,286 INFO L276 IsEmpty]: Start isEmpty. Operand 24943 states and 35069 transitions. [2022-07-21 13:57:04,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-07-21 13:57:04,292 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:04,293 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:57:04,326 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 13:57:04,507 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 13:57:04,507 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 13:57:04,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:04,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1012447075, now seen corresponding path program 1 times [2022-07-21 13:57:04,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:04,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473546829] [2022-07-21 13:57:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:04,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:04,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:04,511 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 13:57:04,512 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 13:57:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:05,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:57:05,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1731 trivial. 0 not checked. [2022-07-21 13:57:07,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:57:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1731 trivial. 0 not checked. [2022-07-21 13:57:08,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:08,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473546829] [2022-07-21 13:57:08,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473546829] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:57:08,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:57:08,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:57:08,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442578079] [2022-07-21 13:57:08,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:08,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:57:08,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:08,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:57:08,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:57:08,047 INFO L87 Difference]: Start difference. First operand 24943 states and 35069 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-21 13:57:08,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:08,811 INFO L93 Difference]: Finished difference Result 25103 states and 35184 transitions. [2022-07-21 13:57:08,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:57:08,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 322 [2022-07-21 13:57:08,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:08,881 INFO L225 Difference]: With dead ends: 25103 [2022-07-21 13:57:08,881 INFO L226 Difference]: Without dead ends: 25101 [2022-07-21 13:57:08,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 637 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:57:08,893 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2221 mSDsluCounter, 4843 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 7231 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:08,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2225 Valid, 7231 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:57:08,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25101 states. [2022-07-21 13:57:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25101 to 25101. [2022-07-21 13:57:09,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25101 states, 18471 states have (on average 1.3337664446970927) internal successors, (24636), 18576 states have internal predecessors, (24636), 5275 states have call successors, (5275), 1353 states have call predecessors, (5275), 1352 states have return successors, (5271), 5208 states have call predecessors, (5271), 5271 states have call successors, (5271) [2022-07-21 13:57:09,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25101 states to 25101 states and 35182 transitions. [2022-07-21 13:57:09,691 INFO L78 Accepts]: Start accepts. Automaton has 25101 states and 35182 transitions. Word has length 322 [2022-07-21 13:57:09,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:09,692 INFO L495 AbstractCegarLoop]: Abstraction has 25101 states and 35182 transitions. [2022-07-21 13:57:09,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-21 13:57:09,692 INFO L276 IsEmpty]: Start isEmpty. Operand 25101 states and 35182 transitions. [2022-07-21 13:57:09,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-07-21 13:57:09,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:09,697 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:57:09,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-07-21 13:57:09,900 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 13:57:09,900 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 13:57:09,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:09,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1834240180, now seen corresponding path program 1 times [2022-07-21 13:57:09,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:09,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968916733] [2022-07-21 13:57:09,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:09,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:09,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:09,906 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 13:57:09,907 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 13:57:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:10,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 2103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:57:10,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:12,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1775 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2022-07-21 13:57:12,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:57:13,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1775 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1759 trivial. 0 not checked. [2022-07-21 13:57:13,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:13,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968916733] [2022-07-21 13:57:13,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968916733] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:57:13,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:57:13,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:57:13,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936390099] [2022-07-21 13:57:13,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:13,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:57:13,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:13,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:57:13,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:57:13,303 INFO L87 Difference]: Start difference. First operand 25101 states and 35182 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-21 13:57:14,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:14,186 INFO L93 Difference]: Finished difference Result 25107 states and 35187 transitions. [2022-07-21 13:57:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:57:14,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 327 [2022-07-21 13:57:14,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:14,268 INFO L225 Difference]: With dead ends: 25107 [2022-07-21 13:57:14,268 INFO L226 Difference]: Without dead ends: 25105 [2022-07-21 13:57:14,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 647 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:57:14,284 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:14,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2307 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:57:14,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25105 states. [2022-07-21 13:57:15,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25105 to 25105. [2022-07-21 13:57:15,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25105 states, 18474 states have (on average 1.3337122442351412) internal successors, (24639), 18579 states have internal predecessors, (24639), 5275 states have call successors, (5275), 1354 states have call predecessors, (5275), 1353 states have return successors, (5271), 5208 states have call predecessors, (5271), 5271 states have call successors, (5271) [2022-07-21 13:57:15,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25105 states to 25105 states and 35185 transitions. [2022-07-21 13:57:15,338 INFO L78 Accepts]: Start accepts. Automaton has 25105 states and 35185 transitions. Word has length 327 [2022-07-21 13:57:15,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:15,339 INFO L495 AbstractCegarLoop]: Abstraction has 25105 states and 35185 transitions. [2022-07-21 13:57:15,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-21 13:57:15,339 INFO L276 IsEmpty]: Start isEmpty. Operand 25105 states and 35185 transitions. [2022-07-21 13:57:15,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2022-07-21 13:57:15,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:15,371 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 10, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:57:15,408 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 13:57:15,572 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 13:57:15,572 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 13:57:15,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:15,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1707017789, now seen corresponding path program 1 times [2022-07-21 13:57:15,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:15,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76646138] [2022-07-21 13:57:15,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:15,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:15,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:15,576 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 13:57:15,577 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 13:57:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:16,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:57:16,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1791 trivial. 0 not checked. [2022-07-21 13:57:18,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:57:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1791 trivial. 0 not checked. [2022-07-21 13:57:19,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:19,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76646138] [2022-07-21 13:57:19,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76646138] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:57:19,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:57:19,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:57:19,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490553446] [2022-07-21 13:57:19,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:19,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:57:19,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:19,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:57:19,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:57:19,323 INFO L87 Difference]: Start difference. First operand 25105 states and 35185 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-07-21 13:57:20,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:20,192 INFO L93 Difference]: Finished difference Result 25111 states and 35190 transitions. [2022-07-21 13:57:20,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:57:20,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 332 [2022-07-21 13:57:20,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:20,265 INFO L225 Difference]: With dead ends: 25111 [2022-07-21 13:57:20,266 INFO L226 Difference]: Without dead ends: 25109 [2022-07-21 13:57:20,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:57:20,277 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:20,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:57:20,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25109 states. [2022-07-21 13:57:21,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25109 to 25109. [2022-07-21 13:57:21,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25109 states, 18477 states have (on average 1.3336580613735995) internal successors, (24642), 18582 states have internal predecessors, (24642), 5275 states have call successors, (5275), 1355 states have call predecessors, (5275), 1354 states have return successors, (5271), 5208 states have call predecessors, (5271), 5271 states have call successors, (5271) [2022-07-21 13:57:21,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25109 states to 25109 states and 35188 transitions. [2022-07-21 13:57:21,189 INFO L78 Accepts]: Start accepts. Automaton has 25109 states and 35188 transitions. Word has length 332 [2022-07-21 13:57:21,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:21,190 INFO L495 AbstractCegarLoop]: Abstraction has 25109 states and 35188 transitions. [2022-07-21 13:57:21,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-07-21 13:57:21,190 INFO L276 IsEmpty]: Start isEmpty. Operand 25109 states and 35188 transitions. [2022-07-21 13:57:21,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-07-21 13:57:21,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:21,197 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 18, 18, 18, 18, 18, 18, 11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:57:21,259 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 13:57:21,418 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 13:57:21,419 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 13:57:21,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:21,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1323935749, now seen corresponding path program 1 times [2022-07-21 13:57:21,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:21,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2553430] [2022-07-21 13:57:21,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:21,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:21,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:21,429 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 13:57:21,430 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 13:57:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:22,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 13:57:22,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:23,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 321 proven. 3 refuted. 0 times theorem prover too weak. 1704 trivial. 0 not checked. [2022-07-21 13:57:23,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:57:24,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2028 backedges. 51 proven. 18 refuted. 0 times theorem prover too weak. 1959 trivial. 0 not checked. [2022-07-21 13:57:24,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:24,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2553430] [2022-07-21 13:57:24,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2553430] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 13:57:24,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 13:57:24,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 22 [2022-07-21 13:57:24,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713693153] [2022-07-21 13:57:24,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 13:57:24,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 13:57:24,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:24,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 13:57:24,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-07-21 13:57:24,802 INFO L87 Difference]: Start difference. First operand 25109 states and 35188 transitions. Second operand has 22 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 6 states have call successors, (64), 3 states have call predecessors, (64), 8 states have return successors, (63), 7 states have call predecessors, (63), 6 states have call successors, (63) [2022-07-21 13:57:46,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:46,999 INFO L93 Difference]: Finished difference Result 65021 states and 91035 transitions. [2022-07-21 13:57:46,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 13:57:46,999 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 6 states have call successors, (64), 3 states have call predecessors, (64), 8 states have return successors, (63), 7 states have call predecessors, (63), 6 states have call successors, (63) Word has length 372 [2022-07-21 13:57:47,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:47,118 INFO L225 Difference]: With dead ends: 65021 [2022-07-21 13:57:47,118 INFO L226 Difference]: Without dead ends: 40939 [2022-07-21 13:57:47,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2022-07-21 13:57:47,172 INFO L413 NwaCegarLoop]: 4553 mSDtfsCounter, 8011 mSDsluCounter, 70255 mSDsCounter, 0 mSdLazyCounter, 5261 mSolverCounterSat, 1242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8200 SdHoareTripleChecker+Valid, 74808 SdHoareTripleChecker+Invalid, 6503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1242 IncrementalHoareTripleChecker+Valid, 5261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:47,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8200 Valid, 74808 Invalid, 6503 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1242 Valid, 5261 Invalid, 0 Unknown, 0 Unchecked, 18.9s Time] [2022-07-21 13:57:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40939 states. [2022-07-21 13:57:48,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40939 to 33016. [2022-07-21 13:57:48,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33016 states, 24303 states have (on average 1.333415627700284) internal successors, (32406), 24428 states have internal predecessors, (32406), 6914 states have call successors, (6914), 1797 states have call predecessors, (6914), 1796 states have return successors, (6910), 6839 states have call predecessors, (6910), 6910 states have call successors, (6910) [2022-07-21 13:57:48,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33016 states to 33016 states and 46230 transitions. [2022-07-21 13:57:48,590 INFO L78 Accepts]: Start accepts. Automaton has 33016 states and 46230 transitions. Word has length 372 [2022-07-21 13:57:48,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:48,591 INFO L495 AbstractCegarLoop]: Abstraction has 33016 states and 46230 transitions. [2022-07-21 13:57:48,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 6 states have call successors, (64), 3 states have call predecessors, (64), 8 states have return successors, (63), 7 states have call predecessors, (63), 6 states have call successors, (63) [2022-07-21 13:57:48,591 INFO L276 IsEmpty]: Start isEmpty. Operand 33016 states and 46230 transitions. [2022-07-21 13:57:48,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-07-21 13:57:48,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:48,597 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 11, 10, 10, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:57:48,639 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 13:57:48,823 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 13:57:48,824 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:57:48,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1001344556, now seen corresponding path program 1 times [2022-07-21 13:57:48,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:48,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092066835] [2022-07-21 13:57:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:48,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:48,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:48,827 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 13:57:48,828 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 13:57:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:50,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 2117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:57:50,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2022-07-21 13:57:52,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:57:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1827 trivial. 0 not checked. [2022-07-21 13:57:52,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:52,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092066835] [2022-07-21 13:57:52,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092066835] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:57:52,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:57:52,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:57:52,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129094331] [2022-07-21 13:57:52,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:52,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:57:52,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:52,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:57:52,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:57:52,937 INFO L87 Difference]: Start difference. First operand 33016 states and 46230 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-21 13:57:54,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:57:54,035 INFO L93 Difference]: Finished difference Result 33022 states and 46235 transitions. [2022-07-21 13:57:54,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:57:54,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 337 [2022-07-21 13:57:54,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:57:54,139 INFO L225 Difference]: With dead ends: 33022 [2022-07-21 13:57:54,140 INFO L226 Difference]: Without dead ends: 33018 [2022-07-21 13:57:54,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:57:54,158 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 2304 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 13:57:54,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 7145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 13:57:54,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33018 states. [2022-07-21 13:57:55,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33018 to 33018. [2022-07-21 13:57:55,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33018 states, 24305 states have (on average 1.3333470479325242) internal successors, (32407), 24429 states have internal predecessors, (32407), 6914 states have call successors, (6914), 1798 states have call predecessors, (6914), 1796 states have return successors, (6910), 6839 states have call predecessors, (6910), 6910 states have call successors, (6910) [2022-07-21 13:57:55,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33018 states to 33018 states and 46231 transitions. [2022-07-21 13:57:55,457 INFO L78 Accepts]: Start accepts. Automaton has 33018 states and 46231 transitions. Word has length 337 [2022-07-21 13:57:55,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:57:55,458 INFO L495 AbstractCegarLoop]: Abstraction has 33018 states and 46231 transitions. [2022-07-21 13:57:55,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-21 13:57:55,458 INFO L276 IsEmpty]: Start isEmpty. Operand 33018 states and 46231 transitions. [2022-07-21 13:57:55,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-07-21 13:57:55,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:57:55,465 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 18, 18, 18, 18, 18, 18, 8, 8, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:57:55,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-21 13:57:55,691 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 13:57:55,692 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 13:57:55,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:57:55,692 INFO L85 PathProgramCache]: Analyzing trace with hash -263964520, now seen corresponding path program 1 times [2022-07-21 13:57:55,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:57:55,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298996384] [2022-07-21 13:57:55,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:57:55,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:57:55,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:57:55,695 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 13:57:55,697 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 13:57:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:57:57,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:57:57,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:57:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 1623 trivial. 0 not checked. [2022-07-21 13:57:57,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:57:57,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:57:57,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298996384] [2022-07-21 13:57:57,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298996384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:57:57,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:57:57,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:57:57,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912020578] [2022-07-21 13:57:57,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:57:57,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:57:57,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:57:57,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:57:57,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:57:57,782 INFO L87 Difference]: Start difference. First operand 33018 states and 46231 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-07-21 13:58:00,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:58:00,049 INFO L93 Difference]: Finished difference Result 96539 states and 135203 transitions. [2022-07-21 13:58:00,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:58:00,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) Word has length 463 [2022-07-21 13:58:00,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:58:00,249 INFO L225 Difference]: With dead ends: 96539 [2022-07-21 13:58:00,250 INFO L226 Difference]: Without dead ends: 63491 [2022-07-21 13:58:00,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:58:00,328 INFO L413 NwaCegarLoop]: 3488 mSDtfsCounter, 2302 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2302 SdHoareTripleChecker+Valid, 5854 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:58:00,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2302 Valid, 5854 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:58:00,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63491 states. [2022-07-21 13:58:03,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63491 to 63410. [2022-07-21 13:58:03,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63410 states, 46739 states have (on average 1.3334046513618178) internal successors, (62322), 46955 states have internal predecessors, (62322), 13221 states have call successors, (13221), 3457 states have call predecessors, (13221), 3447 states have return successors, (13217), 13093 states have call predecessors, (13217), 13217 states have call successors, (13217) [2022-07-21 13:58:03,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63410 states to 63410 states and 88760 transitions. [2022-07-21 13:58:03,413 INFO L78 Accepts]: Start accepts. Automaton has 63410 states and 88760 transitions. Word has length 463 [2022-07-21 13:58:03,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:58:03,414 INFO L495 AbstractCegarLoop]: Abstraction has 63410 states and 88760 transitions. [2022-07-21 13:58:03,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (39), 3 states have call predecessors, (39), 3 states have call successors, (39) [2022-07-21 13:58:03,414 INFO L276 IsEmpty]: Start isEmpty. Operand 63410 states and 88760 transitions. [2022-07-21 13:58:03,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-07-21 13:58:03,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:58:03,419 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 18, 18, 18, 18, 18, 18, 12, 11, 11, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:58:03,471 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 13:58:03,622 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 13:58:03,623 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-21 13:58:03,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:58:03,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1535937501, now seen corresponding path program 1 times [2022-07-21 13:58:03,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:58:03,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713425255] [2022-07-21 13:58:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:58:03,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:58:03,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:58:03,627 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 13:58:03,629 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 13:58:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:58:04,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 2124 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 13:58:04,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:58:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1889 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1867 trivial. 0 not checked. [2022-07-21 13:58:07,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 13:58:07,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1889 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1867 trivial. 0 not checked. [2022-07-21 13:58:07,834 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:58:07,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713425255] [2022-07-21 13:58:07,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713425255] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 13:58:07,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 13:58:07,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-21 13:58:07,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332100094] [2022-07-21 13:58:07,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:58:07,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 13:58:07,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:58:07,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 13:58:07,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 13:58:07,835 INFO L87 Difference]: Start difference. First operand 63410 states and 88760 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-21 13:58:10,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:58:10,120 INFO L93 Difference]: Finished difference Result 63410 states and 88760 transitions. [2022-07-21 13:58:10,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 13:58:10,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 342 [2022-07-21 13:58:10,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:58:10,306 INFO L225 Difference]: With dead ends: 63410 [2022-07-21 13:58:10,306 INFO L226 Difference]: Without dead ends: 62912 [2022-07-21 13:58:10,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-21 13:58:10,329 INFO L413 NwaCegarLoop]: 2386 mSDtfsCounter, 2300 mSDsluCounter, 4756 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2300 SdHoareTripleChecker+Valid, 7142 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 13:58:10,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2300 Valid, 7142 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 13:58:10,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62912 states. [2022-07-21 13:58:12,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62912 to 47565. [2022-07-21 13:58:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47565 states, 35082 states have (on average 1.3329912775782453) internal successors, (46764), 35218 states have internal predecessors, (46764), 9892 states have call successors, (9892), 2589 states have call predecessors, (9892), 2589 states have return successors, (9892), 9829 states have call predecessors, (9892), 9892 states have call successors, (9892) [2022-07-21 13:58:12,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47565 states to 47565 states and 66548 transitions. [2022-07-21 13:58:12,772 INFO L78 Accepts]: Start accepts. Automaton has 47565 states and 66548 transitions. Word has length 342 [2022-07-21 13:58:12,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:58:12,773 INFO L495 AbstractCegarLoop]: Abstraction has 47565 states and 66548 transitions. [2022-07-21 13:58:12,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-21 13:58:12,773 INFO L276 IsEmpty]: Start isEmpty. Operand 47565 states and 66548 transitions. [2022-07-21 13:58:12,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-07-21 13:58:12,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:58:12,782 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 18, 18, 18, 18, 18, 18, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:58:12,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-07-21 13:58:13,007 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 13:58:13,008 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 13:58:13,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:58:13,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1473888471, now seen corresponding path program 1 times [2022-07-21 13:58:13,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:58:13,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921119365] [2022-07-21 13:58:13,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:58:13,011 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:58:13,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:58:13,012 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 13:58:13,013 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 13:58:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:58:14,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 2247 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:58:14,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:58:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2022-07-21 13:58:14,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:58:14,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:58:14,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921119365] [2022-07-21 13:58:14,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921119365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:58:14,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:58:14,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:58:14,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912464714] [2022-07-21 13:58:14,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:58:14,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:58:14,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:58:14,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:58:14,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:58:14,507 INFO L87 Difference]: Start difference. First operand 47565 states and 66548 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-07-21 13:58:17,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:58:17,418 INFO L93 Difference]: Finished difference Result 110510 states and 154682 transitions. [2022-07-21 13:58:17,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:58:17,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 357 [2022-07-21 13:58:17,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:58:17,686 INFO L225 Difference]: With dead ends: 110510 [2022-07-21 13:58:17,687 INFO L226 Difference]: Without dead ends: 62916 [2022-07-21 13:58:17,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:58:17,817 INFO L413 NwaCegarLoop]: 4474 mSDtfsCounter, 2190 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2190 SdHoareTripleChecker+Valid, 6782 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 13:58:17,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2190 Valid, 6782 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 13:58:17,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62916 states. [2022-07-21 13:58:20,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62916 to 47565. [2022-07-21 13:58:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47565 states, 35082 states have (on average 1.332962772931988) internal successors, (46763), 35218 states have internal predecessors, (46763), 9892 states have call successors, (9892), 2589 states have call predecessors, (9892), 2589 states have return successors, (9892), 9829 states have call predecessors, (9892), 9892 states have call successors, (9892) [2022-07-21 13:58:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47565 states to 47565 states and 66547 transitions. [2022-07-21 13:58:20,778 INFO L78 Accepts]: Start accepts. Automaton has 47565 states and 66547 transitions. Word has length 357 [2022-07-21 13:58:20,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 13:58:20,779 INFO L495 AbstractCegarLoop]: Abstraction has 47565 states and 66547 transitions. [2022-07-21 13:58:20,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-07-21 13:58:20,779 INFO L276 IsEmpty]: Start isEmpty. Operand 47565 states and 66547 transitions. [2022-07-21 13:58:20,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2022-07-21 13:58:20,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 13:58:20,789 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 18, 18, 18, 18, 18, 18, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 13:58:20,839 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 13:58:21,015 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 13:58:21,016 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 13:58:21,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 13:58:21,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1056491865, now seen corresponding path program 1 times [2022-07-21 13:58:21,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 13:58:21,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988029300] [2022-07-21 13:58:21,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 13:58:21,018 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 13:58:21,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 13:58:21,019 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 13:58:21,021 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 13:58:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 13:58:22,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 2247 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 13:58:22,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 13:58:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 1728 trivial. 0 not checked. [2022-07-21 13:58:22,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 13:58:22,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 13:58:22,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988029300] [2022-07-21 13:58:22,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988029300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 13:58:22,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 13:58:22,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 13:58:22,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613834426] [2022-07-21 13:58:22,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 13:58:22,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 13:58:22,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 13:58:22,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 13:58:22,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:58:22,621 INFO L87 Difference]: Start difference. First operand 47565 states and 66547 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2022-07-21 13:58:25,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 13:58:25,835 INFO L93 Difference]: Finished difference Result 110578 states and 154811 transitions. [2022-07-21 13:58:25,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 13:58:25,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (36), 3 states have call predecessors, (36), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 357 [2022-07-21 13:58:25,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 13:58:26,065 INFO L225 Difference]: With dead ends: 110578 [2022-07-21 13:58:26,065 INFO L226 Difference]: Without dead ends: 63103 [2022-07-21 13:58:26,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 13:58:26,184 INFO L413 NwaCegarLoop]: 4527 mSDtfsCounter, 2196 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2196 SdHoareTripleChecker+Valid, 6831 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 13:58:26,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2196 Valid, 6831 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 13:58:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63103 states.