./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 24362a0e750636c52038fc4d3468ffab15d6b74376c584ca05819f34fdf58260 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 02:38:59,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 02:38:59,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 02:38:59,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 02:38:59,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 02:38:59,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 02:38:59,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 02:38:59,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 02:38:59,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 02:38:59,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 02:38:59,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 02:38:59,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 02:38:59,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 02:38:59,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 02:38:59,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 02:38:59,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 02:38:59,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 02:38:59,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 02:38:59,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 02:38:59,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 02:38:59,913 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 02:38:59,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 02:38:59,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 02:38:59,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 02:38:59,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 02:38:59,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 02:38:59,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 02:38:59,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 02:38:59,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 02:38:59,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 02:38:59,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 02:38:59,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 02:38:59,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 02:38:59,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 02:38:59,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 02:38:59,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 02:38:59,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 02:38:59,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 02:38:59,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 02:38:59,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 02:38:59,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 02:38:59,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 02:38:59,931 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-23 02:38:59,958 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 02:38:59,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 02:38:59,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 02:38:59,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 02:38:59,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 02:38:59,960 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 02:38:59,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 02:38:59,961 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 02:38:59,961 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 02:38:59,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 02:38:59,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 02:38:59,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 02:38:59,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 02:38:59,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 02:38:59,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 02:38:59,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 02:38:59,962 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 02:38:59,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 02:38:59,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 02:38:59,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 02:38:59,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 02:38:59,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 02:38:59,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 02:38:59,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 02:38:59,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 02:38:59,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 02:38:59,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 02:38:59,964 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 02:38:59,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 02:38:59,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 02:38:59,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24362a0e750636c52038fc4d3468ffab15d6b74376c584ca05819f34fdf58260 [2022-07-23 02:39:00,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 02:39:00,194 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 02:39:00,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 02:39:00,197 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 02:39:00,197 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 02:39:00,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i [2022-07-23 02:39:00,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ad8b4b1/414f526e04fa45219449b918e43df70d/FLAG83ba293c8 [2022-07-23 02:39:00,880 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 02:39:00,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i [2022-07-23 02:39:00,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ad8b4b1/414f526e04fa45219449b918e43df70d/FLAG83ba293c8 [2022-07-23 02:39:01,284 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56ad8b4b1/414f526e04fa45219449b918e43df70d [2022-07-23 02:39:01,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 02:39:01,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 02:39:01,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 02:39:01,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 02:39:01,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 02:39:01,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:39:01" (1/1) ... [2022-07-23 02:39:01,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c4facb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:39:01, skipping insertion in model container [2022-07-23 02:39:01,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:39:01" (1/1) ... [2022-07-23 02:39:01,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 02:39:01,425 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 02:39:03,413 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[359515,359528] [2022-07-23 02:39:03,415 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[359684,359697] [2022-07-23 02:39:03,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[359851,359864] [2022-07-23 02:39:03,421 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[360019,360032] [2022-07-23 02:39:03,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 02:39:03,511 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 02:39:03,609 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) [2022-07-23 02:39:03,616 INFO L158 Benchmark]: Toolchain (without parser) took 2324.10ms. Allocated memory was 134.2MB in the beginning and 174.1MB in the end (delta: 39.8MB). Free memory was 88.0MB in the beginning and 87.9MB in the end (delta: 101.6kB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. [2022-07-23 02:39:03,617 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 81.8MB. Free memory was 38.7MB in the beginning and 38.6MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 02:39:03,618 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2315.10ms. Allocated memory was 134.2MB in the beginning and 174.1MB in the end (delta: 39.8MB). Free memory was 87.6MB in the beginning and 87.9MB in the end (delta: -283.6kB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. [2022-07-23 02:39:03,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 81.8MB. Free memory was 38.7MB in the beginning and 38.6MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2315.10ms. Allocated memory was 134.2MB in the beginning and 174.1MB in the end (delta: 39.8MB). Free memory was 87.6MB in the beginning and 87.9MB in the end (delta: -283.6kB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 24362a0e750636c52038fc4d3468ffab15d6b74376c584ca05819f34fdf58260 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 02:39:05,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 02:39:05,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 02:39:05,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 02:39:05,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 02:39:05,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 02:39:05,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 02:39:05,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 02:39:05,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 02:39:05,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 02:39:05,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 02:39:05,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 02:39:05,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 02:39:05,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 02:39:05,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 02:39:05,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 02:39:05,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 02:39:05,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 02:39:05,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 02:39:05,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 02:39:05,376 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 02:39:05,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 02:39:05,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 02:39:05,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 02:39:05,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 02:39:05,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 02:39:05,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 02:39:05,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 02:39:05,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 02:39:05,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 02:39:05,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 02:39:05,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 02:39:05,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 02:39:05,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 02:39:05,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 02:39:05,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 02:39:05,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 02:39:05,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 02:39:05,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 02:39:05,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 02:39:05,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 02:39:05,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 02:39:05,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-23 02:39:05,426 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 02:39:05,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 02:39:05,427 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 02:39:05,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 02:39:05,428 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 02:39:05,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 02:39:05,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 02:39:05,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 02:39:05,429 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 02:39:05,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 02:39:05,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 02:39:05,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 02:39:05,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 02:39:05,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 02:39:05,430 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 02:39:05,430 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-23 02:39:05,431 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-23 02:39:05,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 02:39:05,431 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 02:39:05,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 02:39:05,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 02:39:05,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 02:39:05,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 02:39:05,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 02:39:05,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 02:39:05,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 02:39:05,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 02:39:05,432 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-23 02:39:05,433 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-23 02:39:05,433 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 02:39:05,433 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 02:39:05,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 02:39:05,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-23 02:39:05,433 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24362a0e750636c52038fc4d3468ffab15d6b74376c584ca05819f34fdf58260 [2022-07-23 02:39:05,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 02:39:05,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 02:39:05,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 02:39:05,727 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 02:39:05,727 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 02:39:05,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i [2022-07-23 02:39:05,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9dc65a19/270fb98a41a94f7fb187a5f440eae63e/FLAG720e951ea [2022-07-23 02:39:06,433 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 02:39:06,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i [2022-07-23 02:39:06,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9dc65a19/270fb98a41a94f7fb187a5f440eae63e/FLAG720e951ea [2022-07-23 02:39:06,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9dc65a19/270fb98a41a94f7fb187a5f440eae63e [2022-07-23 02:39:06,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 02:39:06,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 02:39:06,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 02:39:06,814 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 02:39:06,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 02:39:06,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:39:06" (1/1) ... [2022-07-23 02:39:06,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c30ced2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:39:06, skipping insertion in model container [2022-07-23 02:39:06,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:39:06" (1/1) ... [2022-07-23 02:39:06,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 02:39:06,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 02:39:08,799 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[359515,359528] [2022-07-23 02:39:08,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[359684,359697] [2022-07-23 02:39:08,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[359851,359864] [2022-07-23 02:39:08,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[360019,360032] [2022-07-23 02:39:08,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 02:39:08,847 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-23 02:39:08,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 02:39:09,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[359515,359528] [2022-07-23 02:39:09,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[359684,359697] [2022-07-23 02:39:09,123 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[359851,359864] [2022-07-23 02:39:09,123 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[360019,360032] [2022-07-23 02:39:09,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 02:39:09,165 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 02:39:09,480 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[359515,359528] [2022-07-23 02:39:09,481 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[359684,359697] [2022-07-23 02:39:09,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[359851,359864] [2022-07-23 02:39:09,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[360019,360032] [2022-07-23 02:39:09,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 02:39:09,624 INFO L208 MainTranslator]: Completed translation [2022-07-23 02:39:09,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:39:09 WrapperNode [2022-07-23 02:39:09,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 02:39:09,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 02:39:09,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 02:39:09,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 02:39:09,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:39:09" (1/1) ... [2022-07-23 02:39:09,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:39:09" (1/1) ... [2022-07-23 02:39:09,873 INFO L137 Inliner]: procedures = 405, calls = 3756, calls flagged for inlining = 180, calls inlined = 163, statements flattened = 7511 [2022-07-23 02:39:09,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 02:39:09,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 02:39:09,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 02:39:09,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 02:39:09,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:39:09" (1/1) ... [2022-07-23 02:39:09,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:39:09" (1/1) ... [2022-07-23 02:39:09,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:39:09" (1/1) ... [2022-07-23 02:39:09,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:39:09" (1/1) ... [2022-07-23 02:39:10,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:39:09" (1/1) ... [2022-07-23 02:39:10,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:39:09" (1/1) ... [2022-07-23 02:39:10,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:39:09" (1/1) ... [2022-07-23 02:39:10,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 02:39:10,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 02:39:10,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 02:39:10,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 02:39:10,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:39:09" (1/1) ... [2022-07-23 02:39:10,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 02:39:10,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 02:39:10,129 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) [2022-07-23 02:39:10,183 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 [2022-07-23 02:39:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_write_reg_nopm [2022-07-23 02:39:10,224 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_write_reg_nopm [2022-07-23 02:39:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-23 02:39:10,224 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-23 02:39:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_nway_reset [2022-07-23 02:39:10,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_nway_reset [2022-07-23 02:39:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-23 02:39:10,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-23 02:39:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure smsc_crc [2022-07-23 02:39:10,225 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc_crc [2022-07-23 02:39:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-23 02:39:10,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-23 02:39:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-07-23 02:39:10,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-07-23 02:39:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_enable_phy_wakeup_interrupts [2022-07-23 02:39:10,225 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_enable_phy_wakeup_interrupts [2022-07-23 02:39:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_reset [2022-07-23 02:39:10,226 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_reset [2022-07-23 02:39:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_wait_eeprom [2022-07-23 02:39:10,226 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_wait_eeprom [2022-07-23 02:39:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc75xx_mdio_write [2022-07-23 02:39:10,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc75xx_mdio_write [2022-07-23 02:39:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-23 02:39:10,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-07-23 02:39:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2022-07-23 02:39:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-07-23 02:39:10,227 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-07-23 02:39:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_rx_csum_offload [2022-07-23 02:39:10,227 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_rx_csum_offload [2022-07-23 02:39:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-23 02:39:10,228 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-23 02:39:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-23 02:39:10,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-23 02:39:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 02:39:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_set_features [2022-07-23 02:39:10,228 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_set_features [2022-07-23 02:39:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-23 02:39:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-23 02:39:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-23 02:39:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-23 02:39:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2022-07-23 02:39:10,230 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2022-07-23 02:39:10,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-07-23 02:39:10,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-07-23 02:39:10,230 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2022-07-23 02:39:10,231 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2022-07-23 02:39:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_mdio_read_nopm [2022-07-23 02:39:10,231 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_mdio_read_nopm [2022-07-23 02:39:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-23 02:39:10,231 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-23 02:39:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2022-07-23 02:39:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc75xx_phy_wait_not_busy [2022-07-23 02:39:10,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc75xx_phy_wait_not_busy [2022-07-23 02:39:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-07-23 02:39:10,232 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-07-23 02:39:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_mdio_write [2022-07-23 02:39:10,232 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_mdio_write [2022-07-23 02:39:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2022-07-23 02:39:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-23 02:39:10,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-23 02:39:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 02:39:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-07-23 02:39:10,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-07-23 02:39:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-07-23 02:39:10,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-07-23 02:39:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 02:39:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-23 02:39:10,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-23 02:39:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-23 02:39:10,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-23 02:39:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 02:39:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-23 02:39:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-23 02:39:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-23 02:39:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2022-07-23 02:39:10,235 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2022-07-23 02:39:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_mdio_read [2022-07-23 02:39:10,235 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_mdio_read [2022-07-23 02:39:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_set_rx_max_frame_length [2022-07-23 02:39:10,235 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_set_rx_max_frame_length [2022-07-23 02:39:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-07-23 02:39:10,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-07-23 02:39:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-23 02:39:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 02:39:10,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 02:39:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc75xx_read_reg [2022-07-23 02:39:10,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc75xx_read_reg [2022-07-23 02:39:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-23 02:39:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-23 02:39:10,237 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-23 02:39:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-23 02:39:10,237 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-23 02:39:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_ethtool_get_eeprom_len [2022-07-23 02:39:10,237 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_ethtool_get_eeprom_len [2022-07-23 02:39:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-23 02:39:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-23 02:39:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-23 02:39:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-23 02:39:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-23 02:39:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-23 02:39:10,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-23 02:39:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smsc75xx_driver_exit_6_2 [2022-07-23 02:39:10,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smsc75xx_driver_exit_6_2 [2022-07-23 02:39:10,241 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-23 02:39:10,241 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-23 02:39:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-23 02:39:10,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-23 02:39:10,242 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_read_reg [2022-07-23 02:39:10,243 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_read_reg [2022-07-23 02:39:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2022-07-23 02:39:10,243 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2022-07-23 02:39:10,243 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-23 02:39:10,248 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-23 02:39:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_mdio_write_nopm [2022-07-23 02:39:10,248 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_mdio_write_nopm [2022-07-23 02:39:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_set_multicast [2022-07-23 02:39:10,248 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_set_multicast [2022-07-23 02:39:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 02:39:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-23 02:39:10,248 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-23 02:39:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 02:39:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-23 02:39:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-23 02:39:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-23 02:39:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-23 02:39:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-23 02:39:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-23 02:39:10,249 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-23 02:39:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-23 02:39:10,249 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-23 02:39:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc75xx_mdio_read [2022-07-23 02:39:10,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc75xx_mdio_read [2022-07-23 02:39:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-07-23 02:39:10,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-07-23 02:39:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-23 02:39:10,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-23 02:39:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_read_reg_nopm [2022-07-23 02:39:10,250 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_read_reg_nopm [2022-07-23 02:39:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-07-23 02:39:10,250 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-07-23 02:39:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc75xx_write_reg [2022-07-23 02:39:10,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc75xx_write_reg [2022-07-23 02:39:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_2_4 [2022-07-23 02:39:10,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_2_4 [2022-07-23 02:39:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-23 02:39:10,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-23 02:39:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_wait_ready [2022-07-23 02:39:10,251 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_wait_ready [2022-07-23 02:39:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-23 02:39:10,251 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-23 02:39:10,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-23 02:39:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-23 02:39:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-23 02:39:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-23 02:39:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_read_eeprom [2022-07-23 02:39:10,252 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_read_eeprom [2022-07-23 02:39:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-23 02:39:10,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-23 02:39:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2022-07-23 02:39:10,252 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_link_reset [2022-07-23 02:39:10,252 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_link_reset [2022-07-23 02:39:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_resume [2022-07-23 02:39:10,253 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_resume [2022-07-23 02:39:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_write_wuff [2022-07-23 02:39:10,253 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_write_wuff [2022-07-23 02:39:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_eeprom_confirm_not_busy [2022-07-23 02:39:10,253 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_eeprom_confirm_not_busy [2022-07-23 02:39:10,253 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 [2022-07-23 02:39:10,253 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 [2022-07-23 02:39:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-07-23 02:39:10,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-07-23 02:39:10,253 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_enter_suspend2 [2022-07-23 02:39:10,254 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_enter_suspend2 [2022-07-23 02:39:10,254 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_enter_suspend1 [2022-07-23 02:39:10,254 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_enter_suspend1 [2022-07-23 02:39:10,254 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_write_reg [2022-07-23 02:39:10,254 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_write_reg [2022-07-23 02:39:10,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rfe_ctl_lock_of_smsc75xx_priv [2022-07-23 02:39:10,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rfe_ctl_lock_of_smsc75xx_priv [2022-07-23 02:39:10,254 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-07-23 02:39:10,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-07-23 02:39:10,989 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 02:39:10,993 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 02:39:11,178 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-23 02:40:08,810 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-07-23 02:40:08,851 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 02:40:08,872 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 02:40:08,873 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-23 02:40:08,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:40:08 BoogieIcfgContainer [2022-07-23 02:40:08,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 02:40:08,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 02:40:08,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 02:40:08,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 02:40:08,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 02:39:06" (1/3) ... [2022-07-23 02:40:08,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f17991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 02:40:08, skipping insertion in model container [2022-07-23 02:40:08,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:39:09" (2/3) ... [2022-07-23 02:40:08,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f17991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 02:40:08, skipping insertion in model container [2022-07-23 02:40:08,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:40:08" (3/3) ... [2022-07-23 02:40:08,884 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i [2022-07-23 02:40:08,895 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 02:40:08,895 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-23 02:40:08,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 02:40:08,986 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@3650d4e5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6304960 [2022-07-23 02:40:08,986 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-23 02:40:08,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 1730 states, 1252 states have (on average 1.3594249201277955) internal successors, (1702), 1255 states have internal predecessors, (1702), 403 states have call successors, (403), 73 states have call predecessors, (403), 72 states have return successors, (396), 396 states have call predecessors, (396), 396 states have call successors, (396) [2022-07-23 02:40:09,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-23 02:40:09,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:40:09,074 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:40:09,075 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)] === [2022-07-23 02:40:09,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:40:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash -747547048, now seen corresponding path program 1 times [2022-07-23 02:40:09,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:40:09,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775012363] [2022-07-23 02:40:09,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:40:09,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:40:09,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:40:09,099 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) [2022-07-23 02:40:09,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-23 02:40:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:40:10,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 02:40:10,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:40:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2022-07-23 02:40:10,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 02:40:10,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:40:10,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775012363] [2022-07-23 02:40:10,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775012363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 02:40:10,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 02:40:10,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 02:40:10,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825111677] [2022-07-23 02:40:10,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:40:10,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 02:40:10,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:40:10,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 02:40:10,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 02:40:10,484 INFO L87 Difference]: Start difference. First operand has 1730 states, 1252 states have (on average 1.3594249201277955) internal successors, (1702), 1255 states have internal predecessors, (1702), 403 states have call successors, (403), 73 states have call predecessors, (403), 72 states have return successors, (396), 396 states have call predecessors, (396), 396 states have call successors, (396) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-23 02:40:10,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:40:10,933 INFO L93 Difference]: Finished difference Result 5006 states and 7625 transitions. [2022-07-23 02:40:10,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 02:40:10,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 217 [2022-07-23 02:40:10,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:40:10,964 INFO L225 Difference]: With dead ends: 5006 [2022-07-23 02:40:10,964 INFO L226 Difference]: Without dead ends: 3304 [2022-07-23 02:40:10,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 02:40:10,983 INFO L413 NwaCegarLoop]: 2842 mSDtfsCounter, 2317 mSDsluCounter, 2426 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 5268 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 02:40:10,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2317 Valid, 5268 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 02:40:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2022-07-23 02:40:11,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 3300. [2022-07-23 02:40:11,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 2416 states have (on average 1.3555463576158941) internal successors, (3275), 2421 states have internal predecessors, (3275), 741 states have call successors, (741), 141 states have call predecessors, (741), 140 states have return successors, (737), 737 states have call predecessors, (737), 737 states have call successors, (737) [2022-07-23 02:40:11,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4753 transitions. [2022-07-23 02:40:11,168 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4753 transitions. Word has length 217 [2022-07-23 02:40:11,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:40:11,169 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 4753 transitions. [2022-07-23 02:40:11,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-23 02:40:11,170 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4753 transitions. [2022-07-23 02:40:11,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-23 02:40:11,175 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:40:11,175 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:40:11,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-23 02:40:11,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:40:11,403 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)] === [2022-07-23 02:40:11,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:40:11,404 INFO L85 PathProgramCache]: Analyzing trace with hash 379538310, now seen corresponding path program 1 times [2022-07-23 02:40:11,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:40:11,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320647020] [2022-07-23 02:40:11,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:40:11,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:40:11,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:40:11,420 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) [2022-07-23 02:40:11,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-23 02:40:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:40:12,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 02:40:12,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:40:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2022-07-23 02:40:12,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 02:40:12,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:40:12,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320647020] [2022-07-23 02:40:12,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320647020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 02:40:12,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 02:40:12,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 02:40:12,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793358782] [2022-07-23 02:40:12,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:40:12,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 02:40:12,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:40:12,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 02:40:12,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 02:40:12,640 INFO L87 Difference]: Start difference. First operand 3300 states and 4753 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-23 02:40:13,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:40:13,322 INFO L93 Difference]: Finished difference Result 7817 states and 11269 transitions. [2022-07-23 02:40:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 02:40:13,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 228 [2022-07-23 02:40:13,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:40:13,357 INFO L225 Difference]: With dead ends: 7817 [2022-07-23 02:40:13,357 INFO L226 Difference]: Without dead ends: 4556 [2022-07-23 02:40:13,365 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 [2022-07-23 02:40:13,366 INFO L413 NwaCegarLoop]: 2946 mSDtfsCounter, 2091 mSDsluCounter, 2385 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 5331 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 02:40:13,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 5331 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 02:40:13,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2022-07-23 02:40:13,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 4529. [2022-07-23 02:40:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4529 states, 3275 states have (on average 1.3578625954198473) internal successors, (4447), 3285 states have internal predecessors, (4447), 1042 states have call successors, (1042), 210 states have call predecessors, (1042), 209 states have return successors, (1038), 1033 states have call predecessors, (1038), 1038 states have call successors, (1038) [2022-07-23 02:40:13,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 6527 transitions. [2022-07-23 02:40:13,494 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 6527 transitions. Word has length 228 [2022-07-23 02:40:13,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:40:13,494 INFO L495 AbstractCegarLoop]: Abstraction has 4529 states and 6527 transitions. [2022-07-23 02:40:13,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-23 02:40:13,495 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 6527 transitions. [2022-07-23 02:40:13,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-07-23 02:40:13,500 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:40:13,500 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:40:13,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-23 02:40:13,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:40:13,735 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)] === [2022-07-23 02:40:13,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:40:13,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1569969785, now seen corresponding path program 1 times [2022-07-23 02:40:13,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:40:13,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100668083] [2022-07-23 02:40:13,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:40:13,737 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:40:13,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:40:13,759 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) [2022-07-23 02:40:13,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-23 02:40:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:40:14,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 1943 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 02:40:14,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:40:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 1398 trivial. 0 not checked. [2022-07-23 02:40:14,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 02:40:14,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:40:14,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100668083] [2022-07-23 02:40:14,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100668083] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 02:40:14,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 02:40:14,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 02:40:14,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007869361] [2022-07-23 02:40:14,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:40:14,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 02:40:14,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:40:14,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 02:40:14,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 02:40:14,954 INFO L87 Difference]: Start difference. First operand 4529 states and 6527 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-23 02:40:15,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:40:15,454 INFO L93 Difference]: Finished difference Result 10620 states and 15308 transitions. [2022-07-23 02:40:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 02:40:15,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 276 [2022-07-23 02:40:15,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:40:15,497 INFO L225 Difference]: With dead ends: 10620 [2022-07-23 02:40:15,498 INFO L226 Difference]: Without dead ends: 7492 [2022-07-23 02:40:15,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 02:40:15,516 INFO L413 NwaCegarLoop]: 4745 mSDtfsCounter, 2278 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 7179 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 02:40:15,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 7179 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 02:40:15,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7492 states. [2022-07-23 02:40:15,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7492 to 7488. [2022-07-23 02:40:15,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7488 states, 5440 states have (on average 1.3597426470588236) internal successors, (7397), 5450 states have internal predecessors, (7397), 1700 states have call successors, (1700), 346 states have call predecessors, (1700), 345 states have return successors, (1696), 1691 states have call predecessors, (1696), 1696 states have call successors, (1696) [2022-07-23 02:40:15,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7488 states to 7488 states and 10793 transitions. [2022-07-23 02:40:15,822 INFO L78 Accepts]: Start accepts. Automaton has 7488 states and 10793 transitions. Word has length 276 [2022-07-23 02:40:15,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:40:15,847 INFO L495 AbstractCegarLoop]: Abstraction has 7488 states and 10793 transitions. [2022-07-23 02:40:15,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-23 02:40:15,848 INFO L276 IsEmpty]: Start isEmpty. Operand 7488 states and 10793 transitions. [2022-07-23 02:40:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-07-23 02:40:15,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:40:15,853 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:40:15,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-23 02:40:16,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:40:16,071 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)] === [2022-07-23 02:40:16,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:40:16,072 INFO L85 PathProgramCache]: Analyzing trace with hash -801769477, now seen corresponding path program 1 times [2022-07-23 02:40:16,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:40:16,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572707462] [2022-07-23 02:40:16,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:40:16,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:40:16,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:40:16,075 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) [2022-07-23 02:40:16,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-23 02:40:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:40:17,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 1943 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:40:17,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:40:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2022-07-23 02:40:18,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 02:40:18,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:40:18,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572707462] [2022-07-23 02:40:18,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572707462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 02:40:18,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 02:40:18,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 02:40:18,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673739253] [2022-07-23 02:40:18,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:40:18,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:40:18,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:40:18,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:40:18,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 02:40:18,230 INFO L87 Difference]: Start difference. First operand 7488 states and 10793 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-07-23 02:40:18,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:40:18,493 INFO L93 Difference]: Finished difference Result 7494 states and 10798 transitions. [2022-07-23 02:40:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 02:40:18,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 276 [2022-07-23 02:40:18,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:40:18,529 INFO L225 Difference]: With dead ends: 7494 [2022-07-23 02:40:18,529 INFO L226 Difference]: Without dead ends: 7492 [2022-07-23 02:40:18,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-23 02:40:18,537 INFO L413 NwaCegarLoop]: 2464 mSDtfsCounter, 2359 mSDsluCounter, 4916 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 7380 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 02:40:18,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 7380 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 02:40:18,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7492 states. [2022-07-23 02:40:18,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7492 to 7492. [2022-07-23 02:40:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7492 states, 5443 states have (on average 1.3595443689142017) internal successors, (7400), 5453 states have internal predecessors, (7400), 1700 states have call successors, (1700), 347 states have call predecessors, (1700), 346 states have return successors, (1696), 1691 states have call predecessors, (1696), 1696 states have call successors, (1696) [2022-07-23 02:40:18,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7492 states to 7492 states and 10796 transitions. [2022-07-23 02:40:18,766 INFO L78 Accepts]: Start accepts. Automaton has 7492 states and 10796 transitions. Word has length 276 [2022-07-23 02:40:18,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:40:18,766 INFO L495 AbstractCegarLoop]: Abstraction has 7492 states and 10796 transitions. [2022-07-23 02:40:18,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2022-07-23 02:40:18,767 INFO L276 IsEmpty]: Start isEmpty. Operand 7492 states and 10796 transitions. [2022-07-23 02:40:18,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-07-23 02:40:18,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:40:18,772 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:40:18,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-23 02:40:18,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:40:18,999 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)] === [2022-07-23 02:40:19,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:40:19,000 INFO L85 PathProgramCache]: Analyzing trace with hash -66650535, now seen corresponding path program 1 times [2022-07-23 02:40:19,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:40:19,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814906481] [2022-07-23 02:40:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:40:19,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:40:19,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:40:19,003 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) [2022-07-23 02:40:19,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-23 02:40:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:40:20,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:40:20,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:40:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1484 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2022-07-23 02:40:21,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 02:40:21,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1484 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2022-07-23 02:40:21,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:40:21,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814906481] [2022-07-23 02:40:21,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814906481] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 02:40:21,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 02:40:21,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-23 02:40:21,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852931730] [2022-07-23 02:40:21,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:40:21,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:40:21,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:40:21,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:40:21,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 02:40:21,753 INFO L87 Difference]: Start difference. First operand 7492 states and 10796 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-23 02:40:22,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:40:22,061 INFO L93 Difference]: Finished difference Result 7498 states and 10801 transitions. [2022-07-23 02:40:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 02:40:22,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 281 [2022-07-23 02:40:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:40:22,130 INFO L225 Difference]: With dead ends: 7498 [2022-07-23 02:40:22,131 INFO L226 Difference]: Without dead ends: 7496 [2022-07-23 02:40:22,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-23 02:40:22,139 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2395 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 02:40:22,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2395 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 02:40:22,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7496 states. [2022-07-23 02:40:22,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7496 to 7496. [2022-07-23 02:40:22,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 5446 states have (on average 1.3593463092177744) internal successors, (7403), 5456 states have internal predecessors, (7403), 1700 states have call successors, (1700), 348 states have call predecessors, (1700), 347 states have return successors, (1696), 1691 states have call predecessors, (1696), 1696 states have call successors, (1696) [2022-07-23 02:40:22,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 10799 transitions. [2022-07-23 02:40:22,488 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 10799 transitions. Word has length 281 [2022-07-23 02:40:22,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:40:22,489 INFO L495 AbstractCegarLoop]: Abstraction has 7496 states and 10799 transitions. [2022-07-23 02:40:22,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-23 02:40:22,489 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 10799 transitions. [2022-07-23 02:40:22,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-07-23 02:40:22,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:40:22,496 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:40:22,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-23 02:40:22,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:40:22,719 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)] === [2022-07-23 02:40:22,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:40:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1752062587, now seen corresponding path program 1 times [2022-07-23 02:40:22,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:40:22,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330738221] [2022-07-23 02:40:22,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:40:22,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:40:22,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:40:22,732 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) [2022-07-23 02:40:22,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-23 02:40:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:40:23,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:40:23,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:40:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1490 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2022-07-23 02:40:25,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 02:40:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1490 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2022-07-23 02:40:25,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:40:25,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330738221] [2022-07-23 02:40:25,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330738221] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 02:40:25,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 02:40:25,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-23 02:40:25,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868898251] [2022-07-23 02:40:25,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:40:25,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:40:25,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:40:25,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:40:25,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 02:40:25,802 INFO L87 Difference]: Start difference. First operand 7496 states and 10799 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-23 02:40:26,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:40:26,021 INFO L93 Difference]: Finished difference Result 7502 states and 10804 transitions. [2022-07-23 02:40:26,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 02:40:26,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 286 [2022-07-23 02:40:26,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:40:26,051 INFO L225 Difference]: With dead ends: 7502 [2022-07-23 02:40:26,051 INFO L226 Difference]: Without dead ends: 7500 [2022-07-23 02:40:26,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-23 02:40:26,060 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2394 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 02:40:26,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2394 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 02:40:26,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7500 states. [2022-07-23 02:40:26,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7500 to 7500. [2022-07-23 02:40:26,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7500 states, 5449 states have (on average 1.3591484676087355) internal successors, (7406), 5459 states have internal predecessors, (7406), 1700 states have call successors, (1700), 349 states have call predecessors, (1700), 348 states have return successors, (1696), 1691 states have call predecessors, (1696), 1696 states have call successors, (1696) [2022-07-23 02:40:26,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7500 states to 7500 states and 10802 transitions. [2022-07-23 02:40:26,303 INFO L78 Accepts]: Start accepts. Automaton has 7500 states and 10802 transitions. Word has length 286 [2022-07-23 02:40:26,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:40:26,304 INFO L495 AbstractCegarLoop]: Abstraction has 7500 states and 10802 transitions. [2022-07-23 02:40:26,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-23 02:40:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 7500 states and 10802 transitions. [2022-07-23 02:40:26,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-07-23 02:40:26,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:40:26,312 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:40:26,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-23 02:40:26,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:40:26,539 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)] === [2022-07-23 02:40:26,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:40:26,540 INFO L85 PathProgramCache]: Analyzing trace with hash -906189480, now seen corresponding path program 1 times [2022-07-23 02:40:26,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:40:26,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729191150] [2022-07-23 02:40:26,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:40:26,541 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:40:26,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:40:26,543 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) [2022-07-23 02:40:26,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-23 02:40:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:40:27,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2006 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 02:40:27,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:40:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1509 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2022-07-23 02:40:27,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 02:40:27,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:40:27,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729191150] [2022-07-23 02:40:27,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729191150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 02:40:27,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 02:40:27,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 02:40:27,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287478273] [2022-07-23 02:40:27,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:40:27,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 02:40:27,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:40:27,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 02:40:27,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 02:40:27,669 INFO L87 Difference]: Start difference. First operand 7500 states and 10802 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-23 02:40:28,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:40:28,111 INFO L93 Difference]: Finished difference Result 16594 states and 23899 transitions. [2022-07-23 02:40:28,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 02:40:28,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 300 [2022-07-23 02:40:28,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:40:28,152 INFO L225 Difference]: With dead ends: 16594 [2022-07-23 02:40:28,152 INFO L226 Difference]: Without dead ends: 10495 [2022-07-23 02:40:28,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 02:40:28,179 INFO L413 NwaCegarLoop]: 4757 mSDtfsCounter, 2311 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2311 SdHoareTripleChecker+Valid, 7193 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 02:40:28,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2311 Valid, 7193 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 02:40:28,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10495 states. [2022-07-23 02:40:28,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10495 to 10461. [2022-07-23 02:40:28,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10461 states, 7616 states have (on average 1.360031512605042) internal successors, (10358), 7626 states have internal predecessors, (10358), 2358 states have call successors, (2358), 485 states have call predecessors, (2358), 484 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-23 02:40:28,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10461 states to 10461 states and 15070 transitions. [2022-07-23 02:40:28,591 INFO L78 Accepts]: Start accepts. Automaton has 10461 states and 15070 transitions. Word has length 300 [2022-07-23 02:40:28,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:40:28,593 INFO L495 AbstractCegarLoop]: Abstraction has 10461 states and 15070 transitions. [2022-07-23 02:40:28,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-23 02:40:28,593 INFO L276 IsEmpty]: Start isEmpty. Operand 10461 states and 15070 transitions. [2022-07-23 02:40:28,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-23 02:40:28,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:40:28,600 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:40:28,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-23 02:40:28,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:40:28,811 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)] === [2022-07-23 02:40:28,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:40:28,812 INFO L85 PathProgramCache]: Analyzing trace with hash -597533863, now seen corresponding path program 1 times [2022-07-23 02:40:28,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:40:28,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111761052] [2022-07-23 02:40:28,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:40:28,814 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:40:28,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:40:28,815 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) [2022-07-23 02:40:28,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-23 02:40:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:40:29,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 1964 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:40:29,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:40:30,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1494 trivial. 0 not checked. [2022-07-23 02:40:30,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 02:40:31,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1494 trivial. 0 not checked. [2022-07-23 02:40:31,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:40:31,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111761052] [2022-07-23 02:40:31,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111761052] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 02:40:31,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 02:40:31,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-23 02:40:31,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018000777] [2022-07-23 02:40:31,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:40:31,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:40:31,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:40:31,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:40:31,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 02:40:31,271 INFO L87 Difference]: Start difference. First operand 10461 states and 15070 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-23 02:40:31,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:40:31,611 INFO L93 Difference]: Finished difference Result 10467 states and 15075 transitions. [2022-07-23 02:40:31,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 02:40:31,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 291 [2022-07-23 02:40:31,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:40:31,648 INFO L225 Difference]: With dead ends: 10467 [2022-07-23 02:40:31,649 INFO L226 Difference]: Without dead ends: 10465 [2022-07-23 02:40:31,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-23 02:40:31,656 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2393 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 02:40:31,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2393 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 02:40:31,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10465 states. [2022-07-23 02:40:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10465 to 10465. [2022-07-23 02:40:31,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10465 states, 7619 states have (on average 1.3598897493109332) internal successors, (10361), 7629 states have internal predecessors, (10361), 2358 states have call successors, (2358), 486 states have call predecessors, (2358), 485 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-23 02:40:32,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10465 states to 10465 states and 15073 transitions. [2022-07-23 02:40:32,030 INFO L78 Accepts]: Start accepts. Automaton has 10465 states and 15073 transitions. Word has length 291 [2022-07-23 02:40:32,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:40:32,031 INFO L495 AbstractCegarLoop]: Abstraction has 10465 states and 15073 transitions. [2022-07-23 02:40:32,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-23 02:40:32,031 INFO L276 IsEmpty]: Start isEmpty. Operand 10465 states and 15073 transitions. [2022-07-23 02:40:32,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-07-23 02:40:32,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:40:32,039 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:40:32,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-23 02:40:32,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:40:32,259 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)] === [2022-07-23 02:40:32,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:40:32,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1004489979, now seen corresponding path program 1 times [2022-07-23 02:40:32,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:40:32,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238783712] [2022-07-23 02:40:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:40:32,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:40:32,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:40:32,263 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) [2022-07-23 02:40:32,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-23 02:40:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:40:33,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1971 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:40:33,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:40:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-07-23 02:40:34,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 02:40:35,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-07-23 02:40:35,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:40:35,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238783712] [2022-07-23 02:40:35,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238783712] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 02:40:35,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 02:40:35,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-23 02:40:35,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569459812] [2022-07-23 02:40:35,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:40:35,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:40:35,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:40:35,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:40:35,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 02:40:35,643 INFO L87 Difference]: Start difference. First operand 10465 states and 15073 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-23 02:40:36,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:40:36,028 INFO L93 Difference]: Finished difference Result 10471 states and 15078 transitions. [2022-07-23 02:40:36,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 02:40:36,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 296 [2022-07-23 02:40:36,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:40:36,067 INFO L225 Difference]: With dead ends: 10471 [2022-07-23 02:40:36,067 INFO L226 Difference]: Without dead ends: 10469 [2022-07-23 02:40:36,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-23 02:40:36,076 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2392 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 02:40:36,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2392 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 02:40:36,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10469 states. [2022-07-23 02:40:36,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10469 to 10469. [2022-07-23 02:40:36,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10469 states, 7622 states have (on average 1.3597480976121752) internal successors, (10364), 7632 states have internal predecessors, (10364), 2358 states have call successors, (2358), 487 states have call predecessors, (2358), 486 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-23 02:40:36,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10469 states to 10469 states and 15076 transitions. [2022-07-23 02:40:36,484 INFO L78 Accepts]: Start accepts. Automaton has 10469 states and 15076 transitions. Word has length 296 [2022-07-23 02:40:36,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:40:36,485 INFO L495 AbstractCegarLoop]: Abstraction has 10469 states and 15076 transitions. [2022-07-23 02:40:36,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-23 02:40:36,485 INFO L276 IsEmpty]: Start isEmpty. Operand 10469 states and 15076 transitions. [2022-07-23 02:40:36,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-07-23 02:40:36,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:40:36,493 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:40:36,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-23 02:40:36,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:40:36,715 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 02:40:36,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:40:36,716 INFO L85 PathProgramCache]: Analyzing trace with hash 2120165465, now seen corresponding path program 1 times [2022-07-23 02:40:36,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:40:36,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013679716] [2022-07-23 02:40:36,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:40:36,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:40:36,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:40:36,720 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) [2022-07-23 02:40:36,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-23 02:40:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:40:37,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:40:37,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:40:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1532 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1522 trivial. 0 not checked. [2022-07-23 02:40:38,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 02:40:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1532 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1522 trivial. 0 not checked. [2022-07-23 02:40:39,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:40:39,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013679716] [2022-07-23 02:40:39,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013679716] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 02:40:39,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 02:40:39,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-23 02:40:39,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532014966] [2022-07-23 02:40:39,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:40:39,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:40:39,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:40:39,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:40:39,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 02:40:39,299 INFO L87 Difference]: Start difference. First operand 10469 states and 15076 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-23 02:40:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:40:39,686 INFO L93 Difference]: Finished difference Result 10475 states and 15081 transitions. [2022-07-23 02:40:39,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 02:40:39,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 301 [2022-07-23 02:40:39,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:40:39,732 INFO L225 Difference]: With dead ends: 10475 [2022-07-23 02:40:39,732 INFO L226 Difference]: Without dead ends: 10473 [2022-07-23 02:40:39,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-23 02:40:39,740 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2391 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 02:40:39,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2391 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 02:40:39,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10473 states. [2022-07-23 02:40:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10473 to 10473. [2022-07-23 02:40:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10473 states, 7625 states have (on average 1.3596065573770493) internal successors, (10367), 7635 states have internal predecessors, (10367), 2358 states have call successors, (2358), 488 states have call predecessors, (2358), 487 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-23 02:40:40,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10473 states to 10473 states and 15079 transitions. [2022-07-23 02:40:40,196 INFO L78 Accepts]: Start accepts. Automaton has 10473 states and 15079 transitions. Word has length 301 [2022-07-23 02:40:40,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:40:40,197 INFO L495 AbstractCegarLoop]: Abstraction has 10473 states and 15079 transitions. [2022-07-23 02:40:40,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2022-07-23 02:40:40,197 INFO L276 IsEmpty]: Start isEmpty. Operand 10473 states and 15079 transitions. [2022-07-23 02:40:40,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-07-23 02:40:40,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:40:40,205 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:40:40,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-23 02:40:40,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:40:40,423 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 02:40:40,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:40:40,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1226100603, now seen corresponding path program 1 times [2022-07-23 02:40:40,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:40:40,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917161445] [2022-07-23 02:40:40,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:40:40,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:40:40,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:40:40,427 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) [2022-07-23 02:40:40,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-23 02:40:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:40:41,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:40:41,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:40:42,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2022-07-23 02:40:42,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 02:40:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2022-07-23 02:40:43,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:40:43,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917161445] [2022-07-23 02:40:43,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917161445] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 02:40:43,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 02:40:43,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-23 02:40:43,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111018337] [2022-07-23 02:40:43,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:40:43,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:40:43,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:40:43,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:40:43,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 02:40:43,184 INFO L87 Difference]: Start difference. First operand 10473 states and 15079 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-23 02:40:43,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:40:43,530 INFO L93 Difference]: Finished difference Result 10479 states and 15084 transitions. [2022-07-23 02:40:43,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 02:40:43,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 306 [2022-07-23 02:40:43,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:40:43,564 INFO L225 Difference]: With dead ends: 10479 [2022-07-23 02:40:43,565 INFO L226 Difference]: Without dead ends: 10477 [2022-07-23 02:40:43,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-23 02:40:43,570 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 02:40:43,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2390 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 02:40:43,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10477 states. [2022-07-23 02:40:43,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10477 to 10477. [2022-07-23 02:40:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10477 states, 7628 states have (on average 1.359465128474043) internal successors, (10370), 7638 states have internal predecessors, (10370), 2358 states have call successors, (2358), 489 states have call predecessors, (2358), 488 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-23 02:40:43,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10477 states to 10477 states and 15082 transitions. [2022-07-23 02:40:43,953 INFO L78 Accepts]: Start accepts. Automaton has 10477 states and 15082 transitions. Word has length 306 [2022-07-23 02:40:43,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:40:43,953 INFO L495 AbstractCegarLoop]: Abstraction has 10477 states and 15082 transitions. [2022-07-23 02:40:43,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-23 02:40:43,953 INFO L276 IsEmpty]: Start isEmpty. Operand 10477 states and 15082 transitions. [2022-07-23 02:40:43,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-07-23 02:40:43,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:40:43,962 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:40:43,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-23 02:40:44,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:40:44,182 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)] === [2022-07-23 02:40:44,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:40:44,182 INFO L85 PathProgramCache]: Analyzing trace with hash 452027737, now seen corresponding path program 1 times [2022-07-23 02:40:44,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:40:44,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533358152] [2022-07-23 02:40:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:40:44,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:40:44,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:40:44,185 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) [2022-07-23 02:40:44,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-23 02:40:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:40:45,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 1992 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:40:45,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:40:46,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1566 trivial. 0 not checked. [2022-07-23 02:40:46,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 02:40:46,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1566 trivial. 0 not checked. [2022-07-23 02:40:46,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:40:46,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533358152] [2022-07-23 02:40:46,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533358152] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 02:40:46,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 02:40:46,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-23 02:40:46,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295886280] [2022-07-23 02:40:46,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:40:46,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:40:46,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:40:46,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:40:46,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 02:40:46,972 INFO L87 Difference]: Start difference. First operand 10477 states and 15082 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-23 02:40:47,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:40:47,273 INFO L93 Difference]: Finished difference Result 10483 states and 15087 transitions. [2022-07-23 02:40:47,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 02:40:47,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 311 [2022-07-23 02:40:47,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:40:47,310 INFO L225 Difference]: With dead ends: 10483 [2022-07-23 02:40:47,311 INFO L226 Difference]: Without dead ends: 10481 [2022-07-23 02:40:47,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-23 02:40:47,318 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2389 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 02:40:47,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2389 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 02:40:47,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10481 states. [2022-07-23 02:40:47,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10481 to 10481. [2022-07-23 02:40:47,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10481 states, 7631 states have (on average 1.3593238107718517) internal successors, (10373), 7641 states have internal predecessors, (10373), 2358 states have call successors, (2358), 490 states have call predecessors, (2358), 489 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-23 02:40:47,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10481 states to 10481 states and 15085 transitions. [2022-07-23 02:40:47,723 INFO L78 Accepts]: Start accepts. Automaton has 10481 states and 15085 transitions. Word has length 311 [2022-07-23 02:40:47,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:40:47,723 INFO L495 AbstractCegarLoop]: Abstraction has 10481 states and 15085 transitions. [2022-07-23 02:40:47,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-23 02:40:47,723 INFO L276 IsEmpty]: Start isEmpty. Operand 10481 states and 15085 transitions. [2022-07-23 02:40:47,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-07-23 02:40:47,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:40:47,734 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:40:47,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-07-23 02:40:47,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:40:47,947 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)] === [2022-07-23 02:40:47,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:40:47,948 INFO L85 PathProgramCache]: Analyzing trace with hash -811933189, now seen corresponding path program 1 times [2022-07-23 02:40:47,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:40:47,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926359868] [2022-07-23 02:40:47,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:40:47,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:40:47,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:40:47,954 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) [2022-07-23 02:40:47,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-23 02:40:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:40:48,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:40:48,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:40:49,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2022-07-23 02:40:49,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 02:40:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2022-07-23 02:40:50,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:40:50,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926359868] [2022-07-23 02:40:50,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926359868] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 02:40:50,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 02:40:50,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-23 02:40:50,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808814934] [2022-07-23 02:40:50,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:40:50,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:40:50,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:40:50,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:40:50,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 02:40:50,392 INFO L87 Difference]: Start difference. First operand 10481 states and 15085 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-23 02:40:50,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:40:50,707 INFO L93 Difference]: Finished difference Result 10487 states and 15090 transitions. [2022-07-23 02:40:50,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 02:40:50,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 316 [2022-07-23 02:40:50,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:40:50,785 INFO L225 Difference]: With dead ends: 10487 [2022-07-23 02:40:50,786 INFO L226 Difference]: Without dead ends: 10485 [2022-07-23 02:40:50,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-23 02:40:50,806 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 02:40:50,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2388 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 02:40:50,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10485 states. [2022-07-23 02:40:51,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10485 to 10485. [2022-07-23 02:40:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10485 states, 7634 states have (on average 1.3591826041393764) internal successors, (10376), 7644 states have internal predecessors, (10376), 2358 states have call successors, (2358), 491 states have call predecessors, (2358), 490 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-23 02:40:51,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10485 states to 10485 states and 15088 transitions. [2022-07-23 02:40:51,269 INFO L78 Accepts]: Start accepts. Automaton has 10485 states and 15088 transitions. Word has length 316 [2022-07-23 02:40:51,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:40:51,269 INFO L495 AbstractCegarLoop]: Abstraction has 10485 states and 15088 transitions. [2022-07-23 02:40:51,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-07-23 02:40:51,270 INFO L276 IsEmpty]: Start isEmpty. Operand 10485 states and 15088 transitions. [2022-07-23 02:40:51,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-07-23 02:40:51,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:40:51,279 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 10, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:40:51,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-23 02:40:51,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:40:51,503 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)] === [2022-07-23 02:40:51,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:40:51,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1242370649, now seen corresponding path program 1 times [2022-07-23 02:40:51,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:40:51,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737997880] [2022-07-23 02:40:51,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:40:51,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:40:51,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:40:51,516 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) [2022-07-23 02:40:51,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-23 02:40:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:40:52,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 2006 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:40:52,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:40:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1644 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1626 trivial. 0 not checked. [2022-07-23 02:40:53,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 02:40:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1644 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1626 trivial. 0 not checked. [2022-07-23 02:40:54,023 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:40:54,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737997880] [2022-07-23 02:40:54,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737997880] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 02:40:54,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 02:40:54,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-23 02:40:54,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000914577] [2022-07-23 02:40:54,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:40:54,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:40:54,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:40:54,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:40:54,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 02:40:54,025 INFO L87 Difference]: Start difference. First operand 10485 states and 15088 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-23 02:40:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:40:54,386 INFO L93 Difference]: Finished difference Result 10540 states and 15128 transitions. [2022-07-23 02:40:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 02:40:54,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 321 [2022-07-23 02:40:54,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:40:54,419 INFO L225 Difference]: With dead ends: 10540 [2022-07-23 02:40:54,420 INFO L226 Difference]: Without dead ends: 10538 [2022-07-23 02:40:54,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-23 02:40:54,428 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2311 mSDsluCounter, 4992 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 7459 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 02:40:54,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2313 Valid, 7459 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 02:40:54,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10538 states. [2022-07-23 02:40:54,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10538 to 10538. [2022-07-23 02:40:54,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10538 states, 7672 states have (on average 1.3574035453597497) internal successors, (10414), 7682 states have internal predecessors, (10414), 2358 states have call successors, (2358), 506 states have call predecessors, (2358), 505 states have return successors, (2354), 2349 states have call predecessors, (2354), 2354 states have call successors, (2354) [2022-07-23 02:40:54,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10538 states to 10538 states and 15126 transitions. [2022-07-23 02:40:54,942 INFO L78 Accepts]: Start accepts. Automaton has 10538 states and 15126 transitions. Word has length 321 [2022-07-23 02:40:54,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:40:54,943 INFO L495 AbstractCegarLoop]: Abstraction has 10538 states and 15126 transitions. [2022-07-23 02:40:54,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2022-07-23 02:40:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 10538 states and 15126 transitions. [2022-07-23 02:40:54,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-07-23 02:40:54,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:40:54,964 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 17, 17, 17, 17, 17, 17, 11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:40:55,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-23 02:40:55,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:40:55,180 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)] === [2022-07-23 02:40:55,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:40:55,180 INFO L85 PathProgramCache]: Analyzing trace with hash 234180815, now seen corresponding path program 1 times [2022-07-23 02:40:55,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:40:55,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789809344] [2022-07-23 02:40:55,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:40:55,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:40:55,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:40:55,183 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) [2022-07-23 02:40:55,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-23 02:40:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:40:56,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 2094 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-23 02:40:56,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:40:56,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1859 backedges. 311 proven. 3 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2022-07-23 02:40:56,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 02:40:57,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1859 backedges. 53 proven. 18 refuted. 0 times theorem prover too weak. 1788 trivial. 0 not checked. [2022-07-23 02:40:57,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:40:57,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789809344] [2022-07-23 02:40:57,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789809344] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 02:40:57,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 02:40:57,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 22 [2022-07-23 02:40:57,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899550113] [2022-07-23 02:40:57,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 02:40:57,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-23 02:40:57,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:40:57,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-23 02:40:57,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-07-23 02:40:57,532 INFO L87 Difference]: Start difference. First operand 10538 states and 15126 transitions. Second operand has 22 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 6 states have call successors, (63), 3 states have call predecessors, (63), 8 states have return successors, (62), 7 states have call predecessors, (62), 6 states have call successors, (62) [2022-07-23 02:41:13,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:41:13,106 INFO L93 Difference]: Finished difference Result 25740 states and 36905 transitions. [2022-07-23 02:41:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-23 02:41:13,107 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 6 states have call successors, (63), 3 states have call predecessors, (63), 8 states have return successors, (62), 7 states have call predecessors, (62), 6 states have call successors, (62) Word has length 362 [2022-07-23 02:41:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:41:13,171 INFO L225 Difference]: With dead ends: 25740 [2022-07-23 02:41:13,171 INFO L226 Difference]: Without dead ends: 16592 [2022-07-23 02:41:13,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 703 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2022-07-23 02:41:13,209 INFO L413 NwaCegarLoop]: 4714 mSDtfsCounter, 7758 mSDsluCounter, 61228 mSDsCounter, 0 mSdLazyCounter, 5508 mSolverCounterSat, 1209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7943 SdHoareTripleChecker+Valid, 65942 SdHoareTripleChecker+Invalid, 6717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1209 IncrementalHoareTripleChecker+Valid, 5508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-07-23 02:41:13,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7943 Valid, 65942 Invalid, 6717 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1209 Valid, 5508 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2022-07-23 02:41:13,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16592 states. [2022-07-23 02:41:13,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16592 to 13539. [2022-07-23 02:41:13,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13539 states, 9863 states have (on average 1.3575991077765386) internal successors, (13390), 9873 states have internal predecessors, (13390), 3022 states have call successors, (3022), 652 states have call predecessors, (3022), 651 states have return successors, (3018), 3013 states have call predecessors, (3018), 3018 states have call successors, (3018) [2022-07-23 02:41:13,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13539 states to 13539 states and 19430 transitions. [2022-07-23 02:41:13,871 INFO L78 Accepts]: Start accepts. Automaton has 13539 states and 19430 transitions. Word has length 362 [2022-07-23 02:41:13,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:41:13,871 INFO L495 AbstractCegarLoop]: Abstraction has 13539 states and 19430 transitions. [2022-07-23 02:41:13,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.0) internal successors, (126), 20 states have internal predecessors, (126), 6 states have call successors, (63), 3 states have call predecessors, (63), 8 states have return successors, (62), 7 states have call predecessors, (62), 6 states have call successors, (62) [2022-07-23 02:41:13,872 INFO L276 IsEmpty]: Start isEmpty. Operand 13539 states and 19430 transitions. [2022-07-23 02:41:13,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-07-23 02:41:13,880 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:41:13,881 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 11, 10, 10, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:41:13,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-23 02:41:14,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:41:14,089 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)] === [2022-07-23 02:41:14,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:41:14,090 INFO L85 PathProgramCache]: Analyzing trace with hash 268272763, now seen corresponding path program 1 times [2022-07-23 02:41:14,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:41:14,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898717037] [2022-07-23 02:41:14,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:41:14,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:41:14,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:41:14,108 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) [2022-07-23 02:41:14,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-23 02:41:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:41:15,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 2013 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:41:15,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:41:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1662 trivial. 0 not checked. [2022-07-23 02:41:15,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 02:41:16,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1662 trivial. 0 not checked. [2022-07-23 02:41:16,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:41:16,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898717037] [2022-07-23 02:41:16,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898717037] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 02:41:16,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 02:41:16,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-23 02:41:16,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88559904] [2022-07-23 02:41:16,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:41:16,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:41:16,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:41:16,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:41:16,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 02:41:16,294 INFO L87 Difference]: Start difference. First operand 13539 states and 19430 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-07-23 02:41:16,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:41:16,753 INFO L93 Difference]: Finished difference Result 13545 states and 19435 transitions. [2022-07-23 02:41:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 02:41:16,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 326 [2022-07-23 02:41:16,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:41:16,809 INFO L225 Difference]: With dead ends: 13545 [2022-07-23 02:41:16,809 INFO L226 Difference]: Without dead ends: 13541 [2022-07-23 02:41:16,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-23 02:41:16,821 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 02:41:16,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2386 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 02:41:16,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13541 states. [2022-07-23 02:41:17,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13541 to 13541. [2022-07-23 02:41:17,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13541 states, 9865 states have (on average 1.3574252407501266) internal successors, (13391), 9874 states have internal predecessors, (13391), 3022 states have call successors, (3022), 653 states have call predecessors, (3022), 651 states have return successors, (3018), 3013 states have call predecessors, (3018), 3018 states have call successors, (3018) [2022-07-23 02:41:17,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13541 states to 13541 states and 19431 transitions. [2022-07-23 02:41:17,414 INFO L78 Accepts]: Start accepts. Automaton has 13541 states and 19431 transitions. Word has length 326 [2022-07-23 02:41:17,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:41:17,414 INFO L495 AbstractCegarLoop]: Abstraction has 13541 states and 19431 transitions. [2022-07-23 02:41:17,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2022-07-23 02:41:17,415 INFO L276 IsEmpty]: Start isEmpty. Operand 13541 states and 19431 transitions. [2022-07-23 02:41:17,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-07-23 02:41:17,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:41:17,424 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 17, 17, 17, 17, 17, 17, 12, 11, 11, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:41:17,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-23 02:41:17,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:41:17,652 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)] === [2022-07-23 02:41:17,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:41:17,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1118187353, now seen corresponding path program 1 times [2022-07-23 02:41:17,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:41:17,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546500211] [2022-07-23 02:41:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:41:17,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:41:17,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:41:17,655 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) [2022-07-23 02:41:17,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-23 02:41:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:41:18,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:41:18,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:41:19,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1724 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1702 trivial. 0 not checked. [2022-07-23 02:41:19,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 02:41:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1724 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1702 trivial. 0 not checked. [2022-07-23 02:41:20,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:41:20,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546500211] [2022-07-23 02:41:20,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546500211] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-23 02:41:20,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-23 02:41:20,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-23 02:41:20,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486468328] [2022-07-23 02:41:20,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:41:20,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:41:20,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:41:20,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:41:20,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 02:41:20,231 INFO L87 Difference]: Start difference. First operand 13541 states and 19431 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-23 02:41:20,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:41:20,790 INFO L93 Difference]: Finished difference Result 13541 states and 19431 transitions. [2022-07-23 02:41:20,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 02:41:20,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 331 [2022-07-23 02:41:20,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:41:20,825 INFO L225 Difference]: With dead ends: 13541 [2022-07-23 02:41:20,825 INFO L226 Difference]: Without dead ends: 13428 [2022-07-23 02:41:20,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-23 02:41:20,832 INFO L413 NwaCegarLoop]: 2465 mSDtfsCounter, 2381 mSDsluCounter, 4914 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2381 SdHoareTripleChecker+Valid, 7379 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 02:41:20,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2381 Valid, 7379 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 02:41:20,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13428 states. [2022-07-23 02:41:21,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13428 to 10471. [2022-07-23 02:41:21,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10471 states, 7634 states have (on average 1.3582656536547026) internal successors, (10369), 7637 states have internal predecessors, (10369), 2337 states have call successors, (2337), 498 states have call predecessors, (2337), 498 states have return successors, (2337), 2335 states have call predecessors, (2337), 2337 states have call successors, (2337) [2022-07-23 02:41:21,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10471 states to 10471 states and 15043 transitions. [2022-07-23 02:41:21,304 INFO L78 Accepts]: Start accepts. Automaton has 10471 states and 15043 transitions. Word has length 331 [2022-07-23 02:41:21,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:41:21,304 INFO L495 AbstractCegarLoop]: Abstraction has 10471 states and 15043 transitions. [2022-07-23 02:41:21,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-07-23 02:41:21,304 INFO L276 IsEmpty]: Start isEmpty. Operand 10471 states and 15043 transitions. [2022-07-23 02:41:21,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-07-23 02:41:21,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:41:21,316 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 17, 17, 17, 17, 17, 17, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:41:21,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-23 02:41:21,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:41:21,521 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 02:41:21,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:41:21,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1541849949, now seen corresponding path program 1 times [2022-07-23 02:41:21,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:41:21,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420866772] [2022-07-23 02:41:21,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:41:21,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:41:21,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:41:21,525 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) [2022-07-23 02:41:21,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-23 02:41:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:41:22,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 02:41:22,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:41:22,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-07-23 02:41:22,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 02:41:22,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:41:22,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420866772] [2022-07-23 02:41:22,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420866772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 02:41:22,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 02:41:22,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 02:41:22,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967119298] [2022-07-23 02:41:22,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:41:22,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 02:41:22,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:41:22,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 02:41:22,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 02:41:22,645 INFO L87 Difference]: Start difference. First operand 10471 states and 15043 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-23 02:41:23,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:41:23,268 INFO L93 Difference]: Finished difference Result 22501 states and 32321 transitions. [2022-07-23 02:41:23,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 02:41:23,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 342 [2022-07-23 02:41:23,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:41:23,311 INFO L225 Difference]: With dead ends: 22501 [2022-07-23 02:41:23,312 INFO L226 Difference]: Without dead ends: 13432 [2022-07-23 02:41:23,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 02:41:23,339 INFO L413 NwaCegarLoop]: 4640 mSDtfsCounter, 2272 mSDsluCounter, 2387 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2272 SdHoareTripleChecker+Valid, 7027 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 02:41:23,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2272 Valid, 7027 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 02:41:23,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13432 states. [2022-07-23 02:41:23,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13432 to 10471. [2022-07-23 02:41:23,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10471 states, 7634 states have (on average 1.3582656536547026) internal successors, (10369), 7637 states have internal predecessors, (10369), 2337 states have call successors, (2337), 498 states have call predecessors, (2337), 498 states have return successors, (2337), 2335 states have call predecessors, (2337), 2337 states have call successors, (2337) [2022-07-23 02:41:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10471 states to 10471 states and 15043 transitions. [2022-07-23 02:41:23,817 INFO L78 Accepts]: Start accepts. Automaton has 10471 states and 15043 transitions. Word has length 342 [2022-07-23 02:41:23,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:41:23,818 INFO L495 AbstractCegarLoop]: Abstraction has 10471 states and 15043 transitions. [2022-07-23 02:41:23,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-23 02:41:23,818 INFO L276 IsEmpty]: Start isEmpty. Operand 10471 states and 15043 transitions. [2022-07-23 02:41:23,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-07-23 02:41:23,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:41:23,830 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 17, 17, 17, 17, 17, 17, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:41:23,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-07-23 02:41:24,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:41:24,052 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)] === [2022-07-23 02:41:24,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:41:24,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2102549727, now seen corresponding path program 1 times [2022-07-23 02:41:24,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:41:24,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701375517] [2022-07-23 02:41:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:41:24,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:41:24,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:41:24,056 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) [2022-07-23 02:41:24,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-23 02:41:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:41:25,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 02:41:25,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:41:25,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-07-23 02:41:25,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 02:41:25,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:41:25,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701375517] [2022-07-23 02:41:25,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701375517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 02:41:25,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 02:41:25,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 02:41:25,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488908488] [2022-07-23 02:41:25,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:41:25,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 02:41:25,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:41:25,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 02:41:25,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 02:41:25,198 INFO L87 Difference]: Start difference. First operand 10471 states and 15043 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-23 02:41:25,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:41:25,951 INFO L93 Difference]: Finished difference Result 22509 states and 32337 transitions. [2022-07-23 02:41:25,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 02:41:25,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 342 [2022-07-23 02:41:25,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:41:25,984 INFO L225 Difference]: With dead ends: 22509 [2022-07-23 02:41:25,984 INFO L226 Difference]: Without dead ends: 13446 [2022-07-23 02:41:26,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 02:41:26,001 INFO L413 NwaCegarLoop]: 4691 mSDtfsCounter, 2278 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 7074 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 02:41:26,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 7074 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 02:41:26,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13446 states. [2022-07-23 02:41:26,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13446 to 13442. [2022-07-23 02:41:26,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13442 states, 9807 states have (on average 1.3589272968287958) internal successors, (13327), 9810 states have internal predecessors, (13327), 2995 states have call successors, (2995), 638 states have call predecessors, (2995), 638 states have return successors, (2995), 2993 states have call predecessors, (2995), 2995 states have call successors, (2995) [2022-07-23 02:41:26,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13442 states to 13442 states and 19317 transitions. [2022-07-23 02:41:26,483 INFO L78 Accepts]: Start accepts. Automaton has 13442 states and 19317 transitions. Word has length 342 [2022-07-23 02:41:26,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:41:26,484 INFO L495 AbstractCegarLoop]: Abstraction has 13442 states and 19317 transitions. [2022-07-23 02:41:26,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-23 02:41:26,484 INFO L276 IsEmpty]: Start isEmpty. Operand 13442 states and 19317 transitions. [2022-07-23 02:41:26,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-07-23 02:41:26,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:41:26,494 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 17, 17, 17, 17, 17, 17, 7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:41:26,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-07-23 02:41:26,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:41:26,706 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 02:41:26,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:41:26,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1034647165, now seen corresponding path program 1 times [2022-07-23 02:41:26,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:41:26,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995599633] [2022-07-23 02:41:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:41:26,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:41:26,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:41:26,709 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) [2022-07-23 02:41:26,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-23 02:41:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:41:27,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 2107 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 02:41:27,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:41:27,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1876 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 1789 trivial. 0 not checked. [2022-07-23 02:41:27,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 02:41:27,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:41:27,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995599633] [2022-07-23 02:41:27,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995599633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 02:41:27,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 02:41:27,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 02:41:27,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975874203] [2022-07-23 02:41:27,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:41:27,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 02:41:27,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:41:27,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 02:41:27,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 02:41:27,930 INFO L87 Difference]: Start difference. First operand 13442 states and 19317 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-23 02:41:29,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:41:29,088 INFO L93 Difference]: Finished difference Result 31264 states and 44935 transitions. [2022-07-23 02:41:29,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 02:41:29,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 364 [2022-07-23 02:41:29,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:41:29,150 INFO L225 Difference]: With dead ends: 31264 [2022-07-23 02:41:29,150 INFO L226 Difference]: Without dead ends: 19230 [2022-07-23 02:41:29,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 02:41:29,184 INFO L413 NwaCegarLoop]: 4454 mSDtfsCounter, 2107 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2107 SdHoareTripleChecker+Valid, 6782 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 02:41:29,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2107 Valid, 6782 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 02:41:29,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19230 states. [2022-07-23 02:41:29,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19230 to 19224. [2022-07-23 02:41:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19224 states, 14030 states have (on average 1.3610121168923734) internal successors, (19095), 14035 states have internal predecessors, (19095), 4268 states have call successors, (4268), 924 states have call predecessors, (4268), 924 states have return successors, (4268), 4264 states have call predecessors, (4268), 4268 states have call successors, (4268) [2022-07-23 02:41:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19224 states to 19224 states and 27631 transitions. [2022-07-23 02:41:29,950 INFO L78 Accepts]: Start accepts. Automaton has 19224 states and 27631 transitions. Word has length 364 [2022-07-23 02:41:29,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:41:29,951 INFO L495 AbstractCegarLoop]: Abstraction has 19224 states and 27631 transitions. [2022-07-23 02:41:29,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-23 02:41:29,951 INFO L276 IsEmpty]: Start isEmpty. Operand 19224 states and 27631 transitions. [2022-07-23 02:41:29,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-07-23 02:41:29,969 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:41:29,969 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:41:30,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-07-23 02:41:30,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:41:30,184 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)] === [2022-07-23 02:41:30,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:41:30,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1515053959, now seen corresponding path program 1 times [2022-07-23 02:41:30,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:41:30,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853418922] [2022-07-23 02:41:30,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:41:30,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:41:30,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:41:30,187 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) [2022-07-23 02:41:30,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-23 02:41:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:41:31,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:41:31,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:41:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-23 02:41:31,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 02:41:31,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:41:31,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853418922] [2022-07-23 02:41:31,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853418922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 02:41:31,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 02:41:31,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 02:41:31,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705283907] [2022-07-23 02:41:31,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:41:31,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:41:31,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:41:31,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:41:31,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 02:41:31,448 INFO L87 Difference]: Start difference. First operand 19224 states and 27631 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-23 02:41:32,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:41:32,769 INFO L93 Difference]: Finished difference Result 42636 states and 61271 transitions. [2022-07-23 02:41:32,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 02:41:32,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 389 [2022-07-23 02:41:32,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:41:32,873 INFO L225 Difference]: With dead ends: 42636 [2022-07-23 02:41:32,874 INFO L226 Difference]: Without dead ends: 24820 [2022-07-23 02:41:32,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 02:41:32,931 INFO L413 NwaCegarLoop]: 4453 mSDtfsCounter, 2033 mSDsluCounter, 11211 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 15664 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 02:41:32,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 15664 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 02:41:32,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24820 states. [2022-07-23 02:41:33,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24820 to 24806. [2022-07-23 02:41:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24806 states, 18057 states have (on average 1.3611895663731517) internal successors, (24579), 18064 states have internal predecessors, (24579), 5537 states have call successors, (5537), 1206 states have call predecessors, (5537), 1210 states have return successors, (5541), 5535 states have call predecessors, (5541), 5537 states have call successors, (5541) [2022-07-23 02:41:34,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24806 states to 24806 states and 35657 transitions. [2022-07-23 02:41:34,096 INFO L78 Accepts]: Start accepts. Automaton has 24806 states and 35657 transitions. Word has length 389 [2022-07-23 02:41:34,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:41:34,097 INFO L495 AbstractCegarLoop]: Abstraction has 24806 states and 35657 transitions. [2022-07-23 02:41:34,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-23 02:41:34,098 INFO L276 IsEmpty]: Start isEmpty. Operand 24806 states and 35657 transitions. [2022-07-23 02:41:34,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-07-23 02:41:34,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:41:34,117 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:41:34,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-23 02:41:34,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:41:34,332 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)] === [2022-07-23 02:41:34,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:41:34,332 INFO L85 PathProgramCache]: Analyzing trace with hash 291617498, now seen corresponding path program 1 times [2022-07-23 02:41:34,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:41:34,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4958907] [2022-07-23 02:41:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:41:34,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:41:34,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:41:34,335 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) [2022-07-23 02:41:34,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-23 02:41:35,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:41:35,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 2144 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:41:35,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:41:35,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-23 02:41:35,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 02:41:35,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:41:35,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4958907] [2022-07-23 02:41:35,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4958907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 02:41:35,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 02:41:35,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 02:41:35,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516221186] [2022-07-23 02:41:35,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:41:35,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:41:35,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:41:35,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:41:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 02:41:35,543 INFO L87 Difference]: Start difference. First operand 24806 states and 35657 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-23 02:41:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:41:37,874 INFO L93 Difference]: Finished difference Result 53808 states and 77339 transitions. [2022-07-23 02:41:37,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 02:41:37,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 390 [2022-07-23 02:41:37,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:41:38,001 INFO L225 Difference]: With dead ends: 53808 [2022-07-23 02:41:38,002 INFO L226 Difference]: Without dead ends: 30410 [2022-07-23 02:41:38,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 02:41:38,052 INFO L413 NwaCegarLoop]: 4457 mSDtfsCounter, 2035 mSDsluCounter, 11217 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 15674 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 02:41:38,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 15674 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-23 02:41:38,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30410 states. [2022-07-23 02:41:39,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30410 to 30396. [2022-07-23 02:41:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30396 states, 22092 states have (on average 1.3611714647836322) internal successors, (30071), 22101 states have internal predecessors, (30071), 6806 states have call successors, (6806), 1488 states have call predecessors, (6806), 1496 states have return successors, (6814), 6806 states have call predecessors, (6814), 6806 states have call successors, (6814) [2022-07-23 02:41:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30396 states to 30396 states and 43691 transitions. [2022-07-23 02:41:39,701 INFO L78 Accepts]: Start accepts. Automaton has 30396 states and 43691 transitions. Word has length 390 [2022-07-23 02:41:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:41:39,701 INFO L495 AbstractCegarLoop]: Abstraction has 30396 states and 43691 transitions. [2022-07-23 02:41:39,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-23 02:41:39,702 INFO L276 IsEmpty]: Start isEmpty. Operand 30396 states and 43691 transitions. [2022-07-23 02:41:39,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-07-23 02:41:39,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:41:39,749 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:41:39,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-23 02:41:39,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:41:39,954 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 02:41:39,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:41:39,955 INFO L85 PathProgramCache]: Analyzing trace with hash -419574428, now seen corresponding path program 1 times [2022-07-23 02:41:39,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:41:39,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450352337] [2022-07-23 02:41:39,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:41:39,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:41:39,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:41:39,958 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 02:41:39,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-23 02:41:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:41:41,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 2145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:41:41,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:41:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-23 02:41:41,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 02:41:41,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:41:41,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450352337] [2022-07-23 02:41:41,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450352337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 02:41:41,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 02:41:41,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 02:41:41,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993548281] [2022-07-23 02:41:41,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:41:41,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:41:41,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:41:41,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:41:41,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 02:41:41,125 INFO L87 Difference]: Start difference. First operand 30396 states and 43691 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-23 02:41:42,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:41:42,894 INFO L93 Difference]: Finished difference Result 65000 states and 93431 transitions. [2022-07-23 02:41:42,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 02:41:42,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 391 [2022-07-23 02:41:42,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:41:42,995 INFO L225 Difference]: With dead ends: 65000 [2022-07-23 02:41:42,995 INFO L226 Difference]: Without dead ends: 36012 [2022-07-23 02:41:43,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 02:41:43,054 INFO L413 NwaCegarLoop]: 4456 mSDtfsCounter, 2046 mSDsluCounter, 11204 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 15660 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 02:41:43,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2046 Valid, 15660 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 02:41:43,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36012 states. [2022-07-23 02:41:44,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36012 to 35998. [2022-07-23 02:41:44,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35998 states, 26139 states have (on average 1.360993151995103) internal successors, (35575), 26150 states have internal predecessors, (35575), 8075 states have call successors, (8075), 1770 states have call predecessors, (8075), 1782 states have return successors, (8087), 8077 states have call predecessors, (8087), 8075 states have call successors, (8087) [2022-07-23 02:41:44,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35998 states to 35998 states and 51737 transitions. [2022-07-23 02:41:44,823 INFO L78 Accepts]: Start accepts. Automaton has 35998 states and 51737 transitions. Word has length 391 [2022-07-23 02:41:44,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:41:44,824 INFO L495 AbstractCegarLoop]: Abstraction has 35998 states and 51737 transitions. [2022-07-23 02:41:44,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-23 02:41:44,824 INFO L276 IsEmpty]: Start isEmpty. Operand 35998 states and 51737 transitions. [2022-07-23 02:41:44,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-07-23 02:41:44,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:41:44,846 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:41:44,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-23 02:41:45,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:41:45,050 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 02:41:45,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:41:45,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1863912343, now seen corresponding path program 1 times [2022-07-23 02:41:45,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:41:45,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860689527] [2022-07-23 02:41:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:41:45,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:41:45,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:41:45,061 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 02:41:45,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-23 02:41:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:41:46,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:41:46,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:41:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-23 02:41:46,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 02:41:46,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:41:46,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860689527] [2022-07-23 02:41:46,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860689527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 02:41:46,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 02:41:46,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 02:41:46,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452212886] [2022-07-23 02:41:46,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:41:46,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:41:46,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:41:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:41:46,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 02:41:46,433 INFO L87 Difference]: Start difference. First operand 35998 states and 51737 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-23 02:41:48,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:41:48,454 INFO L93 Difference]: Finished difference Result 76208 states and 109531 transitions. [2022-07-23 02:41:48,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 02:41:48,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 392 [2022-07-23 02:41:48,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:41:48,719 INFO L225 Difference]: With dead ends: 76208 [2022-07-23 02:41:48,719 INFO L226 Difference]: Without dead ends: 41618 [2022-07-23 02:41:48,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 02:41:48,782 INFO L413 NwaCegarLoop]: 4456 mSDtfsCounter, 2037 mSDsluCounter, 11213 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 15669 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 02:41:48,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 15669 Invalid, 139 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 02:41:48,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41618 states. [2022-07-23 02:41:50,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41618 to 41604. [2022-07-23 02:41:50,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41604 states, 30190 states have (on average 1.3608148393507784) internal successors, (41083), 30203 states have internal predecessors, (41083), 9344 states have call successors, (9344), 2052 states have call predecessors, (9344), 2068 states have return successors, (9360), 9348 states have call predecessors, (9360), 9344 states have call successors, (9360) [2022-07-23 02:41:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41604 states to 41604 states and 59787 transitions. [2022-07-23 02:41:50,776 INFO L78 Accepts]: Start accepts. Automaton has 41604 states and 59787 transitions. Word has length 392 [2022-07-23 02:41:50,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:41:50,777 INFO L495 AbstractCegarLoop]: Abstraction has 41604 states and 59787 transitions. [2022-07-23 02:41:50,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-23 02:41:50,777 INFO L276 IsEmpty]: Start isEmpty. Operand 41604 states and 59787 transitions. [2022-07-23 02:41:50,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-07-23 02:41:50,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:41:50,798 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:41:50,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-23 02:41:51,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:41:51,012 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 02:41:51,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:41:51,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1801809087, now seen corresponding path program 1 times [2022-07-23 02:41:51,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:41:51,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491925094] [2022-07-23 02:41:51,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:41:51,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:41:51,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:41:51,016 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 02:41:51,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-23 02:41:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:41:52,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 2147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:41:52,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:41:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-23 02:41:52,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 02:41:52,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:41:52,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491925094] [2022-07-23 02:41:52,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491925094] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 02:41:52,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 02:41:52,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 02:41:52,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822890168] [2022-07-23 02:41:52,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:41:52,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:41:52,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:41:52,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:41:52,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 02:41:52,219 INFO L87 Difference]: Start difference. First operand 41604 states and 59787 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-23 02:41:55,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:41:55,249 INFO L93 Difference]: Finished difference Result 87424 states and 125639 transitions. [2022-07-23 02:41:55,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 02:41:55,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 393 [2022-07-23 02:41:55,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:41:55,501 INFO L225 Difference]: With dead ends: 87424 [2022-07-23 02:41:55,501 INFO L226 Difference]: Without dead ends: 47228 [2022-07-23 02:41:55,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 02:41:55,607 INFO L413 NwaCegarLoop]: 4456 mSDtfsCounter, 2035 mSDsluCounter, 11215 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 15671 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 02:41:55,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 15671 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 02:41:55,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47228 states. [2022-07-23 02:41:57,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47228 to 47214. [2022-07-23 02:41:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47214 states, 34245 states have (on average 1.360636589283107) internal successors, (46595), 34260 states have internal predecessors, (46595), 10613 states have call successors, (10613), 2334 states have call predecessors, (10613), 2354 states have return successors, (10633), 10619 states have call predecessors, (10633), 10613 states have call successors, (10633) [2022-07-23 02:41:57,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47214 states to 47214 states and 67841 transitions. [2022-07-23 02:41:57,818 INFO L78 Accepts]: Start accepts. Automaton has 47214 states and 67841 transitions. Word has length 393 [2022-07-23 02:41:57,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:41:57,819 INFO L495 AbstractCegarLoop]: Abstraction has 47214 states and 67841 transitions. [2022-07-23 02:41:57,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 4 states have internal predecessors, (122), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-23 02:41:57,819 INFO L276 IsEmpty]: Start isEmpty. Operand 47214 states and 67841 transitions. [2022-07-23 02:41:57,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-07-23 02:41:57,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:41:57,843 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:41:57,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-23 02:41:58,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:41:58,048 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 02:41:58,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:41:58,049 INFO L85 PathProgramCache]: Analyzing trace with hash -914423724, now seen corresponding path program 1 times [2022-07-23 02:41:58,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:41:58,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169479172] [2022-07-23 02:41:58,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:41:58,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:41:58,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:41:58,052 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 02:41:58,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-23 02:41:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:41:59,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 2148 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:41:59,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:41:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-23 02:41:59,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 02:41:59,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:41:59,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169479172] [2022-07-23 02:41:59,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169479172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 02:41:59,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 02:41:59,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 02:41:59,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790427732] [2022-07-23 02:41:59,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:41:59,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:41:59,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:41:59,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:41:59,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 02:41:59,217 INFO L87 Difference]: Start difference. First operand 47214 states and 67841 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-23 02:42:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:42:02,371 INFO L93 Difference]: Finished difference Result 98648 states and 141755 transitions. [2022-07-23 02:42:02,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 02:42:02,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 394 [2022-07-23 02:42:02,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:42:02,602 INFO L225 Difference]: With dead ends: 98648 [2022-07-23 02:42:02,602 INFO L226 Difference]: Without dead ends: 52842 [2022-07-23 02:42:02,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 02:42:02,714 INFO L413 NwaCegarLoop]: 4456 mSDtfsCounter, 2035 mSDsluCounter, 11215 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 15671 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 02:42:02,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 15671 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 02:42:02,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52842 states. [2022-07-23 02:42:05,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52842 to 52828. [2022-07-23 02:42:05,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52828 states, 38304 states have (on average 1.3604584377610693) internal successors, (52111), 38321 states have internal predecessors, (52111), 11882 states have call successors, (11882), 2616 states have call predecessors, (11882), 2640 states have return successors, (11906), 11890 states have call predecessors, (11906), 11882 states have call successors, (11906) [2022-07-23 02:42:05,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52828 states to 52828 states and 75899 transitions. [2022-07-23 02:42:05,593 INFO L78 Accepts]: Start accepts. Automaton has 52828 states and 75899 transitions. Word has length 394 [2022-07-23 02:42:05,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 02:42:05,600 INFO L495 AbstractCegarLoop]: Abstraction has 52828 states and 75899 transitions. [2022-07-23 02:42:05,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-23 02:42:05,601 INFO L276 IsEmpty]: Start isEmpty. Operand 52828 states and 75899 transitions. [2022-07-23 02:42:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-07-23 02:42:05,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 02:42:05,625 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 02:42:05,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-07-23 02:42:05,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 02:42:05,840 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-23 02:42:05,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 02:42:05,841 INFO L85 PathProgramCache]: Analyzing trace with hash -614648546, now seen corresponding path program 1 times [2022-07-23 02:42:05,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 02:42:05,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602137980] [2022-07-23 02:42:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 02:42:05,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 02:42:05,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 02:42:05,844 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 02:42:05,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-23 02:42:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 02:42:06,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 2149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 02:42:06,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 02:42:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-23 02:42:07,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 02:42:07,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 02:42:07,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602137980] [2022-07-23 02:42:07,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602137980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 02:42:07,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 02:42:07,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 02:42:07,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323426008] [2022-07-23 02:42:07,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 02:42:07,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 02:42:07,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 02:42:07,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 02:42:07,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 02:42:07,080 INFO L87 Difference]: Start difference. First operand 52828 states and 75899 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-23 02:42:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 02:42:09,782 INFO L93 Difference]: Finished difference Result 109880 states and 157879 transitions. [2022-07-23 02:42:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 02:42:09,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 395 [2022-07-23 02:42:09,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 02:42:09,985 INFO L225 Difference]: With dead ends: 109880 [2022-07-23 02:42:09,985 INFO L226 Difference]: Without dead ends: 58460 [2022-07-23 02:42:10,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 02:42:10,253 INFO L413 NwaCegarLoop]: 4456 mSDtfsCounter, 2035 mSDsluCounter, 11215 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 15671 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 02:42:10,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 15671 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 02:42:10,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58460 states.