./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 eb692b52 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-?-eb692b5 [2022-07-20 02:23:55,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 02:23:55,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 02:23:55,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 02:23:55,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 02:23:55,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 02:23:55,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 02:23:55,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 02:23:55,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 02:23:55,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 02:23:55,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 02:23:55,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 02:23:55,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 02:23:55,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 02:23:55,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 02:23:55,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 02:23:55,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 02:23:55,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 02:23:55,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 02:23:55,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 02:23:55,180 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 02:23:55,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 02:23:55,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 02:23:55,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 02:23:55,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 02:23:55,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 02:23:55,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 02:23:55,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 02:23:55,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 02:23:55,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 02:23:55,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 02:23:55,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 02:23:55,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 02:23:55,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 02:23:55,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 02:23:55,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 02:23:55,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 02:23:55,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 02:23:55,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 02:23:55,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 02:23:55,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 02:23:55,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 02:23:55,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-20 02:23:55,221 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 02:23:55,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 02:23:55,224 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 02:23:55,224 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 02:23:55,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 02:23:55,225 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 02:23:55,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 02:23:55,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 02:23:55,226 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 02:23:55,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 02:23:55,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 02:23:55,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 02:23:55,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 02:23:55,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 02:23:55,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 02:23:55,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 02:23:55,228 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 02:23:55,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 02:23:55,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 02:23:55,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 02:23:55,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 02:23:55,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 02:23:55,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 02:23:55,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 02:23:55,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 02:23:55,230 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 02:23:55,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 02:23:55,230 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 02:23:55,231 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 02:23:55,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 02:23:55,231 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24362a0e750636c52038fc4d3468ffab15d6b74376c584ca05819f34fdf58260 [2022-07-20 02:23:55,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 02:23:55,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 02:23:55,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 02:23:55,454 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 02:23:55,467 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 02:23:55,469 INFO L432 ainManager$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 [2022-07-20 02:23:55,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7481bc446/f866413d7e14481ba789a742f07bb076/FLAG6d7d5b1b5 [2022-07-20 02:23:56,220 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 02:23:56,220 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 [2022-07-20 02:23:56,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7481bc446/f866413d7e14481ba789a742f07bb076/FLAG6d7d5b1b5 [2022-07-20 02:23:56,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7481bc446/f866413d7e14481ba789a742f07bb076 [2022-07-20 02:23:56,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 02:23:56,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 02:23:56,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 02:23:56,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 02:23:56,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 02:23:56,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:23:56" (1/1) ... [2022-07-20 02:23:56,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66115a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:23:56, skipping insertion in model container [2022-07-20 02:23:56,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:23:56" (1/1) ... [2022-07-20 02:23:56,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 02:23:56,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 02:23:58,367 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] [2022-07-20 02:23:58,370 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[359684,359697] [2022-07-20 02:23:58,371 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[359851,359864] [2022-07-20 02:23:58,371 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i[360019,360032] [2022-07-20 02:23:58,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 02:23:58,419 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 02:23:58,615 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) [2022-07-20 02:23:58,624 INFO L158 Benchmark]: Toolchain (without parser) took 2121.10ms. Allocated memory was 121.6MB in the beginning and 178.3MB in the end (delta: 56.6MB). Free memory was 88.5MB in the beginning and 98.1MB in the end (delta: -9.6MB). Peak memory consumption was 77.9MB. Max. memory is 16.1GB. [2022-07-20 02:23:58,624 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 02:23:58,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2119.61ms. Allocated memory was 121.6MB in the beginning and 178.3MB in the end (delta: 56.6MB). Free memory was 88.5MB in the beginning and 98.1MB in the end (delta: -9.6MB). Peak memory consumption was 77.9MB. Max. memory is 16.1GB. [2022-07-20 02:23:58,626 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory is still 72.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2119.61ms. Allocated memory was 121.6MB in the beginning and 178.3MB in the end (delta: 56.6MB). Free memory was 88.5MB in the beginning and 98.1MB in the end (delta: -9.6MB). Peak memory consumption was 77.9MB. 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-?-eb692b5 [2022-07-20 02:24:00,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 02:24:00,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 02:24:00,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 02:24:00,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 02:24:00,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 02:24:00,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 02:24:00,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 02:24:00,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 02:24:00,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 02:24:00,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 02:24:00,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 02:24:00,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 02:24:00,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 02:24:00,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 02:24:00,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 02:24:00,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 02:24:00,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 02:24:00,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 02:24:00,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 02:24:00,378 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 02:24:00,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 02:24:00,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 02:24:00,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 02:24:00,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 02:24:00,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 02:24:00,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 02:24:00,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 02:24:00,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 02:24:00,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 02:24:00,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 02:24:00,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 02:24:00,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 02:24:00,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 02:24:00,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 02:24:00,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 02:24:00,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 02:24:00,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 02:24:00,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 02:24:00,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 02:24:00,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 02:24:00,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 02:24:00,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-20 02:24:00,425 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 02:24:00,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 02:24:00,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 02:24:00,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 02:24:00,427 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 02:24:00,427 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 02:24:00,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 02:24:00,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 02:24:00,428 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 02:24:00,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 02:24:00,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 02:24:00,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 02:24:00,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 02:24:00,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 02:24:00,429 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 02:24:00,430 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 02:24:00,430 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 02:24:00,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 02:24:00,430 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 02:24:00,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 02:24:00,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 02:24:00,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 02:24:00,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 02:24:00,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 02:24:00,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 02:24:00,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 02:24:00,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 02:24:00,431 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 02:24:00,432 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 02:24:00,432 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 02:24:00,432 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 02:24:00,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 02:24:00,432 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 02:24:00,432 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24362a0e750636c52038fc4d3468ffab15d6b74376c584ca05819f34fdf58260 [2022-07-20 02:24:00,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 02:24:00,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 02:24:00,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 02:24:00,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 02:24:00,818 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 02:24:00,819 INFO L432 ainManager$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 [2022-07-20 02:24:00,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d810e7ea/aee925de928f4b1e8a188d02b4b13d40/FLAG67f5358d8 [2022-07-20 02:24:01,519 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 02:24:01,519 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 [2022-07-20 02:24:01,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d810e7ea/aee925de928f4b1e8a188d02b4b13d40/FLAG67f5358d8 [2022-07-20 02:24:01,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d810e7ea/aee925de928f4b1e8a188d02b4b13d40 [2022-07-20 02:24:01,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 02:24:01,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 02:24:01,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 02:24:01,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 02:24:01,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 02:24:01,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:24:01" (1/1) ... [2022-07-20 02:24:01,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dda2563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:01, skipping insertion in model container [2022-07-20 02:24:01,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:24:01" (1/1) ... [2022-07-20 02:24:01,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 02:24:02,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 02:24:04,015 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] [2022-07-20 02:24:04,022 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] [2022-07-20 02:24:04,023 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] [2022-07-20 02:24:04,024 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] [2022-07-20 02:24:04,044 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 02:24:04,089 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 02:24:04,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 02:24:04,360 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] [2022-07-20 02:24:04,361 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] [2022-07-20 02:24:04,361 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] [2022-07-20 02:24:04,362 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] [2022-07-20 02:24:04,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 02:24:04,387 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 02:24:04,596 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] [2022-07-20 02:24:04,597 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] [2022-07-20 02:24:04,597 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] [2022-07-20 02:24:04,598 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] [2022-07-20 02:24:04,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 02:24:04,756 INFO L208 MainTranslator]: Completed translation [2022-07-20 02:24:04,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:04 WrapperNode [2022-07-20 02:24:04,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 02:24:04,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 02:24:04,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 02:24:04,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 02:24:04,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:04" (1/1) ... [2022-07-20 02:24:04,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:04" (1/1) ... [2022-07-20 02:24:05,025 INFO L137 Inliner]: procedures = 405, calls = 3756, calls flagged for inlining = 180, calls inlined = 163, statements flattened = 7511 [2022-07-20 02:24:05,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 02:24:05,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 02:24:05,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 02:24:05,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 02:24:05,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:04" (1/1) ... [2022-07-20 02:24:05,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:04" (1/1) ... [2022-07-20 02:24:05,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:04" (1/1) ... [2022-07-20 02:24:05,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:04" (1/1) ... [2022-07-20 02:24:05,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:04" (1/1) ... [2022-07-20 02:24:05,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:04" (1/1) ... [2022-07-20 02:24:05,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:04" (1/1) ... [2022-07-20 02:24:05,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 02:24:05,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 02:24:05,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 02:24:05,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 02:24:05,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:04" (1/1) ... [2022-07-20 02:24:05,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 02:24:05,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 02:24:05,285 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) [2022-07-20 02:24:05,291 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 [2022-07-20 02:24:05,311 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_write_reg_nopm [2022-07-20 02:24:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_write_reg_nopm [2022-07-20 02:24:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-20 02:24:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-20 02:24:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_nway_reset [2022-07-20 02:24:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_nway_reset [2022-07-20 02:24:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 02:24:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 02:24:05,312 INFO L130 BoogieDeclarations]: Found specification of procedure smsc_crc [2022-07-20 02:24:05,313 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc_crc [2022-07-20 02:24:05,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-20 02:24:05,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2022-07-20 02:24:05,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_61 [2022-07-20 02:24:05,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_61 [2022-07-20 02:24:05,355 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_enable_phy_wakeup_interrupts [2022-07-20 02:24:05,355 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_enable_phy_wakeup_interrupts [2022-07-20 02:24:05,355 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_reset [2022-07-20 02:24:05,355 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_reset [2022-07-20 02:24:05,355 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_wait_eeprom [2022-07-20 02:24:05,355 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_wait_eeprom [2022-07-20 02:24:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc75xx_mdio_write [2022-07-20 02:24:05,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc75xx_mdio_write [2022-07-20 02:24:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-20 02:24:05,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2022-07-20 02:24:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd_nopm [2022-07-20 02:24:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2022-07-20 02:24:05,356 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2022-07-20 02:24:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_rx_csum_offload [2022-07-20 02:24:05,356 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_rx_csum_offload [2022-07-20 02:24:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2022-07-20 02:24:05,356 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2022-07-20 02:24:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-20 02:24:05,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-20 02:24:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 02:24:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_set_features [2022-07-20 02:24:05,356 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_set_features [2022-07-20 02:24:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-20 02:24:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-20 02:24:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-20 02:24:05,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-20 02:24:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2022-07-20 02:24:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2022-07-20 02:24:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2022-07-20 02:24:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2022-07-20 02:24:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_tx_timeout [2022-07-20 02:24:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_tx_timeout [2022-07-20 02:24:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_mdio_read_nopm [2022-07-20 02:24:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_mdio_read_nopm [2022-07-20 02:24:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-20 02:24:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-20 02:24:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_write_cmd [2022-07-20 02:24:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc75xx_phy_wait_not_busy [2022-07-20 02:24:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc75xx_phy_wait_not_busy [2022-07-20 02:24:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2022-07-20 02:24:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2022-07-20 02:24:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_mdio_write [2022-07-20 02:24:05,357 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_mdio_write [2022-07-20 02:24:05,357 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd_nopm [2022-07-20 02:24:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-20 02:24:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2022-07-20 02:24:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 02:24:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2022-07-20 02:24:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2022-07-20 02:24:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2022-07-20 02:24:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2022-07-20 02:24:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 02:24:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-20 02:24:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-20 02:24:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-20 02:24:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-20 02:24:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 02:24:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-20 02:24:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-20 02:24:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-20 02:24:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_open [2022-07-20 02:24:05,358 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_open [2022-07-20 02:24:05,358 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_mdio_read [2022-07-20 02:24:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_mdio_read [2022-07-20 02:24:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_set_rx_max_frame_length [2022-07-20 02:24:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_set_rx_max_frame_length [2022-07-20 02:24:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2022-07-20 02:24:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2022-07-20 02:24:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-20 02:24:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 02:24:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 02:24:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc75xx_read_reg [2022-07-20 02:24:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc75xx_read_reg [2022-07-20 02:24:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-20 02:24:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-20 02:24:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-20 02:24:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-20 02:24:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-20 02:24:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_ethtool_get_eeprom_len [2022-07-20 02:24:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_ethtool_get_eeprom_len [2022-07-20 02:24:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-20 02:24:05,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-20 02:24:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-20 02:24:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-20 02:24:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-20 02:24:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-20 02:24:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-20 02:24:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_smsc75xx_driver_exit_6_2 [2022-07-20 02:24:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_smsc75xx_driver_exit_6_2 [2022-07-20 02:24:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-20 02:24:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-20 02:24:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-20 02:24:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2022-07-20 02:24:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_read_reg [2022-07-20 02:24:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_read_reg [2022-07-20 02:24:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_stop [2022-07-20 02:24:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_stop [2022-07-20 02:24:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-20 02:24:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-20 02:24:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_mdio_write_nopm [2022-07-20 02:24:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_mdio_write_nopm [2022-07-20 02:24:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_set_multicast [2022-07-20 02:24:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_set_multicast [2022-07-20 02:24:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 02:24:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-07-20 02:24:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-07-20 02:24:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 02:24:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-20 02:24:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-20 02:24:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-20 02:24:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-20 02:24:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 02:24:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-20 02:24:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-20 02:24:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-20 02:24:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-20 02:24:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc75xx_mdio_read [2022-07-20 02:24:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc75xx_mdio_read [2022-07-20 02:24:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2022-07-20 02:24:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2022-07-20 02:24:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-20 02:24:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-20 02:24:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_read_reg_nopm [2022-07-20 02:24:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_read_reg_nopm [2022-07-20 02:24:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-07-20 02:24:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-07-20 02:24:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure __smsc75xx_write_reg [2022-07-20 02:24:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure __smsc75xx_write_reg [2022-07-20 02:24:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_instance_release_2_4 [2022-07-20 02:24:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_instance_release_2_4 [2022-07-20 02:24:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-20 02:24:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-20 02:24:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_wait_ready [2022-07-20 02:24:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_wait_ready [2022-07-20 02:24:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-20 02:24:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-20 02:24:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-20 02:24:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-20 02:24:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-20 02:24:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-20 02:24:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_read_eeprom [2022-07-20 02:24:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_read_eeprom [2022-07-20 02:24:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-20 02:24:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-20 02:24:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_read_cmd [2022-07-20 02:24:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_link_reset [2022-07-20 02:24:05,367 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_link_reset [2022-07-20 02:24:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_resume [2022-07-20 02:24:05,368 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_resume [2022-07-20 02:24:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_write_wuff [2022-07-20 02:24:05,368 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_write_wuff [2022-07-20 02:24:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_eeprom_confirm_not_busy [2022-07-20 02:24:05,368 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_eeprom_confirm_not_busy [2022-07-20 02:24:05,368 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 [2022-07-20 02:24:05,368 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 [2022-07-20 02:24:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2022-07-20 02:24:05,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2022-07-20 02:24:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_enter_suspend2 [2022-07-20 02:24:05,369 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_enter_suspend2 [2022-07-20 02:24:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_enter_suspend1 [2022-07-20 02:24:05,369 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_enter_suspend1 [2022-07-20 02:24:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure smsc75xx_write_reg [2022-07-20 02:24:05,369 INFO L138 BoogieDeclarations]: Found implementation of procedure smsc75xx_write_reg [2022-07-20 02:24:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rfe_ctl_lock_of_smsc75xx_priv [2022-07-20 02:24:05,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rfe_ctl_lock_of_smsc75xx_priv [2022-07-20 02:24:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2022-07-20 02:24:05,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2022-07-20 02:24:05,983 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 02:24:05,986 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 02:24:06,118 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-20 02:24:57,756 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2022-07-20 02:24:57,791 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 02:24:57,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 02:24:57,809 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-20 02:24:57,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:24:57 BoogieIcfgContainer [2022-07-20 02:24:57,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 02:24:57,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 02:24:57,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 02:24:57,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 02:24:57,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:24:01" (1/3) ... [2022-07-20 02:24:57,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eeffdb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:24:57, skipping insertion in model container [2022-07-20 02:24:57,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:24:04" (2/3) ... [2022-07-20 02:24:57,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eeffdb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:24:57, skipping insertion in model container [2022-07-20 02:24:57,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:24:57" (3/3) ... [2022-07-20 02:24:57,819 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-usb-smsc75xx.cil.i [2022-07-20 02:24:57,829 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 02:24:57,830 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-07-20 02:24:57,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 02:24:57,901 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@55a064d2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1d2b05a8 [2022-07-20 02:24:57,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-20 02:24:57,908 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) [2022-07-20 02:24:57,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-20 02:24:57,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:24:57,925 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] [2022-07-20 02:24:57,925 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)] === [2022-07-20 02:24:57,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:24:57,928 INFO L85 PathProgramCache]: Analyzing trace with hash -747547048, now seen corresponding path program 1 times [2022-07-20 02:24:57,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:24:57,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570938676] [2022-07-20 02:24:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:24:57,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:24:57,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:24:57,943 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) [2022-07-20 02:24:57,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 02:24:59,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:24:59,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 02:24:59,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:24:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2022-07-20 02:24:59,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:24:59,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:24:59,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570938676] [2022-07-20 02:24:59,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570938676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:24:59,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:24:59,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 02:24:59,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658788223] [2022-07-20 02:24:59,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:24:59,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 02:24:59,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:24:59,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 02:24:59,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 02:24:59,294 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) [2022-07-20 02:24:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:24:59,758 INFO L93 Difference]: Finished difference Result 5006 states and 7625 transitions. [2022-07-20 02:24:59,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 02:24:59,760 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 [2022-07-20 02:24:59,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:24:59,790 INFO L225 Difference]: With dead ends: 5006 [2022-07-20 02:24:59,790 INFO L226 Difference]: Without dead ends: 3304 [2022-07-20 02:24:59,803 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 [2022-07-20 02:24:59,805 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 [2022-07-20 02:24:59,805 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] [2022-07-20 02:24:59,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3304 states. [2022-07-20 02:24:59,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3304 to 3300. [2022-07-20 02:24:59,947 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) [2022-07-20 02:24:59,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4753 transitions. [2022-07-20 02:24:59,967 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4753 transitions. Word has length 217 [2022-07-20 02:24:59,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:24:59,968 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 4753 transitions. [2022-07-20 02:24:59,968 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) [2022-07-20 02:24:59,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4753 transitions. [2022-07-20 02:24:59,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-20 02:24:59,987 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:24:59,988 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] [2022-07-20 02:25:00,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-20 02:25:00,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:25:00,189 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)] === [2022-07-20 02:25:00,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:25:00,189 INFO L85 PathProgramCache]: Analyzing trace with hash 379538310, now seen corresponding path program 1 times [2022-07-20 02:25:00,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:25:00,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323023718] [2022-07-20 02:25:00,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:25:00,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:25:00,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:25:00,193 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) [2022-07-20 02:25:00,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 02:25:01,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:25:01,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 02:25:01,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:25:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 1224 trivial. 0 not checked. [2022-07-20 02:25:01,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:25:01,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:25:01,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323023718] [2022-07-20 02:25:01,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323023718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:25:01,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:25:01,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 02:25:01,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118626696] [2022-07-20 02:25:01,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:25:01,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 02:25:01,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:25:01,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 02:25:01,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 02:25:01,281 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) [2022-07-20 02:25:01,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:25:01,848 INFO L93 Difference]: Finished difference Result 7817 states and 11269 transitions. [2022-07-20 02:25:01,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 02:25:01,849 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 [2022-07-20 02:25:01,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:25:01,888 INFO L225 Difference]: With dead ends: 7817 [2022-07-20 02:25:01,889 INFO L226 Difference]: Without dead ends: 4556 [2022-07-20 02:25:01,905 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 [2022-07-20 02:25:01,906 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 [2022-07-20 02:25:01,906 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] [2022-07-20 02:25:01,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4556 states. [2022-07-20 02:25:02,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4556 to 4529. [2022-07-20 02:25:02,020 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) [2022-07-20 02:25:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 6527 transitions. [2022-07-20 02:25:02,046 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 6527 transitions. Word has length 228 [2022-07-20 02:25:02,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:25:02,047 INFO L495 AbstractCegarLoop]: Abstraction has 4529 states and 6527 transitions. [2022-07-20 02:25:02,047 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) [2022-07-20 02:25:02,047 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 6527 transitions. [2022-07-20 02:25:02,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-07-20 02:25:02,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:25:02,052 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] [2022-07-20 02:25:02,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 02:25:02,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:25:02,267 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)] === [2022-07-20 02:25:02,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:25:02,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1569969785, now seen corresponding path program 1 times [2022-07-20 02:25:02,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:25:02,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893307415] [2022-07-20 02:25:02,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:25:02,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:25:02,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:25:02,270 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) [2022-07-20 02:25:02,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 02:25:03,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:25:03,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 1943 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 02:25:03,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:25:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 1398 trivial. 0 not checked. [2022-07-20 02:25:03,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:25:03,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:25:03,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893307415] [2022-07-20 02:25:03,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893307415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:25:03,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:25:03,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 02:25:03,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235078731] [2022-07-20 02:25:03,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:25:03,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 02:25:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:25:03,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 02:25:03,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 02:25:03,467 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) [2022-07-20 02:25:03,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:25:03,856 INFO L93 Difference]: Finished difference Result 10620 states and 15308 transitions. [2022-07-20 02:25:03,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 02:25:03,857 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 [2022-07-20 02:25:03,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:25:03,899 INFO L225 Difference]: With dead ends: 10620 [2022-07-20 02:25:03,900 INFO L226 Difference]: Without dead ends: 7492 [2022-07-20 02:25:03,916 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 [2022-07-20 02:25:03,920 INFO L413 NwaCegarLoop]: 4745 mSDtfsCounter, 2278 mSDsluCounter, 2434 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 7179 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 02:25:03,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 7179 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 02:25:03,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7492 states. [2022-07-20 02:25:04,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7492 to 7488. [2022-07-20 02:25:04,124 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) [2022-07-20 02:25:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7488 states to 7488 states and 10793 transitions. [2022-07-20 02:25:04,154 INFO L78 Accepts]: Start accepts. Automaton has 7488 states and 10793 transitions. Word has length 276 [2022-07-20 02:25:04,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:25:04,155 INFO L495 AbstractCegarLoop]: Abstraction has 7488 states and 10793 transitions. [2022-07-20 02:25:04,156 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) [2022-07-20 02:25:04,156 INFO L276 IsEmpty]: Start isEmpty. Operand 7488 states and 10793 transitions. [2022-07-20 02:25:04,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-07-20 02:25:04,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:25:04,162 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] [2022-07-20 02:25:04,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-20 02:25:04,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:25:04,383 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)] === [2022-07-20 02:25:04,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:25:04,384 INFO L85 PathProgramCache]: Analyzing trace with hash -801769477, now seen corresponding path program 1 times [2022-07-20 02:25:04,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:25:04,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611207625] [2022-07-20 02:25:04,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:25:04,385 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:25:04,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:25:04,388 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) [2022-07-20 02:25:04,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 02:25:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:25:05,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 1943 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:25:05,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:25:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2022-07-20 02:25:06,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:25:06,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:25:06,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611207625] [2022-07-20 02:25:06,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611207625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:25:06,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:25:06,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 02:25:06,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370101151] [2022-07-20 02:25:06,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:25:06,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:25:06,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:25:06,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:25:06,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 02:25:06,317 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) [2022-07-20 02:25:06,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:25:06,543 INFO L93 Difference]: Finished difference Result 7494 states and 10798 transitions. [2022-07-20 02:25:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 02:25:06,543 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 [2022-07-20 02:25:06,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:25:06,581 INFO L225 Difference]: With dead ends: 7494 [2022-07-20 02:25:06,581 INFO L226 Difference]: Without dead ends: 7492 [2022-07-20 02:25:06,586 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 [2022-07-20 02:25:06,587 INFO L413 NwaCegarLoop]: 2464 mSDtfsCounter, 2359 mSDsluCounter, 4916 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 02:25:06,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 7380 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 02:25:06,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7492 states. [2022-07-20 02:25:06,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7492 to 7492. [2022-07-20 02:25:06,826 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) [2022-07-20 02:25:06,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7492 states to 7492 states and 10796 transitions. [2022-07-20 02:25:06,849 INFO L78 Accepts]: Start accepts. Automaton has 7492 states and 10796 transitions. Word has length 276 [2022-07-20 02:25:06,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:25:06,850 INFO L495 AbstractCegarLoop]: Abstraction has 7492 states and 10796 transitions. [2022-07-20 02:25:06,850 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) [2022-07-20 02:25:06,850 INFO L276 IsEmpty]: Start isEmpty. Operand 7492 states and 10796 transitions. [2022-07-20 02:25:06,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-07-20 02:25:06,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:25:06,856 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] [2022-07-20 02:25:06,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-20 02:25:07,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:25:07,071 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)] === [2022-07-20 02:25:07,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:25:07,072 INFO L85 PathProgramCache]: Analyzing trace with hash -66650535, now seen corresponding path program 1 times [2022-07-20 02:25:07,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:25:07,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335556396] [2022-07-20 02:25:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:25:07,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:25:07,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:25:07,084 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) [2022-07-20 02:25:07,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 02:25:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:25:08,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:25:08,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:25:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1484 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2022-07-20 02:25:09,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 02:25:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1484 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2022-07-20 02:25:09,517 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:25:09,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335556396] [2022-07-20 02:25:09,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335556396] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 02:25:09,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 02:25:09,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 02:25:09,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301086282] [2022-07-20 02:25:09,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:25:09,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:25:09,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:25:09,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:25:09,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 02:25:09,519 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) [2022-07-20 02:25:09,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:25:09,781 INFO L93 Difference]: Finished difference Result 7498 states and 10801 transitions. [2022-07-20 02:25:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 02:25:09,782 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 [2022-07-20 02:25:09,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:25:09,810 INFO L225 Difference]: With dead ends: 7498 [2022-07-20 02:25:09,819 INFO L226 Difference]: Without dead ends: 7496 [2022-07-20 02:25:09,823 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 [2022-07-20 02:25:09,835 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2395 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 02:25:09,835 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] [2022-07-20 02:25:09,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7496 states. [2022-07-20 02:25:10,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7496 to 7496. [2022-07-20 02:25:10,018 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) [2022-07-20 02:25:10,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 10799 transitions. [2022-07-20 02:25:10,042 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 10799 transitions. Word has length 281 [2022-07-20 02:25:10,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:25:10,043 INFO L495 AbstractCegarLoop]: Abstraction has 7496 states and 10799 transitions. [2022-07-20 02:25:10,043 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) [2022-07-20 02:25:10,043 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 10799 transitions. [2022-07-20 02:25:10,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-07-20 02:25:10,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:25:10,050 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] [2022-07-20 02:25:10,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 02:25:10,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:25:10,260 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)] === [2022-07-20 02:25:10,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:25:10,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1752062587, now seen corresponding path program 1 times [2022-07-20 02:25:10,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:25:10,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [199643730] [2022-07-20 02:25:10,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:25:10,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:25:10,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:25:10,263 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) [2022-07-20 02:25:10,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 02:25:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:25:11,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1957 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:25:11,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:25:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1490 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2022-07-20 02:25:12,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 02:25:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1490 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1486 trivial. 0 not checked. [2022-07-20 02:25:12,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:25:12,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [199643730] [2022-07-20 02:25:12,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [199643730] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 02:25:12,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 02:25:12,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 02:25:12,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455589295] [2022-07-20 02:25:12,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:25:12,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:25:12,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:25:12,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:25:12,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 02:25:12,569 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) [2022-07-20 02:25:12,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:25:12,763 INFO L93 Difference]: Finished difference Result 7502 states and 10804 transitions. [2022-07-20 02:25:12,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 02:25:12,764 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 [2022-07-20 02:25:12,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:25:12,836 INFO L225 Difference]: With dead ends: 7502 [2022-07-20 02:25:12,836 INFO L226 Difference]: Without dead ends: 7500 [2022-07-20 02:25:12,839 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 [2022-07-20 02:25:12,839 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 [2022-07-20 02:25:12,840 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] [2022-07-20 02:25:12,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7500 states. [2022-07-20 02:25:12,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7500 to 7500. [2022-07-20 02:25:12,993 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) [2022-07-20 02:25:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7500 states to 7500 states and 10802 transitions. [2022-07-20 02:25:13,013 INFO L78 Accepts]: Start accepts. Automaton has 7500 states and 10802 transitions. Word has length 286 [2022-07-20 02:25:13,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:25:13,014 INFO L495 AbstractCegarLoop]: Abstraction has 7500 states and 10802 transitions. [2022-07-20 02:25:13,014 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) [2022-07-20 02:25:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand 7500 states and 10802 transitions. [2022-07-20 02:25:13,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-07-20 02:25:13,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:25:13,021 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] [2022-07-20 02:25:13,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 02:25:13,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:25:13,246 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)] === [2022-07-20 02:25:13,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:25:13,247 INFO L85 PathProgramCache]: Analyzing trace with hash -906189480, now seen corresponding path program 1 times [2022-07-20 02:25:13,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:25:13,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836626709] [2022-07-20 02:25:13,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:25:13,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:25:13,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:25:13,250 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) [2022-07-20 02:25:13,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-20 02:25:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:25:14,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 2006 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 02:25:14,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:25:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1509 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2022-07-20 02:25:14,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:25:14,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:25:14,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836626709] [2022-07-20 02:25:14,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836626709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:25:14,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:25:14,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 02:25:14,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399175229] [2022-07-20 02:25:14,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:25:14,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 02:25:14,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:25:14,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 02:25:14,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 02:25:14,354 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) [2022-07-20 02:25:14,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:25:14,811 INFO L93 Difference]: Finished difference Result 16594 states and 23899 transitions. [2022-07-20 02:25:14,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 02:25:14,812 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 [2022-07-20 02:25:14,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:25:14,842 INFO L225 Difference]: With dead ends: 16594 [2022-07-20 02:25:14,842 INFO L226 Difference]: Without dead ends: 10495 [2022-07-20 02:25:14,860 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 [2022-07-20 02:25:14,861 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 [2022-07-20 02:25:14,862 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] [2022-07-20 02:25:14,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10495 states. [2022-07-20 02:25:15,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10495 to 10461. [2022-07-20 02:25:15,206 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) [2022-07-20 02:25:15,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10461 states to 10461 states and 15070 transitions. [2022-07-20 02:25:15,237 INFO L78 Accepts]: Start accepts. Automaton has 10461 states and 15070 transitions. Word has length 300 [2022-07-20 02:25:15,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:25:15,238 INFO L495 AbstractCegarLoop]: Abstraction has 10461 states and 15070 transitions. [2022-07-20 02:25:15,238 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) [2022-07-20 02:25:15,238 INFO L276 IsEmpty]: Start isEmpty. Operand 10461 states and 15070 transitions. [2022-07-20 02:25:15,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-20 02:25:15,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:25:15,245 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] [2022-07-20 02:25:15,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-07-20 02:25:15,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:25:15,472 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)] === [2022-07-20 02:25:15,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:25:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash -597533863, now seen corresponding path program 1 times [2022-07-20 02:25:15,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:25:15,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310641508] [2022-07-20 02:25:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:25:15,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:25:15,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:25:15,476 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) [2022-07-20 02:25:15,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-20 02:25:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:25:16,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 1964 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:25:16,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:25:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1494 trivial. 0 not checked. [2022-07-20 02:25:17,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 02:25:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1500 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1494 trivial. 0 not checked. [2022-07-20 02:25:17,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:25:17,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310641508] [2022-07-20 02:25:17,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310641508] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 02:25:17,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 02:25:17,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 02:25:17,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832862045] [2022-07-20 02:25:17,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:25:17,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:25:17,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:25:17,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:25:17,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 02:25:17,753 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) [2022-07-20 02:25:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:25:18,036 INFO L93 Difference]: Finished difference Result 10467 states and 15075 transitions. [2022-07-20 02:25:18,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 02:25:18,036 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 [2022-07-20 02:25:18,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:25:18,072 INFO L225 Difference]: With dead ends: 10467 [2022-07-20 02:25:18,073 INFO L226 Difference]: Without dead ends: 10465 [2022-07-20 02:25:18,079 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 [2022-07-20 02:25:18,079 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 [2022-07-20 02:25:18,080 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] [2022-07-20 02:25:18,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10465 states. [2022-07-20 02:25:18,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10465 to 10465. [2022-07-20 02:25:18,386 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) [2022-07-20 02:25:18,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10465 states to 10465 states and 15073 transitions. [2022-07-20 02:25:18,419 INFO L78 Accepts]: Start accepts. Automaton has 10465 states and 15073 transitions. Word has length 291 [2022-07-20 02:25:18,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:25:18,420 INFO L495 AbstractCegarLoop]: Abstraction has 10465 states and 15073 transitions. [2022-07-20 02:25:18,420 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) [2022-07-20 02:25:18,420 INFO L276 IsEmpty]: Start isEmpty. Operand 10465 states and 15073 transitions. [2022-07-20 02:25:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-07-20 02:25:18,427 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:25:18,427 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] [2022-07-20 02:25:18,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-20 02:25:18,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:25:18,643 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)] === [2022-07-20 02:25:18,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:25:18,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1004489979, now seen corresponding path program 1 times [2022-07-20 02:25:18,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:25:18,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466116374] [2022-07-20 02:25:18,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:25:18,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:25:18,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:25:18,656 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) [2022-07-20 02:25:18,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-20 02:25:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:25:19,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 1971 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:25:19,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:25:20,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-07-20 02:25:20,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 02:25:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1514 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1506 trivial. 0 not checked. [2022-07-20 02:25:21,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:25:21,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466116374] [2022-07-20 02:25:21,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466116374] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 02:25:21,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 02:25:21,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 02:25:21,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843616593] [2022-07-20 02:25:21,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:25:21,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:25:21,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:25:21,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:25:21,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 02:25:21,447 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) [2022-07-20 02:25:21,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:25:21,774 INFO L93 Difference]: Finished difference Result 10471 states and 15078 transitions. [2022-07-20 02:25:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 02:25:21,775 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 [2022-07-20 02:25:21,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:25:21,808 INFO L225 Difference]: With dead ends: 10471 [2022-07-20 02:25:21,808 INFO L226 Difference]: Without dead ends: 10469 [2022-07-20 02:25:21,814 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 [2022-07-20 02:25:21,815 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 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 [2022-07-20 02:25:21,815 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] [2022-07-20 02:25:21,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10469 states. [2022-07-20 02:25:22,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10469 to 10469. [2022-07-20 02:25:22,147 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) [2022-07-20 02:25:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10469 states to 10469 states and 15076 transitions. [2022-07-20 02:25:22,175 INFO L78 Accepts]: Start accepts. Automaton has 10469 states and 15076 transitions. Word has length 296 [2022-07-20 02:25:22,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:25:22,176 INFO L495 AbstractCegarLoop]: Abstraction has 10469 states and 15076 transitions. [2022-07-20 02:25:22,176 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) [2022-07-20 02:25:22,176 INFO L276 IsEmpty]: Start isEmpty. Operand 10469 states and 15076 transitions. [2022-07-20 02:25:22,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-07-20 02:25:22,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:25:22,182 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] [2022-07-20 02:25:22,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-20 02:25:22,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:25:22,404 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)] === [2022-07-20 02:25:22,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:25:22,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2120165465, now seen corresponding path program 1 times [2022-07-20 02:25:22,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:25:22,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409537988] [2022-07-20 02:25:22,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:25:22,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:25:22,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:25:22,416 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) [2022-07-20 02:25:22,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-20 02:25:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:25:23,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 1978 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:25:23,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:25:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1532 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1522 trivial. 0 not checked. [2022-07-20 02:25:24,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 02:25:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1532 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1522 trivial. 0 not checked. [2022-07-20 02:25:24,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:25:24,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409537988] [2022-07-20 02:25:24,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409537988] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 02:25:24,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 02:25:24,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 02:25:24,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443904750] [2022-07-20 02:25:24,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:25:24,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:25:24,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:25:24,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:25:24,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 02:25:24,724 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) [2022-07-20 02:25:25,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:25:25,039 INFO L93 Difference]: Finished difference Result 10475 states and 15081 transitions. [2022-07-20 02:25:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 02:25:25,039 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 [2022-07-20 02:25:25,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:25:25,068 INFO L225 Difference]: With dead ends: 10475 [2022-07-20 02:25:25,069 INFO L226 Difference]: Without dead ends: 10473 [2022-07-20 02:25:25,075 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 [2022-07-20 02:25:25,075 INFO L413 NwaCegarLoop]: 2467 mSDtfsCounter, 2385 mSDsluCounter, 4915 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2391 SdHoareTripleChecker+Valid, 7382 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 02:25:25,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2391 Valid, 7382 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 02:25:25,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10473 states. [2022-07-20 02:25:25,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10473 to 10473. [2022-07-20 02:25:25,394 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) [2022-07-20 02:25:25,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10473 states to 10473 states and 15079 transitions. [2022-07-20 02:25:25,418 INFO L78 Accepts]: Start accepts. Automaton has 10473 states and 15079 transitions. Word has length 301 [2022-07-20 02:25:25,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:25:25,418 INFO L495 AbstractCegarLoop]: Abstraction has 10473 states and 15079 transitions. [2022-07-20 02:25:25,419 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) [2022-07-20 02:25:25,419 INFO L276 IsEmpty]: Start isEmpty. Operand 10473 states and 15079 transitions. [2022-07-20 02:25:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-07-20 02:25:25,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:25:25,425 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] [2022-07-20 02:25:25,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-20 02:25:25,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:25:25,648 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)] === [2022-07-20 02:25:25,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:25:25,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1226100603, now seen corresponding path program 1 times [2022-07-20 02:25:25,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:25:25,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926264364] [2022-07-20 02:25:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:25:25,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:25:25,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:25:25,652 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) [2022-07-20 02:25:25,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-20 02:25:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:25:26,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:25:26,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:25:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2022-07-20 02:25:27,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 02:25:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1542 trivial. 0 not checked. [2022-07-20 02:25:27,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:25:27,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926264364] [2022-07-20 02:25:27,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926264364] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 02:25:27,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 02:25:27,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 02:25:27,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536836102] [2022-07-20 02:25:27,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:25:27,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:25:27,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:25:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:25:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 02:25:27,968 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) [2022-07-20 02:25:28,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:25:28,299 INFO L93 Difference]: Finished difference Result 10479 states and 15084 transitions. [2022-07-20 02:25:28,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 02:25:28,300 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 [2022-07-20 02:25:28,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:25:28,329 INFO L225 Difference]: With dead ends: 10479 [2022-07-20 02:25:28,329 INFO L226 Difference]: Without dead ends: 10477 [2022-07-20 02:25:28,335 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 [2022-07-20 02:25:28,336 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 [2022-07-20 02:25:28,336 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] [2022-07-20 02:25:28,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10477 states. [2022-07-20 02:25:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10477 to 10477. [2022-07-20 02:25:28,669 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) [2022-07-20 02:25:28,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10477 states to 10477 states and 15082 transitions. [2022-07-20 02:25:28,700 INFO L78 Accepts]: Start accepts. Automaton has 10477 states and 15082 transitions. Word has length 306 [2022-07-20 02:25:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:25:28,701 INFO L495 AbstractCegarLoop]: Abstraction has 10477 states and 15082 transitions. [2022-07-20 02:25:28,701 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) [2022-07-20 02:25:28,701 INFO L276 IsEmpty]: Start isEmpty. Operand 10477 states and 15082 transitions. [2022-07-20 02:25:28,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-07-20 02:25:28,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:25:28,782 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] [2022-07-20 02:25:28,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-20 02:25:28,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:25:28,991 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)] === [2022-07-20 02:25:28,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:25:28,992 INFO L85 PathProgramCache]: Analyzing trace with hash 452027737, now seen corresponding path program 1 times [2022-07-20 02:25:28,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:25:28,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095358216] [2022-07-20 02:25:28,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:25:28,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:25:28,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:25:29,008 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) [2022-07-20 02:25:29,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-20 02:25:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:25:30,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 1992 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:25:30,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:25:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1566 trivial. 0 not checked. [2022-07-20 02:25:30,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 02:25:31,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1566 trivial. 0 not checked. [2022-07-20 02:25:31,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:25:31,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095358216] [2022-07-20 02:25:31,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095358216] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 02:25:31,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 02:25:31,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 02:25:31,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188328924] [2022-07-20 02:25:31,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:25:31,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:25:31,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:25:31,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:25:31,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 02:25:31,159 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) [2022-07-20 02:25:31,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:25:31,454 INFO L93 Difference]: Finished difference Result 10483 states and 15087 transitions. [2022-07-20 02:25:31,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 02:25:31,455 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 [2022-07-20 02:25:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:25:31,489 INFO L225 Difference]: With dead ends: 10483 [2022-07-20 02:25:31,490 INFO L226 Difference]: Without dead ends: 10481 [2022-07-20 02:25:31,497 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 [2022-07-20 02:25:31,498 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 [2022-07-20 02:25:31,498 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] [2022-07-20 02:25:31,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10481 states. [2022-07-20 02:25:31,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10481 to 10481. [2022-07-20 02:25:31,909 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) [2022-07-20 02:25:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10481 states to 10481 states and 15085 transitions. [2022-07-20 02:25:31,940 INFO L78 Accepts]: Start accepts. Automaton has 10481 states and 15085 transitions. Word has length 311 [2022-07-20 02:25:31,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:25:31,941 INFO L495 AbstractCegarLoop]: Abstraction has 10481 states and 15085 transitions. [2022-07-20 02:25:31,941 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) [2022-07-20 02:25:31,941 INFO L276 IsEmpty]: Start isEmpty. Operand 10481 states and 15085 transitions. [2022-07-20 02:25:31,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-07-20 02:25:31,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:25:31,950 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] [2022-07-20 02:25:31,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-20 02:25:32,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:25:32,163 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)] === [2022-07-20 02:25:32,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:25:32,164 INFO L85 PathProgramCache]: Analyzing trace with hash -811933189, now seen corresponding path program 1 times [2022-07-20 02:25:32,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:25:32,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835305337] [2022-07-20 02:25:32,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:25:32,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:25:32,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:25:32,180 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) [2022-07-20 02:25:32,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-20 02:25:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:25:33,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 1999 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:25:33,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:25:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2022-07-20 02:25:34,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 02:25:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1594 trivial. 0 not checked. [2022-07-20 02:25:34,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:25:34,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835305337] [2022-07-20 02:25:34,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835305337] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 02:25:34,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 02:25:34,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 02:25:34,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992066126] [2022-07-20 02:25:34,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:25:34,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:25:34,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:25:34,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:25:34,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 02:25:34,618 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) [2022-07-20 02:25:34,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:25:34,891 INFO L93 Difference]: Finished difference Result 10487 states and 15090 transitions. [2022-07-20 02:25:34,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 02:25:34,892 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 [2022-07-20 02:25:34,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:25:34,920 INFO L225 Difference]: With dead ends: 10487 [2022-07-20 02:25:34,920 INFO L226 Difference]: Without dead ends: 10485 [2022-07-20 02:25:34,925 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 [2022-07-20 02:25:34,926 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 [2022-07-20 02:25:34,926 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] [2022-07-20 02:25:34,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10485 states. [2022-07-20 02:25:35,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10485 to 10485. [2022-07-20 02:25:35,264 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) [2022-07-20 02:25:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10485 states to 10485 states and 15088 transitions. [2022-07-20 02:25:35,291 INFO L78 Accepts]: Start accepts. Automaton has 10485 states and 15088 transitions. Word has length 316 [2022-07-20 02:25:35,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:25:35,292 INFO L495 AbstractCegarLoop]: Abstraction has 10485 states and 15088 transitions. [2022-07-20 02:25:35,292 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) [2022-07-20 02:25:35,292 INFO L276 IsEmpty]: Start isEmpty. Operand 10485 states and 15088 transitions. [2022-07-20 02:25:35,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-07-20 02:25:35,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:25:35,300 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] [2022-07-20 02:25:35,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-07-20 02:25:35,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:25:35,515 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)] === [2022-07-20 02:25:35,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:25:35,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1242370649, now seen corresponding path program 1 times [2022-07-20 02:25:35,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:25:35,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839288582] [2022-07-20 02:25:35,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:25:35,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:25:35,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:25:35,519 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) [2022-07-20 02:25:35,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-20 02:25:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:25:36,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 2006 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:25:36,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:25:37,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1644 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1626 trivial. 0 not checked. [2022-07-20 02:25:37,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 02:25:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1644 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1626 trivial. 0 not checked. [2022-07-20 02:25:37,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:25:37,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839288582] [2022-07-20 02:25:37,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839288582] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 02:25:37,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 02:25:37,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 02:25:37,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872815781] [2022-07-20 02:25:37,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:25:37,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:25:37,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:25:37,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:25:37,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 02:25:37,915 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) [2022-07-20 02:25:38,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:25:38,295 INFO L93 Difference]: Finished difference Result 10540 states and 15128 transitions. [2022-07-20 02:25:38,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 02:25:38,296 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 [2022-07-20 02:25:38,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:25:38,322 INFO L225 Difference]: With dead ends: 10540 [2022-07-20 02:25:38,322 INFO L226 Difference]: Without dead ends: 10538 [2022-07-20 02:25:38,326 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 [2022-07-20 02:25:38,327 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 [2022-07-20 02:25:38,327 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] [2022-07-20 02:25:38,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10538 states. [2022-07-20 02:25:38,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10538 to 10538. [2022-07-20 02:25:38,681 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) [2022-07-20 02:25:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10538 states to 10538 states and 15126 transitions. [2022-07-20 02:25:38,713 INFO L78 Accepts]: Start accepts. Automaton has 10538 states and 15126 transitions. Word has length 321 [2022-07-20 02:25:38,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:25:38,714 INFO L495 AbstractCegarLoop]: Abstraction has 10538 states and 15126 transitions. [2022-07-20 02:25:38,714 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) [2022-07-20 02:25:38,714 INFO L276 IsEmpty]: Start isEmpty. Operand 10538 states and 15126 transitions. [2022-07-20 02:25:38,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-07-20 02:25:38,724 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:25:38,725 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] [2022-07-20 02:25:38,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-20 02:25:38,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:25:38,952 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)] === [2022-07-20 02:25:38,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:25:38,952 INFO L85 PathProgramCache]: Analyzing trace with hash 234180815, now seen corresponding path program 1 times [2022-07-20 02:25:38,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:25:38,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266077698] [2022-07-20 02:25:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:25:38,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:25:38,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:25:38,955 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) [2022-07-20 02:25:38,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-20 02:25:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:25:40,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 2094 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-20 02:25:40,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:25:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1859 backedges. 311 proven. 3 refuted. 0 times theorem prover too weak. 1545 trivial. 0 not checked. [2022-07-20 02:25:40,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 02:25:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1859 backedges. 53 proven. 18 refuted. 0 times theorem prover too weak. 1788 trivial. 0 not checked. [2022-07-20 02:25:41,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:25:41,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266077698] [2022-07-20 02:25:41,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266077698] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 02:25:41,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 02:25:41,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 22 [2022-07-20 02:25:41,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556200645] [2022-07-20 02:25:41,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 02:25:41,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-20 02:25:41,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:25:41,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-20 02:25:41,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2022-07-20 02:25:41,153 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) [2022-07-20 02:25:56,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:25:56,086 INFO L93 Difference]: Finished difference Result 25740 states and 36905 transitions. [2022-07-20 02:25:56,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-20 02:25:56,087 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 [2022-07-20 02:25:56,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:25:56,138 INFO L225 Difference]: With dead ends: 25740 [2022-07-20 02:25:56,138 INFO L226 Difference]: Without dead ends: 16592 [2022-07-20 02:25:56,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 703 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2022-07-20 02:25:56,168 INFO L413 NwaCegarLoop]: 4714 mSDtfsCounter, 7758 mSDsluCounter, 61228 mSDsCounter, 0 mSdLazyCounter, 5508 mSolverCounterSat, 1209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7943 SdHoareTripleChecker+Valid, 65942 SdHoareTripleChecker+Invalid, 6717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1209 IncrementalHoareTripleChecker+Valid, 5508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-07-20 02:25:56,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7943 Valid, 65942 Invalid, 6717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1209 Valid, 5508 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2022-07-20 02:25:56,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16592 states. [2022-07-20 02:25:56,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16592 to 13539. [2022-07-20 02:25:56,645 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) [2022-07-20 02:25:56,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13539 states to 13539 states and 19430 transitions. [2022-07-20 02:25:56,684 INFO L78 Accepts]: Start accepts. Automaton has 13539 states and 19430 transitions. Word has length 362 [2022-07-20 02:25:56,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:25:56,685 INFO L495 AbstractCegarLoop]: Abstraction has 13539 states and 19430 transitions. [2022-07-20 02:25:56,685 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) [2022-07-20 02:25:56,685 INFO L276 IsEmpty]: Start isEmpty. Operand 13539 states and 19430 transitions. [2022-07-20 02:25:56,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-07-20 02:25:56,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:25:56,694 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] [2022-07-20 02:25:56,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-20 02:25:56,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:25:56,920 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)] === [2022-07-20 02:25:56,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:25:56,920 INFO L85 PathProgramCache]: Analyzing trace with hash 268272763, now seen corresponding path program 1 times [2022-07-20 02:25:56,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:25:56,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850686381] [2022-07-20 02:25:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:25:56,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:25:56,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:25:56,923 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) [2022-07-20 02:25:56,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-20 02:25:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:25:57,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 2013 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:25:57,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:25:59,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1662 trivial. 0 not checked. [2022-07-20 02:25:59,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 02:25:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1662 trivial. 0 not checked. [2022-07-20 02:25:59,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:25:59,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850686381] [2022-07-20 02:25:59,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850686381] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 02:25:59,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 02:25:59,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 02:25:59,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980505897] [2022-07-20 02:25:59,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:25:59,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:25:59,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:25:59,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:25:59,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 02:25:59,671 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) [2022-07-20 02:26:00,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:26:00,178 INFO L93 Difference]: Finished difference Result 13545 states and 19435 transitions. [2022-07-20 02:26:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 02:26:00,179 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 [2022-07-20 02:26:00,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:26:00,236 INFO L225 Difference]: With dead ends: 13545 [2022-07-20 02:26:00,236 INFO L226 Difference]: Without dead ends: 13541 [2022-07-20 02:26:00,245 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 [2022-07-20 02:26:00,246 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 [2022-07-20 02:26:00,246 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] [2022-07-20 02:26:00,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13541 states. [2022-07-20 02:26:00,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13541 to 13541. [2022-07-20 02:26:00,722 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) [2022-07-20 02:26:00,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13541 states to 13541 states and 19431 transitions. [2022-07-20 02:26:00,768 INFO L78 Accepts]: Start accepts. Automaton has 13541 states and 19431 transitions. Word has length 326 [2022-07-20 02:26:00,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:26:00,769 INFO L495 AbstractCegarLoop]: Abstraction has 13541 states and 19431 transitions. [2022-07-20 02:26:00,769 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) [2022-07-20 02:26:00,769 INFO L276 IsEmpty]: Start isEmpty. Operand 13541 states and 19431 transitions. [2022-07-20 02:26:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2022-07-20 02:26:00,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:26:00,780 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] [2022-07-20 02:26:00,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-20 02:26:01,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:26:01,008 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)] === [2022-07-20 02:26:01,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:26:01,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1118187353, now seen corresponding path program 1 times [2022-07-20 02:26:01,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:26:01,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904531485] [2022-07-20 02:26:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:26:01,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:26:01,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:26:01,012 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) [2022-07-20 02:26:01,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-20 02:26:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:26:02,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 2020 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:26:02,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:26:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1724 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1702 trivial. 0 not checked. [2022-07-20 02:26:03,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 02:26:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1724 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 1702 trivial. 0 not checked. [2022-07-20 02:26:03,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:26:03,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904531485] [2022-07-20 02:26:03,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904531485] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-20 02:26:03,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-20 02:26:03,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-07-20 02:26:03,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310731919] [2022-07-20 02:26:03,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:26:03,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:26:03,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:26:03,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:26:03,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 02:26:03,697 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) [2022-07-20 02:26:04,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:26:04,178 INFO L93 Difference]: Finished difference Result 13541 states and 19431 transitions. [2022-07-20 02:26:04,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 02:26:04,178 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 [2022-07-20 02:26:04,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:26:04,250 INFO L225 Difference]: With dead ends: 13541 [2022-07-20 02:26:04,251 INFO L226 Difference]: Without dead ends: 13428 [2022-07-20 02:26:04,259 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 [2022-07-20 02:26:04,260 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 [2022-07-20 02:26:04,260 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] [2022-07-20 02:26:04,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13428 states. [2022-07-20 02:26:04,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13428 to 10471. [2022-07-20 02:26:04,657 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) [2022-07-20 02:26:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10471 states to 10471 states and 15043 transitions. [2022-07-20 02:26:04,688 INFO L78 Accepts]: Start accepts. Automaton has 10471 states and 15043 transitions. Word has length 331 [2022-07-20 02:26:04,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:26:04,688 INFO L495 AbstractCegarLoop]: Abstraction has 10471 states and 15043 transitions. [2022-07-20 02:26:04,689 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) [2022-07-20 02:26:04,689 INFO L276 IsEmpty]: Start isEmpty. Operand 10471 states and 15043 transitions. [2022-07-20 02:26:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-07-20 02:26:04,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:26:04,698 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] [2022-07-20 02:26:04,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-07-20 02:26:04,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:26:04,912 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)] === [2022-07-20 02:26:04,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:26:04,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1541849949, now seen corresponding path program 1 times [2022-07-20 02:26:04,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:26:04,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723054356] [2022-07-20 02:26:04,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:26:04,914 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:26:04,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:26:04,915 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) [2022-07-20 02:26:04,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-20 02:26:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:26:06,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 02:26:06,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:26:06,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-07-20 02:26:06,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:26:06,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:26:06,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723054356] [2022-07-20 02:26:06,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723054356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:26:06,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:26:06,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 02:26:06,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605359507] [2022-07-20 02:26:06,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:26:06,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 02:26:06,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:26:06,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 02:26:06,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 02:26:06,055 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) [2022-07-20 02:26:06,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:26:06,739 INFO L93 Difference]: Finished difference Result 22501 states and 32321 transitions. [2022-07-20 02:26:06,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 02:26:06,740 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 [2022-07-20 02:26:06,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:26:06,841 INFO L225 Difference]: With dead ends: 22501 [2022-07-20 02:26:06,841 INFO L226 Difference]: Without dead ends: 13432 [2022-07-20 02:26:06,860 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 [2022-07-20 02:26:06,860 INFO L413 NwaCegarLoop]: 4640 mSDtfsCounter, 2272 mSDsluCounter, 2387 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 02:26:06,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2272 Valid, 7027 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 02:26:06,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13432 states. [2022-07-20 02:26:07,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13432 to 10471. [2022-07-20 02:26:07,363 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) [2022-07-20 02:26:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10471 states to 10471 states and 15043 transitions. [2022-07-20 02:26:07,392 INFO L78 Accepts]: Start accepts. Automaton has 10471 states and 15043 transitions. Word has length 342 [2022-07-20 02:26:07,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:26:07,393 INFO L495 AbstractCegarLoop]: Abstraction has 10471 states and 15043 transitions. [2022-07-20 02:26:07,393 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) [2022-07-20 02:26:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand 10471 states and 15043 transitions. [2022-07-20 02:26:07,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2022-07-20 02:26:07,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:26:07,401 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] [2022-07-20 02:26:07,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-20 02:26:07,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:26:07,613 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)] === [2022-07-20 02:26:07,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:26:07,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2102549727, now seen corresponding path program 1 times [2022-07-20 02:26:07,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:26:07,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604764693] [2022-07-20 02:26:07,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:26:07,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:26:07,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:26:07,624 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) [2022-07-20 02:26:07,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-20 02:26:08,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:26:08,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 2077 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 02:26:08,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:26:08,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1745 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2022-07-20 02:26:08,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:26:08,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:26:08,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604764693] [2022-07-20 02:26:08,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604764693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:26:08,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:26:08,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 02:26:08,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376331533] [2022-07-20 02:26:08,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:26:08,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 02:26:08,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:26:08,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 02:26:08,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 02:26:08,801 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) [2022-07-20 02:26:09,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:26:09,466 INFO L93 Difference]: Finished difference Result 22509 states and 32337 transitions. [2022-07-20 02:26:09,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 02:26:09,466 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 [2022-07-20 02:26:09,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:26:09,520 INFO L225 Difference]: With dead ends: 22509 [2022-07-20 02:26:09,520 INFO L226 Difference]: Without dead ends: 13446 [2022-07-20 02:26:09,548 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 [2022-07-20 02:26:09,549 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 [2022-07-20 02:26:09,549 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] [2022-07-20 02:26:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13446 states. [2022-07-20 02:26:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13446 to 13442. [2022-07-20 02:26:10,201 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) [2022-07-20 02:26:10,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13442 states to 13442 states and 19317 transitions. [2022-07-20 02:26:10,244 INFO L78 Accepts]: Start accepts. Automaton has 13442 states and 19317 transitions. Word has length 342 [2022-07-20 02:26:10,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:26:10,244 INFO L495 AbstractCegarLoop]: Abstraction has 13442 states and 19317 transitions. [2022-07-20 02:26:10,244 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) [2022-07-20 02:26:10,244 INFO L276 IsEmpty]: Start isEmpty. Operand 13442 states and 19317 transitions. [2022-07-20 02:26:10,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-07-20 02:26:10,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:26:10,256 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] [2022-07-20 02:26:10,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-07-20 02:26:10,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:26:10,484 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)] === [2022-07-20 02:26:10,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:26:10,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1034647165, now seen corresponding path program 1 times [2022-07-20 02:26:10,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:26:10,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [22750850] [2022-07-20 02:26:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:26:10,485 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:26:10,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:26:10,487 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) [2022-07-20 02:26:10,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-20 02:26:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:26:11,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 2107 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 02:26:11,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:26:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1876 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 1789 trivial. 0 not checked. [2022-07-20 02:26:11,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:26:11,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:26:11,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [22750850] [2022-07-20 02:26:11,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [22750850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:26:11,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:26:11,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 02:26:11,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668877713] [2022-07-20 02:26:11,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:26:11,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 02:26:11,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:26:11,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 02:26:11,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 02:26:11,693 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) [2022-07-20 02:26:12,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:26:12,602 INFO L93 Difference]: Finished difference Result 31264 states and 44935 transitions. [2022-07-20 02:26:12,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 02:26:12,602 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 [2022-07-20 02:26:12,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:26:12,697 INFO L225 Difference]: With dead ends: 31264 [2022-07-20 02:26:12,697 INFO L226 Difference]: Without dead ends: 19230 [2022-07-20 02:26:12,748 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 [2022-07-20 02:26:12,749 INFO L413 NwaCegarLoop]: 4454 mSDtfsCounter, 2107 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2107 SdHoareTripleChecker+Valid, 6782 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 02:26:12,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2107 Valid, 6782 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 02:26:12,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19230 states. [2022-07-20 02:26:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19230 to 19224. [2022-07-20 02:26:13,537 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) [2022-07-20 02:26:13,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19224 states to 19224 states and 27631 transitions. [2022-07-20 02:26:13,595 INFO L78 Accepts]: Start accepts. Automaton has 19224 states and 27631 transitions. Word has length 364 [2022-07-20 02:26:13,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:26:13,595 INFO L495 AbstractCegarLoop]: Abstraction has 19224 states and 27631 transitions. [2022-07-20 02:26:13,596 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) [2022-07-20 02:26:13,596 INFO L276 IsEmpty]: Start isEmpty. Operand 19224 states and 27631 transitions. [2022-07-20 02:26:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-07-20 02:26:13,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:26:13,611 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] [2022-07-20 02:26:13,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-20 02:26:13,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:26:13,847 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)] === [2022-07-20 02:26:13,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:26:13,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1515053959, now seen corresponding path program 1 times [2022-07-20 02:26:13,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:26:13,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921339037] [2022-07-20 02:26:13,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:26:13,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:26:13,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:26:13,850 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) [2022-07-20 02:26:13,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-20 02:26:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:26:14,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 2143 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:26:14,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:26:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-20 02:26:14,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:26:14,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:26:14,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921339037] [2022-07-20 02:26:14,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921339037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:26:14,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:26:14,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 02:26:14,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711971230] [2022-07-20 02:26:14,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:26:14,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:26:14,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:26:14,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:26:14,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 02:26:14,957 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) [2022-07-20 02:26:16,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:26:16,203 INFO L93 Difference]: Finished difference Result 42636 states and 61271 transitions. [2022-07-20 02:26:16,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 02:26:16,204 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 [2022-07-20 02:26:16,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:26:16,278 INFO L225 Difference]: With dead ends: 42636 [2022-07-20 02:26:16,278 INFO L226 Difference]: Without dead ends: 24820 [2022-07-20 02:26:16,318 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 [2022-07-20 02:26:16,319 INFO L413 NwaCegarLoop]: 4453 mSDtfsCounter, 2033 mSDsluCounter, 11211 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 15664 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 02:26:16,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 15664 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 02:26:16,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24820 states. [2022-07-20 02:26:17,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24820 to 24806. [2022-07-20 02:26:17,188 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) [2022-07-20 02:26:17,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24806 states to 24806 states and 35657 transitions. [2022-07-20 02:26:17,270 INFO L78 Accepts]: Start accepts. Automaton has 24806 states and 35657 transitions. Word has length 389 [2022-07-20 02:26:17,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:26:17,271 INFO L495 AbstractCegarLoop]: Abstraction has 24806 states and 35657 transitions. [2022-07-20 02:26:17,271 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) [2022-07-20 02:26:17,271 INFO L276 IsEmpty]: Start isEmpty. Operand 24806 states and 35657 transitions. [2022-07-20 02:26:17,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-07-20 02:26:17,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:26:17,287 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] [2022-07-20 02:26:17,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-20 02:26:17,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:26:17,500 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)] === [2022-07-20 02:26:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:26:17,500 INFO L85 PathProgramCache]: Analyzing trace with hash 291617498, now seen corresponding path program 1 times [2022-07-20 02:26:17,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:26:17,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832055778] [2022-07-20 02:26:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:26:17,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:26:17,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:26:17,503 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) [2022-07-20 02:26:17,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-20 02:26:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:26:18,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 2144 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:26:18,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:26:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-20 02:26:18,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:26:18,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:26:18,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832055778] [2022-07-20 02:26:18,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832055778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:26:18,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:26:18,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 02:26:18,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189853292] [2022-07-20 02:26:18,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:26:18,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:26:18,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:26:18,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:26:18,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 02:26:18,771 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) [2022-07-20 02:26:20,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:26:20,107 INFO L93 Difference]: Finished difference Result 53808 states and 77339 transitions. [2022-07-20 02:26:20,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 02:26:20,109 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 [2022-07-20 02:26:20,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:26:20,246 INFO L225 Difference]: With dead ends: 53808 [2022-07-20 02:26:20,246 INFO L226 Difference]: Without dead ends: 30410 [2022-07-20 02:26:20,323 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 [2022-07-20 02:26:20,323 INFO L413 NwaCegarLoop]: 4457 mSDtfsCounter, 2035 mSDsluCounter, 11217 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2035 SdHoareTripleChecker+Valid, 15674 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 02:26:20,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2035 Valid, 15674 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 02:26:20,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30410 states. [2022-07-20 02:26:21,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30410 to 30396. [2022-07-20 02:26:21,622 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) [2022-07-20 02:26:21,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30396 states to 30396 states and 43691 transitions. [2022-07-20 02:26:21,738 INFO L78 Accepts]: Start accepts. Automaton has 30396 states and 43691 transitions. Word has length 390 [2022-07-20 02:26:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:26:21,739 INFO L495 AbstractCegarLoop]: Abstraction has 30396 states and 43691 transitions. [2022-07-20 02:26:21,739 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) [2022-07-20 02:26:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 30396 states and 43691 transitions. [2022-07-20 02:26:21,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-07-20 02:26:21,760 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:26:21,761 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] [2022-07-20 02:26:21,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-20 02:26:21,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:26:21,980 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)] === [2022-07-20 02:26:21,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:26:21,981 INFO L85 PathProgramCache]: Analyzing trace with hash -419574428, now seen corresponding path program 1 times [2022-07-20 02:26:21,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:26:21,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140857657] [2022-07-20 02:26:21,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:26:21,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:26:21,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:26:21,984 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) [2022-07-20 02:26:21,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-20 02:26:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:26:23,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 2145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:26:23,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:26:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-20 02:26:23,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:26:23,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:26:23,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140857657] [2022-07-20 02:26:23,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140857657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:26:23,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:26:23,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 02:26:23,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199274169] [2022-07-20 02:26:23,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:26:23,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:26:23,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:26:23,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:26:23,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 02:26:23,165 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) [2022-07-20 02:26:25,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:26:25,197 INFO L93 Difference]: Finished difference Result 65000 states and 93431 transitions. [2022-07-20 02:26:25,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 02:26:25,197 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 [2022-07-20 02:26:25,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:26:25,335 INFO L225 Difference]: With dead ends: 65000 [2022-07-20 02:26:25,335 INFO L226 Difference]: Without dead ends: 36012 [2022-07-20 02:26:25,412 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 [2022-07-20 02:26:25,413 INFO L413 NwaCegarLoop]: 4456 mSDtfsCounter, 2046 mSDsluCounter, 11204 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 15660 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 02:26:25,413 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] [2022-07-20 02:26:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36012 states. [2022-07-20 02:26:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36012 to 35998. [2022-07-20 02:26:26,826 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) [2022-07-20 02:26:26,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35998 states to 35998 states and 51737 transitions. [2022-07-20 02:26:26,947 INFO L78 Accepts]: Start accepts. Automaton has 35998 states and 51737 transitions. Word has length 391 [2022-07-20 02:26:26,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:26:26,947 INFO L495 AbstractCegarLoop]: Abstraction has 35998 states and 51737 transitions. [2022-07-20 02:26:26,947 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) [2022-07-20 02:26:26,948 INFO L276 IsEmpty]: Start isEmpty. Operand 35998 states and 51737 transitions. [2022-07-20 02:26:26,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-07-20 02:26:26,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:26:26,967 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] [2022-07-20 02:26:27,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-20 02:26:27,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:26:27,196 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)] === [2022-07-20 02:26:27,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:26:27,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1863912343, now seen corresponding path program 1 times [2022-07-20 02:26:27,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:26:27,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468689399] [2022-07-20 02:26:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:26:27,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:26:27,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:26:27,384 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) [2022-07-20 02:26:27,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-20 02:26:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:26:28,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:26:28,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:26:28,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-20 02:26:28,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:26:28,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:26:28,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468689399] [2022-07-20 02:26:28,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468689399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:26:28,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:26:28,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 02:26:28,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953368620] [2022-07-20 02:26:28,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:26:28,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:26:28,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:26:28,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:26:28,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 02:26:28,773 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) [2022-07-20 02:26:30,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:26:30,752 INFO L93 Difference]: Finished difference Result 76208 states and 109531 transitions. [2022-07-20 02:26:30,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 02:26:30,752 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 [2022-07-20 02:26:30,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:26:30,877 INFO L225 Difference]: With dead ends: 76208 [2022-07-20 02:26:30,877 INFO L226 Difference]: Without dead ends: 41618 [2022-07-20 02:26:30,946 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 [2022-07-20 02:26:30,947 INFO L413 NwaCegarLoop]: 4456 mSDtfsCounter, 2037 mSDsluCounter, 11213 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 15669 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-20 02:26:30,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 15669 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-20 02:26:30,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41618 states. [2022-07-20 02:26:32,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41618 to 41604. [2022-07-20 02:26:32,722 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) [2022-07-20 02:26:32,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41604 states to 41604 states and 59787 transitions. [2022-07-20 02:26:32,850 INFO L78 Accepts]: Start accepts. Automaton has 41604 states and 59787 transitions. Word has length 392 [2022-07-20 02:26:32,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:26:32,851 INFO L495 AbstractCegarLoop]: Abstraction has 41604 states and 59787 transitions. [2022-07-20 02:26:32,851 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) [2022-07-20 02:26:32,851 INFO L276 IsEmpty]: Start isEmpty. Operand 41604 states and 59787 transitions. [2022-07-20 02:26:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2022-07-20 02:26:32,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:26:32,872 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] [2022-07-20 02:26:32,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-07-20 02:26:33,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:26:33,091 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)] === [2022-07-20 02:26:33,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:26:33,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1801809087, now seen corresponding path program 1 times [2022-07-20 02:26:33,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:26:33,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039353640] [2022-07-20 02:26:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:26:33,092 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:26:33,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:26:33,094 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) [2022-07-20 02:26:33,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-20 02:26:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:26:34,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 2147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:26:34,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:26:34,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-20 02:26:34,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:26:34,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:26:34,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039353640] [2022-07-20 02:26:34,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039353640] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:26:34,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:26:34,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 02:26:34,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452375674] [2022-07-20 02:26:34,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:26:34,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:26:34,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:26:34,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:26:34,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 02:26:34,437 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) [2022-07-20 02:26:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:26:36,855 INFO L93 Difference]: Finished difference Result 87424 states and 125639 transitions. [2022-07-20 02:26:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 02:26:36,855 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 [2022-07-20 02:26:36,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:26:37,060 INFO L225 Difference]: With dead ends: 87424 [2022-07-20 02:26:37,061 INFO L226 Difference]: Without dead ends: 47228 [2022-07-20 02:26:37,157 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 [2022-07-20 02:26:37,157 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 [2022-07-20 02:26:37,161 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] [2022-07-20 02:26:37,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47228 states. [2022-07-20 02:26:39,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47228 to 47214. [2022-07-20 02:26:39,266 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) [2022-07-20 02:26:39,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47214 states to 47214 states and 67841 transitions. [2022-07-20 02:26:39,467 INFO L78 Accepts]: Start accepts. Automaton has 47214 states and 67841 transitions. Word has length 393 [2022-07-20 02:26:39,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:26:39,468 INFO L495 AbstractCegarLoop]: Abstraction has 47214 states and 67841 transitions. [2022-07-20 02:26:39,468 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) [2022-07-20 02:26:39,468 INFO L276 IsEmpty]: Start isEmpty. Operand 47214 states and 67841 transitions. [2022-07-20 02:26:39,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2022-07-20 02:26:39,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:26:39,493 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] [2022-07-20 02:26:39,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-20 02:26:39,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:26:39,708 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)] === [2022-07-20 02:26:39,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:26:39,708 INFO L85 PathProgramCache]: Analyzing trace with hash -914423724, now seen corresponding path program 1 times [2022-07-20 02:26:39,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:26:39,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221220520] [2022-07-20 02:26:39,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:26:39,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:26:39,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:26:39,711 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) [2022-07-20 02:26:39,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-20 02:26:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:26:40,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 2148 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:26:40,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:26:40,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-20 02:26:40,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:26:40,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:26:40,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221220520] [2022-07-20 02:26:40,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221220520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:26:40,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:26:40,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 02:26:40,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74257355] [2022-07-20 02:26:40,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:26:40,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:26:40,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:26:40,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:26:40,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 02:26:40,925 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) [2022-07-20 02:26:43,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:26:43,640 INFO L93 Difference]: Finished difference Result 98648 states and 141755 transitions. [2022-07-20 02:26:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 02:26:43,640 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 [2022-07-20 02:26:43,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:26:43,861 INFO L225 Difference]: With dead ends: 98648 [2022-07-20 02:26:43,862 INFO L226 Difference]: Without dead ends: 52842 [2022-07-20 02:26:43,982 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 [2022-07-20 02:26:43,983 INFO L413 NwaCegarLoop]: 4456 mSDtfsCounter, 2035 mSDsluCounter, 11215 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-07-20 02:26:43,983 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] [2022-07-20 02:26:44,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52842 states. [2022-07-20 02:26:46,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52842 to 52828. [2022-07-20 02:26:46,393 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) [2022-07-20 02:26:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52828 states to 52828 states and 75899 transitions. [2022-07-20 02:26:46,610 INFO L78 Accepts]: Start accepts. Automaton has 52828 states and 75899 transitions. Word has length 394 [2022-07-20 02:26:46,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:26:46,611 INFO L495 AbstractCegarLoop]: Abstraction has 52828 states and 75899 transitions. [2022-07-20 02:26:46,612 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) [2022-07-20 02:26:46,612 INFO L276 IsEmpty]: Start isEmpty. Operand 52828 states and 75899 transitions. [2022-07-20 02:26:46,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2022-07-20 02:26:46,636 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:26:46,636 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] [2022-07-20 02:26:46,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-07-20 02:26:46,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:26:46,848 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)] === [2022-07-20 02:26:46,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:26:46,848 INFO L85 PathProgramCache]: Analyzing trace with hash -614648546, now seen corresponding path program 1 times [2022-07-20 02:26:46,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:26:46,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421050342] [2022-07-20 02:26:46,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:26:46,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:26:46,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:26:46,851 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) [2022-07-20 02:26:46,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-20 02:26:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:26:47,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 2149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:26:47,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:26:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-20 02:26:48,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:26:48,018 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:26:48,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421050342] [2022-07-20 02:26:48,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421050342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:26:48,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:26:48,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 02:26:48,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950233818] [2022-07-20 02:26:48,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:26:48,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:26:48,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:26:48,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:26:48,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 02:26:48,019 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) [2022-07-20 02:26:50,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:26:50,988 INFO L93 Difference]: Finished difference Result 109880 states and 157879 transitions. [2022-07-20 02:26:50,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 02:26:50,988 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 [2022-07-20 02:26:50,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:26:51,207 INFO L225 Difference]: With dead ends: 109880 [2022-07-20 02:26:51,207 INFO L226 Difference]: Without dead ends: 58460 [2022-07-20 02:26:51,343 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 [2022-07-20 02:26:51,344 INFO L413 NwaCegarLoop]: 4456 mSDtfsCounter, 2035 mSDsluCounter, 11215 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-07-20 02:26:51,345 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] [2022-07-20 02:26:51,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58460 states. [2022-07-20 02:26:53,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58460 to 58446. [2022-07-20 02:26:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58446 states, 42367 states have (on average 1.3602804069204806) internal successors, (57631), 42386 states have internal predecessors, (57631), 13151 states have call successors, (13151), 2898 states have call predecessors, (13151), 2926 states have return successors, (13179), 13161 states have call predecessors, (13179), 13151 states have call successors, (13179) [2022-07-20 02:26:54,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58446 states to 58446 states and 83961 transitions. [2022-07-20 02:26:54,089 INFO L78 Accepts]: Start accepts. Automaton has 58446 states and 83961 transitions. Word has length 395 [2022-07-20 02:26:54,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 02:26:54,090 INFO L495 AbstractCegarLoop]: Abstraction has 58446 states and 83961 transitions. [2022-07-20 02:26:54,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-20 02:26:54,090 INFO L276 IsEmpty]: Start isEmpty. Operand 58446 states and 83961 transitions. [2022-07-20 02:26:54,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-07-20 02:26:54,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 02:26:54,114 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 17, 17, 17, 17, 17, 17, 7, 7, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 02:26:54,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-20 02:26:54,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 02:26:54,336 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-07-20 02:26:54,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 02:26:54,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1350919919, now seen corresponding path program 1 times [2022-07-20 02:26:54,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 02:26:54,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758961283] [2022-07-20 02:26:54,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 02:26:54,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 02:26:54,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 02:26:54,339 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 02:26:54,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-20 02:26:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 02:26:55,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 2150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-20 02:26:55,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 02:26:55,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2050 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 1951 trivial. 0 not checked. [2022-07-20 02:26:55,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 02:26:55,518 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 02:26:55,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758961283] [2022-07-20 02:26:55,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758961283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 02:26:55,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 02:26:55,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 02:26:55,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524950426] [2022-07-20 02:26:55,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 02:26:55,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 02:26:55,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 02:26:55,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 02:26:55,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 02:26:55,519 INFO L87 Difference]: Start difference. First operand 58446 states and 83961 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-20 02:26:58,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 02:26:58,600 INFO L93 Difference]: Finished difference Result 121120 states and 174011 transitions. [2022-07-20 02:26:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 02:26:58,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 4 states have internal predecessors, (125), 3 states have call successors, (37), 3 states have call predecessors, (37), 4 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 396 [2022-07-20 02:26:58,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 02:26:58,874 INFO L225 Difference]: With dead ends: 121120 [2022-07-20 02:26:58,874 INFO L226 Difference]: Without dead ends: 64082