./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7 --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash eed79abab256f81f1863cfddb0c42a9b6564cf98ca16b371152af6fd281f627c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:02:12,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:02:12,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:02:12,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:02:12,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:02:12,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:02:12,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:02:12,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:02:12,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:02:12,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:02:12,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:02:12,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:02:12,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:02:12,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:02:12,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:02:12,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:02:12,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:02:12,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:02:12,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:02:12,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:02:12,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:02:12,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:02:12,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:02:12,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:02:12,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:02:12,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:02:12,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:02:12,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:02:12,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:02:12,816 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:02:12,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:02:12,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:02:12,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:02:12,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:02:12,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:02:12,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:02:12,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:02:12,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:02:12,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:02:12,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:02:12,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:02:12,828 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 20:02:12,871 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:02:12,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:02:12,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:02:12,873 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:02:12,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:02:12,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:02:12,880 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:02:12,880 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:02:12,881 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:02:12,881 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:02:12,882 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:02:12,882 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:02:12,882 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:02:12,882 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:02:12,883 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:02:12,883 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:02:12,883 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:02:12,883 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:02:12,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:02:12,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:02:12,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:02:12,885 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:02:12,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:02:12,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:02:12,886 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:02:12,886 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:02:12,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:02:12,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:02:12,888 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:02:12,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:02:12,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:02:12,889 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:02:12,889 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:02:12,889 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:02:12,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:02:12,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:02:12,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:02:12,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:02:12,890 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eed79abab256f81f1863cfddb0c42a9b6564cf98ca16b371152af6fd281f627c [2021-11-25 20:02:13,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:02:13,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:02:13,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:02:13,164 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:02:13,167 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:02:13,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-25 20:02:13,235 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7/data/bab837e71/a5cff68df00f4b2ab74ad0667dde0519/FLAGc000231ad [2021-11-25 20:02:14,272 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:02:14,272 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-25 20:02:14,342 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7/data/bab837e71/a5cff68df00f4b2ab74ad0667dde0519/FLAGc000231ad [2021-11-25 20:02:14,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7/data/bab837e71/a5cff68df00f4b2ab74ad0667dde0519 [2021-11-25 20:02:14,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:02:14,580 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:02:14,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:02:14,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:02:14,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:02:14,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:02:14" (1/1) ... [2021-11-25 20:02:14,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57bde1af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:02:14, skipping insertion in model container [2021-11-25 20:02:14,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:02:14" (1/1) ... [2021-11-25 20:02:14,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:02:14,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:02:19,309 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[462950,462963] [2021-11-25 20:02:19,312 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463119,463132] [2021-11-25 20:02:19,313 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463286,463299] [2021-11-25 20:02:19,318 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463454,463467] [2021-11-25 20:02:19,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:02:19,430 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:02:20,005 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[462950,462963] [2021-11-25 20:02:20,006 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463119,463132] [2021-11-25 20:02:20,006 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463286,463299] [2021-11-25 20:02:20,007 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i[463454,463467] [2021-11-25 20:02:20,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:02:20,492 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:02:20,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:02:20 WrapperNode [2021-11-25 20:02:20,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:02:20,502 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:02:20,502 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:02:20,502 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:02:20,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:02:20" (1/1) ... [2021-11-25 20:02:20,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:02:20" (1/1) ... [2021-11-25 20:02:20,965 INFO L137 Inliner]: procedures = 566, calls = 4373, calls flagged for inlining = 270, calls inlined = 248, statements flattened = 8973 [2021-11-25 20:02:20,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:02:20,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:02:20,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:02:20,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:02:20,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:02:20" (1/1) ... [2021-11-25 20:02:20,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:02:20" (1/1) ... [2021-11-25 20:02:21,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:02:20" (1/1) ... [2021-11-25 20:02:21,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:02:20" (1/1) ... [2021-11-25 20:02:21,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:02:20" (1/1) ... [2021-11-25 20:02:21,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:02:20" (1/1) ... [2021-11-25 20:02:21,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:02:20" (1/1) ... [2021-11-25 20:02:21,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:02:21,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:02:21,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:02:21,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:02:21,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:02:20" (1/1) ... [2021-11-25 20:02:21,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:02:21,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:02:21,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:02:21,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e89a6ed-076b-4122-98ee-41666c5bbada/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:02:21,548 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-25 20:02:21,548 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-25 20:02:21,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 20:02:21,549 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 20:02:21,549 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_alloc_skb [2021-11-25 20:02:21,549 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_alloc_skb [2021-11-25 20:02:21,549 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2021-11-25 20:02:21,549 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2021-11-25 20:02:21,549 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_nway_reset [2021-11-25 20:02:21,550 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_nway_reset [2021-11-25 20:02:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-25 20:02:21,550 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-25 20:02:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_87 [2021-11-25 20:02:21,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_87 [2021-11-25 20:02:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 20:02:21,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 20:02:21,551 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 20:02:21,551 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 20:02:21,551 INFO L130 BoogieDeclarations]: Found specification of procedure set_8021q_mode [2021-11-25 20:02:21,551 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8021q_mode [2021-11-25 20:02:21,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irq_82 [2021-11-25 20:02:21,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irq_82 [2021-11-25 20:02:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_remove_one [2021-11-25 20:02:21,552 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_remove_one [2021-11-25 20:02:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 20:02:21,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 20:02:21,552 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-25 20:02:21,553 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-25 20:02:21,553 INFO L130 BoogieDeclarations]: Found specification of procedure issue_and_wait [2021-11-25 20:02:21,553 INFO L138 BoogieDeclarations]: Found implementation of procedure issue_and_wait [2021-11-25 20:02:21,553 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-25 20:02:21,554 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-25 20:02:21,554 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-25 20:02:21,554 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-25 20:02:21,554 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-25 20:02:21,554 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-25 20:02:21,554 INFO L130 BoogieDeclarations]: Found specification of procedure window_write32 [2021-11-25 20:02:21,555 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write32 [2021-11-25 20:02:21,555 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-25 20:02:21,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-25 20:02:21,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_65 [2021-11-25 20:02:21,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_65 [2021-11-25 20:02:21,556 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 20:02:21,557 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 20:02:21,557 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 20:02:21,557 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 20:02:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_window_lock_of_vortex_private [2021-11-25 20:02:21,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_window_lock_of_vortex_private [2021-11-25 20:02:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_lock_of_vortex_private [2021-11-25 20:02:21,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_lock_of_vortex_private [2021-11-25 20:02:21,558 INFO L130 BoogieDeclarations]: Found specification of procedure window_set [2021-11-25 20:02:21,559 INFO L138 BoogieDeclarations]: Found implementation of procedure window_set [2021-11-25 20:02:21,559 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 20:02:21,559 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 20:02:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 20:02:21,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 20:02:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 20:02:21,560 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 20:02:21,560 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-25 20:02:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-25 20:02:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2021-11-25 20:02:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2021-11-25 20:02:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-25 20:02:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-25 20:02:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-25 20:02:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-25 20:02:21,562 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 20:02:21,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 20:02:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure arch_irqs_disabled_flags [2021-11-25 20:02:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_irqs_disabled_flags [2021-11-25 20:02:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 20:02:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 20:02:21,563 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-25 20:02:21,563 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-25 20:02:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:02:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tx_timestamp [2021-11-25 20:02:21,564 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tx_timestamp [2021-11-25 20:02:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer_sync [2021-11-25 20:02:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer_sync [2021-11-25 20:02:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-25 20:02:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-25 20:02:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-25 20:02:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-25 20:02:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 20:02:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_tx_timeout [2021-11-25 20:02:21,567 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_tx_timeout [2021-11-25 20:02:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2021-11-25 20:02:21,567 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2021-11-25 20:02:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure ioport_map [2021-11-25 20:02:21,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ioport_map [2021-11-25 20:02:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-25 20:02:21,568 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-25 20:02:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev [2021-11-25 20:02:21,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev [2021-11-25 20:02:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 20:02:21,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 20:02:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 20:02:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 20:02:21,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 20:02:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:02:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_interrupt [2021-11-25 20:02:21,570 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_interrupt [2021-11-25 20:02:21,570 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-25 20:02:21,570 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-25 20:02:21,571 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-25 20:02:21,571 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-25 20:02:21,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 20:02:21,574 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 20:02:21,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 20:02:21,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 20:02:21,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 20:02:21,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 20:02:21,575 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 20:02:21,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 20:02:21,576 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_set_duplex [2021-11-25 20:02:21,583 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_set_duplex [2021-11-25 20:02:21,583 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2021-11-25 20:02:21,584 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2021-11-25 20:02:21,584 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2021-11-25 20:02:21,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2021-11-25 20:02:21,584 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-25 20:02:21,584 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-25 20:02:21,584 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_error [2021-11-25 20:02:21,584 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_error [2021-11-25 20:02:21,584 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 20:02:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 20:02:21,585 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_close [2021-11-25 20:02:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_close [2021-11-25 20:02:21,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 20:02:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 20:02:21,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:02:21,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 20:02:21,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 20:02:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_save [2021-11-25 20:02:21,586 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_save [2021-11-25 20:02:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 20:02:21,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 20:02:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 20:02:21,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 20:02:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_4 [2021-11-25 20:02:21,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_4 [2021-11-25 20:02:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 20:02:21,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 20:02:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:02:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 20:02:21,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 20:02:21,588 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-25 20:02:21,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-25 20:02:21,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 20:02:21,588 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-25 20:02:21,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-25 20:02:21,588 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:02:21,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 20:02:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-25 20:02:21,589 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-25 20:02:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:02:21,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 20:02:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_set_WOL [2021-11-25 20:02:21,589 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_set_WOL [2021-11-25 20:02:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 20:02:21,590 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 20:02:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure window_write16 [2021-11-25 20:02:21,590 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write16 [2021-11-25 20:02:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-25 20:02:21,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-25 20:02:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:02:21,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~dma_addr_t~0~X~int~X~int~TO~VOID [2021-11-25 20:02:21,591 INFO L130 BoogieDeclarations]: Found specification of procedure window_read8 [2021-11-25 20:02:21,591 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read8 [2021-11-25 20:02:21,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_vortex_cleanup_16_2 [2021-11-25 20:02:21,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_vortex_cleanup_16_2 [2021-11-25 20:02:21,591 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 20:02:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 20:02:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure update_stats [2021-11-25 20:02:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure update_stats [2021-11-25 20:02:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-25 20:02:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-25 20:02:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 20:02:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 20:02:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure poll_vortex [2021-11-25 20:02:21,593 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_vortex [2021-11-25 20:02:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev [2021-11-25 20:02:21,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev [2021-11-25 20:02:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_window_lock_of_vortex_private [2021-11-25 20:02:21,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_window_lock_of_vortex_private [2021-11-25 20:02:21,593 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_check_media [2021-11-25 20:02:21,594 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_check_media [2021-11-25 20:02:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-25 20:02:21,594 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-25 20:02:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_rx [2021-11-25 20:02:21,594 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_rx [2021-11-25 20:02:21,594 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_save_flags [2021-11-25 20:02:21,595 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_save_flags [2021-11-25 20:02:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_open [2021-11-25 20:02:21,595 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_open [2021-11-25 20:02:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure dump_tx_ring [2021-11-25 20:02:21,595 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_tx_ring [2021-11-25 20:02:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-25 20:02:21,596 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-25 20:02:21,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:02:21,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:02:21,596 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_probe1 [2021-11-25 20:02:21,596 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_probe1 [2021-11-25 20:02:21,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 20:02:21,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 20:02:21,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 20:02:21,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 20:02:21,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 20:02:21,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 20:02:21,597 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 20:02:21,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 20:02:21,597 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_on [2021-11-25 20:02:21,598 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_on [2021-11-25 20:02:21,598 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-25 20:02:21,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-25 20:02:21,598 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-25 20:02:21,598 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-25 20:02:21,598 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_post_probe [2021-11-25 20:02:21,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_post_probe [2021-11-25 20:02:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-11-25 20:02:21,599 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-11-25 20:02:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-11-25 20:02:21,599 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-11-25 20:02:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:02:21,599 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-25 20:02:21,599 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-25 20:02:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-25 20:02:21,600 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-25 20:02:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 20:02:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_suspend [2021-11-25 20:02:21,600 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_suspend [2021-11-25 20:02:21,600 INFO L130 BoogieDeclarations]: Found specification of procedure boomerang_interrupt [2021-11-25 20:02:21,600 INFO L138 BoogieDeclarations]: Found implementation of procedure boomerang_interrupt [2021-11-25 20:02:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_irq_81 [2021-11-25 20:02:21,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_irq_81 [2021-11-25 20:02:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 20:02:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 20:02:21,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~structbegin~int~structend~~TO~int [2021-11-25 20:02:21,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_pre_probe [2021-11-25 20:02:21,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_pre_probe [2021-11-25 20:02:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-25 20:02:21,602 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-25 20:02:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 20:02:21,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 20:02:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 20:02:21,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 20:02:21,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_108 [2021-11-25 20:02:21,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_108 [2021-11-25 20:02:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-25 20:02:21,603 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-25 20:02:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_sync [2021-11-25 20:02:21,603 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_sync [2021-11-25 20:02:21,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_89 [2021-11-25 20:02:21,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_89 [2021-11-25 20:02:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_88 [2021-11-25 20:02:21,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_88 [2021-11-25 20:02:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_resume [2021-11-25 20:02:21,604 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_resume [2021-11-25 20:02:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure pci_restore_state [2021-11-25 20:02:21,604 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_restore_state [2021-11-25 20:02:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-25 20:02:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-25 20:02:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_rx [2021-11-25 20:02:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_rx [2021-11-25 20:02:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-11-25 20:02:21,605 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-11-25 20:02:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-25 20:02:21,606 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-25 20:02:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-25 20:02:21,606 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-25 20:02:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 20:02:21,606 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 20:02:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_delay [2021-11-25 20:02:21,606 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_delay [2021-11-25 20:02:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:02:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_down [2021-11-25 20:02:21,607 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_down [2021-11-25 20:02:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-25 20:02:21,607 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-25 20:02:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-25 20:02:21,607 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-25 20:02:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 20:02:21,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 20:02:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure window_write8 [2021-11-25 20:02:21,608 INFO L138 BoogieDeclarations]: Found implementation of procedure window_write8 [2021-11-25 20:02:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure window_read32 [2021-11-25 20:02:21,608 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read32 [2021-11-25 20:02:21,608 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 20:02:21,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~$Pointer$~TO~int [2021-11-25 20:02:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_109 [2021-11-25 20:02:21,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_109 [2021-11-25 20:02:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_94 [2021-11-25 20:02:21,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_94 [2021-11-25 20:02:21,609 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32_rep [2021-11-25 20:02:21,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32_rep [2021-11-25 20:02:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_90 [2021-11-25 20:02:21,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_90 [2021-11-25 20:02:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 20:02:21,610 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 20:02:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure vortex_up [2021-11-25 20:02:21,610 INFO L138 BoogieDeclarations]: Found implementation of procedure vortex_up [2021-11-25 20:02:21,610 INFO L130 BoogieDeclarations]: Found specification of procedure window_read16 [2021-11-25 20:02:21,611 INFO L138 BoogieDeclarations]: Found implementation of procedure window_read16 [2021-11-25 20:02:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 20:02:21,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 20:02:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 20:02:21,611 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 20:02:21,611 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-25 20:02:21,611 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-25 20:02:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 20:02:21,612 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 20:02:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_lock_of_vortex_private [2021-11-25 20:02:21,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_lock_of_vortex_private [2021-11-25 20:02:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-25 20:02:21,612 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-25 20:02:21,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:02:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 20:02:21,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 20:02:21,613 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2021-11-25 20:02:21,613 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2021-11-25 20:02:22,784 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:02:22,788 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:02:24,576 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 20:02:30,797 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 20:02:30,899 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:02:33,785 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:02:33,786 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 20:02:33,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:02:33 BoogieIcfgContainer [2021-11-25 20:02:33,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:02:33,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:02:33,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:02:33,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:02:33,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:02:14" (1/3) ... [2021-11-25 20:02:33,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f52ae0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:02:33, skipping insertion in model container [2021-11-25 20:02:33,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:02:20" (2/3) ... [2021-11-25 20:02:33,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f52ae0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:02:33, skipping insertion in model container [2021-11-25 20:02:33,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:02:33" (3/3) ... [2021-11-25 20:02:33,804 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-ethernet-3com-3c59x.cil.i [2021-11-25 20:02:33,809 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:02:33,809 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 20:02:33,867 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:02:33,873 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:02:33,874 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 20:02:33,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 2282 states, 1327 states have (on average 1.333835719668425) internal successors, (1770), 1398 states have internal predecessors, (1770), 801 states have call successors, (801), 152 states have call predecessors, (801), 151 states have return successors, (792), 777 states have call predecessors, (792), 792 states have call successors, (792) [2021-11-25 20:02:33,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-25 20:02:33,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:02:33,980 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 20:02:33,980 INFO L402 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)] === [2021-11-25 20:02:33,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:02:33,986 INFO L85 PathProgramCache]: Analyzing trace with hash 421145606, now seen corresponding path program 1 times [2021-11-25 20:02:33,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:02:33,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020524849] [2021-11-25 20:02:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:02:33,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:02:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:02:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-25 20:02:35,136 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:02:35,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020524849] [2021-11-25 20:02:35,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020524849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:02:35,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:02:35,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:02:35,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917979954] [2021-11-25 20:02:35,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:02:35,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:02:35,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:02:35,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:02:35,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:02:35,222 INFO L87 Difference]: Start difference. First operand has 2282 states, 1327 states have (on average 1.333835719668425) internal successors, (1770), 1398 states have internal predecessors, (1770), 801 states have call successors, (801), 152 states have call predecessors, (801), 151 states have return successors, (792), 777 states have call predecessors, (792), 792 states have call successors, (792) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 20:02:37,497 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:40,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:42,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:44,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:02:44,371 INFO L93 Difference]: Finished difference Result 6567 states and 10061 transitions. [2021-11-25 20:02:44,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:02:44,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 192 [2021-11-25 20:02:44,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:02:44,440 INFO L225 Difference]: With dead ends: 6567 [2021-11-25 20:02:44,441 INFO L226 Difference]: Without dead ends: 4307 [2021-11-25 20:02:44,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:02:44,475 INFO L933 BasicCegarLoop]: 3616 mSDtfsCounter, 3025 mSDsluCounter, 3299 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3027 SdHoareTripleChecker+Valid, 6471 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:02:44,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3027 Valid, 6471 Invalid, 938 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 929 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2021-11-25 20:02:44,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4307 states. [2021-11-25 20:02:44,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4307 to 4301. [2021-11-25 20:02:44,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4301 states, 2517 states have (on average 1.3289630512514898) internal successors, (3345), 2654 states have internal predecessors, (3345), 1483 states have call successors, (1483), 299 states have call predecessors, (1483), 298 states have return successors, (1481), 1449 states have call predecessors, (1481), 1479 states have call successors, (1481) [2021-11-25 20:02:44,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4301 states to 4301 states and 6309 transitions. [2021-11-25 20:02:44,999 INFO L78 Accepts]: Start accepts. Automaton has 4301 states and 6309 transitions. Word has length 192 [2021-11-25 20:02:45,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:02:45,004 INFO L470 AbstractCegarLoop]: Abstraction has 4301 states and 6309 transitions. [2021-11-25 20:02:45,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 20:02:45,006 INFO L276 IsEmpty]: Start isEmpty. Operand 4301 states and 6309 transitions. [2021-11-25 20:02:45,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-25 20:02:45,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:02:45,022 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 20:02:45,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:02:45,023 INFO L402 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)] === [2021-11-25 20:02:45,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:02:45,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1611409990, now seen corresponding path program 1 times [2021-11-25 20:02:45,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:02:45,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453319959] [2021-11-25 20:02:45,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:02:45,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:02:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:02:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-25 20:02:45,672 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:02:45,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453319959] [2021-11-25 20:02:45,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453319959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:02:45,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:02:45,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:02:45,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308318690] [2021-11-25 20:02:45,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:02:45,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:02:45,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:02:45,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:02:45,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:02:45,682 INFO L87 Difference]: Start difference. First operand 4301 states and 6309 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 20:02:48,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:50,270 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:52,284 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:02:54,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:02:54,926 INFO L93 Difference]: Finished difference Result 12388 states and 18250 transitions. [2021-11-25 20:02:54,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:02:54,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 200 [2021-11-25 20:02:54,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:02:55,009 INFO L225 Difference]: With dead ends: 12388 [2021-11-25 20:02:55,010 INFO L226 Difference]: Without dead ends: 8122 [2021-11-25 20:02:55,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:02:55,036 INFO L933 BasicCegarLoop]: 3631 mSDtfsCounter, 2936 mSDsluCounter, 3277 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2938 SdHoareTripleChecker+Valid, 6461 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:02:55,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2938 Valid, 6461 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 914 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2021-11-25 20:02:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8122 states. [2021-11-25 20:02:55,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8122 to 8089. [2021-11-25 20:02:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8089 states, 4744 states have (on average 1.3288364249578415) internal successors, (6304), 5002 states have internal predecessors, (6304), 2764 states have call successors, (2764), 583 states have call predecessors, (2764), 578 states have return successors, (2880), 2685 states have call predecessors, (2880), 2760 states have call successors, (2880) [2021-11-25 20:02:55,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8089 states to 8089 states and 11948 transitions. [2021-11-25 20:02:55,581 INFO L78 Accepts]: Start accepts. Automaton has 8089 states and 11948 transitions. Word has length 200 [2021-11-25 20:02:55,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:02:55,582 INFO L470 AbstractCegarLoop]: Abstraction has 8089 states and 11948 transitions. [2021-11-25 20:02:55,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-11-25 20:02:55,584 INFO L276 IsEmpty]: Start isEmpty. Operand 8089 states and 11948 transitions. [2021-11-25 20:02:55,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-25 20:02:55,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:02:55,591 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 20:02:55,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:02:55,594 INFO L402 AbstractCegarLoop]: === Iteration 3 === 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)] === [2021-11-25 20:02:55,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:02:55,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1190852295, now seen corresponding path program 1 times [2021-11-25 20:02:55,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:02:55,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101408167] [2021-11-25 20:02:55,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:02:55,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:02:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:02:56,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-25 20:02:56,009 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:02:56,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101408167] [2021-11-25 20:02:56,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101408167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:02:56,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:02:56,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:02:56,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961657004] [2021-11-25 20:02:56,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:02:56,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:02:56,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:02:56,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:02:56,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:02:56,015 INFO L87 Difference]: Start difference. First operand 8089 states and 11948 transitions. 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 20:02:59,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:01,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:04,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:04,467 INFO L93 Difference]: Finished difference Result 19887 states and 29325 transitions. [2021-11-25 20:03:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:04,469 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 209 [2021-11-25 20:03:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:04,572 INFO L225 Difference]: With dead ends: 19887 [2021-11-25 20:03:04,573 INFO L226 Difference]: Without dead ends: 11833 [2021-11-25 20:03:04,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:04,613 INFO L933 BasicCegarLoop]: 3579 mSDtfsCounter, 2898 mSDsluCounter, 3279 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2899 SdHoareTripleChecker+Valid, 6419 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:04,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2899 Valid, 6419 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 961 Invalid, 2 Unknown, 0 Unchecked, 7.8s Time] [2021-11-25 20:03:04,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11833 states. [2021-11-25 20:03:05,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11833 to 11798. [2021-11-25 20:03:05,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11798 states, 6925 states have (on average 1.3220216606498194) internal successors, (9155), 7303 states have internal predecessors, (9155), 3999 states have call successors, (3999), 878 states have call predecessors, (3999), 871 states have return successors, (4170), 3875 states have call predecessors, (4170), 3995 states have call successors, (4170) [2021-11-25 20:03:05,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11798 states to 11798 states and 17324 transitions. [2021-11-25 20:03:05,304 INFO L78 Accepts]: Start accepts. Automaton has 11798 states and 17324 transitions. Word has length 209 [2021-11-25 20:03:05,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:05,305 INFO L470 AbstractCegarLoop]: Abstraction has 11798 states and 17324 transitions. [2021-11-25 20:03:05,306 INFO L471 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, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 20:03:05,306 INFO L276 IsEmpty]: Start isEmpty. Operand 11798 states and 17324 transitions. [2021-11-25 20:03:05,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-25 20:03:05,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:05,312 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-25 20:03:05,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:03:05,313 INFO L402 AbstractCegarLoop]: === Iteration 4 === 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)] === [2021-11-25 20:03:05,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:05,313 INFO L85 PathProgramCache]: Analyzing trace with hash -21630216, now seen corresponding path program 1 times [2021-11-25 20:03:05,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:05,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322867989] [2021-11-25 20:03:05,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:05,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:05,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-25 20:03:05,690 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:05,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322867989] [2021-11-25 20:03:05,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322867989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:05,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:05,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:05,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636997456] [2021-11-25 20:03:05,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:05,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:05,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:05,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:05,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:05,693 INFO L87 Difference]: Start difference. First operand 11798 states and 17324 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 20:03:09,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:10,753 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:12,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:16,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:16,242 INFO L93 Difference]: Finished difference Result 34362 states and 50398 transitions. [2021-11-25 20:03:16,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:16,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 210 [2021-11-25 20:03:16,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:16,408 INFO L225 Difference]: With dead ends: 34362 [2021-11-25 20:03:16,409 INFO L226 Difference]: Without dead ends: 22599 [2021-11-25 20:03:16,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:16,472 INFO L933 BasicCegarLoop]: 4269 mSDtfsCounter, 3067 mSDsluCounter, 3242 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3067 SdHoareTripleChecker+Valid, 7086 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:16,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3067 Valid, 7086 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1108 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2021-11-25 20:03:16,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22599 states. [2021-11-25 20:03:17,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22599 to 22560. [2021-11-25 20:03:17,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22560 states, 13204 states have (on average 1.3131626779763708) internal successors, (17339), 13950 states have internal predecessors, (17339), 7650 states have call successors, (7650), 1716 states have call predecessors, (7650), 1703 states have return successors, (7920), 7403 states have call predecessors, (7920), 7646 states have call successors, (7920) [2021-11-25 20:03:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22560 states to 22560 states and 32909 transitions. [2021-11-25 20:03:18,004 INFO L78 Accepts]: Start accepts. Automaton has 22560 states and 32909 transitions. Word has length 210 [2021-11-25 20:03:18,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:18,006 INFO L470 AbstractCegarLoop]: Abstraction has 22560 states and 32909 transitions. [2021-11-25 20:03:18,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-25 20:03:18,006 INFO L276 IsEmpty]: Start isEmpty. Operand 22560 states and 32909 transitions. [2021-11-25 20:03:18,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-25 20:03:18,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:18,012 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 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] [2021-11-25 20:03:18,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:03:18,013 INFO L402 AbstractCegarLoop]: === Iteration 5 === 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)] === [2021-11-25 20:03:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:18,014 INFO L85 PathProgramCache]: Analyzing trace with hash -9175031, now seen corresponding path program 1 times [2021-11-25 20:03:18,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:18,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577424053] [2021-11-25 20:03:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:18,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2021-11-25 20:03:18,489 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:18,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577424053] [2021-11-25 20:03:18,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577424053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:18,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:18,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:18,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545187504] [2021-11-25 20:03:18,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:18,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:18,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:18,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:18,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:18,492 INFO L87 Difference]: Start difference. First operand 22560 states and 32909 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 20:03:21,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:22,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:23,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:25,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:25,894 INFO L93 Difference]: Finished difference Result 55628 states and 80631 transitions. [2021-11-25 20:03:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:25,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 210 [2021-11-25 20:03:25,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:26,247 INFO L225 Difference]: With dead ends: 55628 [2021-11-25 20:03:26,247 INFO L226 Difference]: Without dead ends: 33103 [2021-11-25 20:03:26,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:26,324 INFO L933 BasicCegarLoop]: 3573 mSDtfsCounter, 2720 mSDsluCounter, 3215 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2720 SdHoareTripleChecker+Valid, 6369 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:26,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2720 Valid, 6369 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 963 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-11-25 20:03:26,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33103 states. [2021-11-25 20:03:28,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33103 to 33046. [2021-11-25 20:03:28,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33046 states, 19288 states have (on average 1.2971277478224803) internal successors, (25019), 20350 states have internal predecessors, (25019), 11084 states have call successors, (11084), 2706 states have call predecessors, (11084), 2671 states have return successors, (11544), 10689 states have call predecessors, (11544), 11080 states have call successors, (11544) [2021-11-25 20:03:28,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33046 states to 33046 states and 47647 transitions. [2021-11-25 20:03:28,406 INFO L78 Accepts]: Start accepts. Automaton has 33046 states and 47647 transitions. Word has length 210 [2021-11-25 20:03:28,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:28,406 INFO L470 AbstractCegarLoop]: Abstraction has 33046 states and 47647 transitions. [2021-11-25 20:03:28,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 20:03:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 33046 states and 47647 transitions. [2021-11-25 20:03:28,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-25 20:03:28,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:28,414 INFO L514 BasicCegarLoop]: trace histogram [19, 17, 17, 17, 17, 17, 17, 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] [2021-11-25 20:03:28,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:03:28,414 INFO L402 AbstractCegarLoop]: === Iteration 6 === 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)] === [2021-11-25 20:03:28,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:28,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1018920295, now seen corresponding path program 1 times [2021-11-25 20:03:28,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:28,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219596196] [2021-11-25 20:03:28,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:28,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:28,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1165 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1158 trivial. 0 not checked. [2021-11-25 20:03:28,932 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:28,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219596196] [2021-11-25 20:03:28,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219596196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:28,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:28,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:03:28,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11331997] [2021-11-25 20:03:28,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:28,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:03:28,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:28,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:03:28,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:28,935 INFO L87 Difference]: Start difference. First operand 33046 states and 47647 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 20:03:31,196 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:33,744 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:35,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:38,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:38,831 INFO L93 Difference]: Finished difference Result 87305 states and 126008 transitions. [2021-11-25 20:03:38,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:03:38,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 230 [2021-11-25 20:03:38,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:39,401 INFO L225 Difference]: With dead ends: 87305 [2021-11-25 20:03:39,403 INFO L226 Difference]: Without dead ends: 54294 [2021-11-25 20:03:39,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:03:39,563 INFO L933 BasicCegarLoop]: 3905 mSDtfsCounter, 3014 mSDsluCounter, 3291 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3016 SdHoareTripleChecker+Valid, 6753 SdHoareTripleChecker+Invalid, 1042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:39,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3016 Valid, 6753 Invalid, 1042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1027 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2021-11-25 20:03:39,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54294 states. [2021-11-25 20:03:42,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54294 to 54207. [2021-11-25 20:03:42,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54207 states, 31680 states have (on average 1.2965277777777777) internal successors, (41074), 33484 states have internal predecessors, (41074), 18130 states have call successors, (18130), 4455 states have call predecessors, (18130), 4394 states have return successors, (18942), 17428 states have call predecessors, (18942), 18126 states have call successors, (18942) [2021-11-25 20:03:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54207 states to 54207 states and 78146 transitions. [2021-11-25 20:03:43,050 INFO L78 Accepts]: Start accepts. Automaton has 54207 states and 78146 transitions. Word has length 230 [2021-11-25 20:03:43,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:43,068 INFO L470 AbstractCegarLoop]: Abstraction has 54207 states and 78146 transitions. [2021-11-25 20:03:43,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 20:03:43,068 INFO L276 IsEmpty]: Start isEmpty. Operand 54207 states and 78146 transitions. [2021-11-25 20:03:43,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-11-25 20:03:43,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:43,083 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 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] [2021-11-25 20:03:43,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:03:43,092 INFO L402 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)] === [2021-11-25 20:03:43,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:43,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1281098224, now seen corresponding path program 1 times [2021-11-25 20:03:43,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:43,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706266016] [2021-11-25 20:03:43,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:43,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:43,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1258 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1258 trivial. 0 not checked. [2021-11-25 20:03:43,535 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:43,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706266016] [2021-11-25 20:03:43,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706266016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:43,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:43,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:03:43,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941234917] [2021-11-25 20:03:43,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:43,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:03:43,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:43,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:03:43,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:03:43,539 INFO L87 Difference]: Start difference. First operand 54207 states and 78146 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-25 20:03:46,014 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:48,795 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:03:54,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:03:54,087 INFO L93 Difference]: Finished difference Result 55247 states and 79473 transitions. [2021-11-25 20:03:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:03:54,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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 236 [2021-11-25 20:03:54,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:03:54,347 INFO L225 Difference]: With dead ends: 55247 [2021-11-25 20:03:54,347 INFO L226 Difference]: Without dead ends: 55245 [2021-11-25 20:03:54,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:03:54,378 INFO L933 BasicCegarLoop]: 3079 mSDtfsCounter, 3037 mSDsluCounter, 7951 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3052 SdHoareTripleChecker+Valid, 9982 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:03:54,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3052 Valid, 9982 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1530 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2021-11-25 20:03:54,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55245 states. [2021-11-25 20:03:57,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55245 to 55157. [2021-11-25 20:03:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55157 states, 32193 states have (on average 1.2949709564190974) internal successors, (41689), 34025 states have internal predecessors, (41689), 18430 states have call successors, (18430), 4584 states have call predecessors, (18430), 4531 states have return successors, (19250), 17726 states have call predecessors, (19250), 18426 states have call successors, (19250) [2021-11-25 20:03:57,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55157 states to 55157 states and 79369 transitions. [2021-11-25 20:03:57,492 INFO L78 Accepts]: Start accepts. Automaton has 55157 states and 79369 transitions. Word has length 236 [2021-11-25 20:03:57,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:03:57,495 INFO L470 AbstractCegarLoop]: Abstraction has 55157 states and 79369 transitions. [2021-11-25 20:03:57,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 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) [2021-11-25 20:03:57,495 INFO L276 IsEmpty]: Start isEmpty. Operand 55157 states and 79369 transitions. [2021-11-25 20:03:57,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-25 20:03:57,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:03:57,502 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 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] [2021-11-25 20:03:57,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:03:57,502 INFO L402 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)] === [2021-11-25 20:03:57,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:03:57,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1209280520, now seen corresponding path program 1 times [2021-11-25 20:03:57,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:03:57,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092549283] [2021-11-25 20:03:57,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:03:57,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:03:57,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:03:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2021-11-25 20:03:57,895 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:03:57,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092549283] [2021-11-25 20:03:57,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092549283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:03:57,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:03:57,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:03:57,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482353009] [2021-11-25 20:03:57,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:03:57,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:03:57,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:03:57,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:03:57,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:03:57,899 INFO L87 Difference]: Start difference. First operand 55157 states and 79369 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-11-25 20:04:00,143 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:02,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:04,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:07,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:12,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:12,525 INFO L93 Difference]: Finished difference Result 55163 states and 79374 transitions. [2021-11-25 20:04:12,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:04:12,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 240 [2021-11-25 20:04:12,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:12,808 INFO L225 Difference]: With dead ends: 55163 [2021-11-25 20:04:12,809 INFO L226 Difference]: Without dead ends: 55161 [2021-11-25 20:04:12,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:04:12,839 INFO L933 BasicCegarLoop]: 2873 mSDtfsCounter, 3257 mSDsluCounter, 6637 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3269 SdHoareTripleChecker+Valid, 8598 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:12,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3269 Valid, 8598 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1387 Invalid, 2 Unknown, 0 Unchecked, 13.3s Time] [2021-11-25 20:04:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55161 states. [2021-11-25 20:04:15,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55161 to 55161. [2021-11-25 20:04:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55161 states, 32196 states have (on average 1.2949434712386632) internal successors, (41692), 34028 states have internal predecessors, (41692), 18430 states have call successors, (18430), 4585 states have call predecessors, (18430), 4532 states have return successors, (19250), 17726 states have call predecessors, (19250), 18426 states have call successors, (19250) [2021-11-25 20:04:15,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55161 states to 55161 states and 79372 transitions. [2021-11-25 20:04:15,554 INFO L78 Accepts]: Start accepts. Automaton has 55161 states and 79372 transitions. Word has length 240 [2021-11-25 20:04:15,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:15,555 INFO L470 AbstractCegarLoop]: Abstraction has 55161 states and 79372 transitions. [2021-11-25 20:04:15,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-11-25 20:04:15,555 INFO L276 IsEmpty]: Start isEmpty. Operand 55161 states and 79372 transitions. [2021-11-25 20:04:15,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-25 20:04:15,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:15,567 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 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] [2021-11-25 20:04:15,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:04:15,568 INFO L402 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)] === [2021-11-25 20:04:15,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:15,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1379955825, now seen corresponding path program 1 times [2021-11-25 20:04:15,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:15,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853188336] [2021-11-25 20:04:15,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:15,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2021-11-25 20:04:16,005 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:16,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853188336] [2021-11-25 20:04:16,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853188336] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:16,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:16,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:04:16,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154019488] [2021-11-25 20:04:16,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:16,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:04:16,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:16,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:04:16,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:04:16,009 INFO L87 Difference]: Start difference. First operand 55161 states and 79372 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-25 20:04:18,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:21,367 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:26,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:26,077 INFO L93 Difference]: Finished difference Result 55171 states and 79379 transitions. [2021-11-25 20:04:26,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:04:26,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 247 [2021-11-25 20:04:26,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:26,350 INFO L225 Difference]: With dead ends: 55171 [2021-11-25 20:04:26,350 INFO L226 Difference]: Without dead ends: 55169 [2021-11-25 20:04:26,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:04:26,373 INFO L933 BasicCegarLoop]: 3082 mSDtfsCounter, 3032 mSDsluCounter, 7948 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 9985 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:26,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3045 Valid, 9985 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1526 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2021-11-25 20:04:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55169 states. [2021-11-25 20:04:28,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55169 to 55165. [2021-11-25 20:04:28,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55165 states, 32199 states have (on average 1.2949159911798502) internal successors, (41695), 34031 states have internal predecessors, (41695), 18430 states have call successors, (18430), 4586 states have call predecessors, (18430), 4533 states have return successors, (19250), 17726 states have call predecessors, (19250), 18426 states have call successors, (19250) [2021-11-25 20:04:28,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55165 states to 55165 states and 79375 transitions. [2021-11-25 20:04:28,849 INFO L78 Accepts]: Start accepts. Automaton has 55165 states and 79375 transitions. Word has length 247 [2021-11-25 20:04:28,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:28,850 INFO L470 AbstractCegarLoop]: Abstraction has 55165 states and 79375 transitions. [2021-11-25 20:04:28,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-25 20:04:28,851 INFO L276 IsEmpty]: Start isEmpty. Operand 55165 states and 79375 transitions. [2021-11-25 20:04:28,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-25 20:04:28,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:28,860 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 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] [2021-11-25 20:04:28,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:04:28,861 INFO L402 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)] === [2021-11-25 20:04:28,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:28,862 INFO L85 PathProgramCache]: Analyzing trace with hash -833976353, now seen corresponding path program 1 times [2021-11-25 20:04:28,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:29,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73650554] [2021-11-25 20:04:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:29,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1277 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1271 trivial. 0 not checked. [2021-11-25 20:04:29,496 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:29,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73650554] [2021-11-25 20:04:29,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73650554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:29,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:29,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:04:29,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489644882] [2021-11-25 20:04:29,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:29,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:04:29,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:29,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:04:29,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:04:29,499 INFO L87 Difference]: Start difference. First operand 55165 states and 79375 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-25 20:04:31,958 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:34,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:36,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:42,311 INFO L93 Difference]: Finished difference Result 55175 states and 79382 transitions. [2021-11-25 20:04:42,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:04:42,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 252 [2021-11-25 20:04:42,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:42,520 INFO L225 Difference]: With dead ends: 55175 [2021-11-25 20:04:42,520 INFO L226 Difference]: Without dead ends: 55173 [2021-11-25 20:04:42,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:04:42,539 INFO L933 BasicCegarLoop]: 3082 mSDtfsCounter, 3032 mSDsluCounter, 7951 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3044 SdHoareTripleChecker+Valid, 9985 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:42,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3044 Valid, 9985 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1529 Invalid, 2 Unknown, 0 Unchecked, 10.8s Time] [2021-11-25 20:04:42,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55173 states. [2021-11-25 20:04:44,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55173 to 55169. [2021-11-25 20:04:44,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55169 states, 32202 states have (on average 1.2948885162412274) internal successors, (41698), 34034 states have internal predecessors, (41698), 18430 states have call successors, (18430), 4587 states have call predecessors, (18430), 4534 states have return successors, (19250), 17726 states have call predecessors, (19250), 18426 states have call successors, (19250) [2021-11-25 20:04:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55169 states to 55169 states and 79378 transitions. [2021-11-25 20:04:45,351 INFO L78 Accepts]: Start accepts. Automaton has 55169 states and 79378 transitions. Word has length 252 [2021-11-25 20:04:45,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:04:45,352 INFO L470 AbstractCegarLoop]: Abstraction has 55169 states and 79378 transitions. [2021-11-25 20:04:45,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-25 20:04:45,353 INFO L276 IsEmpty]: Start isEmpty. Operand 55169 states and 79378 transitions. [2021-11-25 20:04:45,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-25 20:04:45,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:04:45,363 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 5, 4, 4, 4, 4, 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] [2021-11-25 20:04:45,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:04:45,364 INFO L402 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)] === [2021-11-25 20:04:45,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:04:45,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1491696214, now seen corresponding path program 1 times [2021-11-25 20:04:45,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:04:45,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443822056] [2021-11-25 20:04:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:04:45,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:04:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:04:45,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1295 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1287 trivial. 0 not checked. [2021-11-25 20:04:45,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:04:45,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443822056] [2021-11-25 20:04:45,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443822056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:04:45,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:04:45,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:04:45,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526375864] [2021-11-25 20:04:45,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:04:45,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:04:45,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:04:45,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:04:45,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:04:45,802 INFO L87 Difference]: Start difference. First operand 55169 states and 79378 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-11-25 20:04:47,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:49,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:51,661 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:54,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:04:59,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:04:59,223 INFO L93 Difference]: Finished difference Result 55231 states and 79437 transitions. [2021-11-25 20:04:59,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:04:59,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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 255 [2021-11-25 20:04:59,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:04:59,423 INFO L225 Difference]: With dead ends: 55231 [2021-11-25 20:04:59,424 INFO L226 Difference]: Without dead ends: 55229 [2021-11-25 20:04:59,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:04:59,446 INFO L933 BasicCegarLoop]: 3084 mSDtfsCounter, 3086 mSDsluCounter, 7908 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3097 SdHoareTripleChecker+Valid, 9953 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:04:59,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3097 Valid, 9953 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1519 Invalid, 3 Unknown, 0 Unchecked, 11.4s Time] [2021-11-25 20:04:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55229 states. [2021-11-25 20:05:02,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55229 to 55183. [2021-11-25 20:05:02,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55183 states, 32211 states have (on average 1.2946819409518489) internal successors, (41703), 34043 states have internal predecessors, (41703), 18426 states have call successors, (18426), 4594 states have call predecessors, (18426), 4543 states have return successors, (19254), 17724 states have call predecessors, (19254), 18422 states have call successors, (19254) [2021-11-25 20:05:02,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55183 states to 55183 states and 79383 transitions. [2021-11-25 20:05:02,363 INFO L78 Accepts]: Start accepts. Automaton has 55183 states and 79383 transitions. Word has length 255 [2021-11-25 20:05:02,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:02,364 INFO L470 AbstractCegarLoop]: Abstraction has 55183 states and 79383 transitions. [2021-11-25 20:05:02,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-11-25 20:05:02,364 INFO L276 IsEmpty]: Start isEmpty. Operand 55183 states and 79383 transitions. [2021-11-25 20:05:02,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-25 20:05:02,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:02,372 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 4, 4, 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] [2021-11-25 20:05:02,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:05:02,372 INFO L402 AbstractCegarLoop]: === Iteration 12 === 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)] === [2021-11-25 20:05:02,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:02,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1810437153, now seen corresponding path program 1 times [2021-11-25 20:05:02,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:02,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622217688] [2021-11-25 20:05:02,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:02,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:02,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1254 trivial. 0 not checked. [2021-11-25 20:05:02,686 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:02,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622217688] [2021-11-25 20:05:02,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622217688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:02,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:02,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:05:02,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531731653] [2021-11-25 20:05:02,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:02,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:05:02,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:02,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:05:02,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:05:02,691 INFO L87 Difference]: Start difference. First operand 55183 states and 79383 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-25 20:05:05,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:07,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:08,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:13,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:13,670 INFO L93 Difference]: Finished difference Result 134321 states and 193367 transitions. [2021-11-25 20:05:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:05:13,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 258 [2021-11-25 20:05:13,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:14,028 INFO L225 Difference]: With dead ends: 134321 [2021-11-25 20:05:14,028 INFO L226 Difference]: Without dead ends: 79277 [2021-11-25 20:05:14,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:05:14,430 INFO L933 BasicCegarLoop]: 5332 mSDtfsCounter, 2895 mSDsluCounter, 3274 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2896 SdHoareTripleChecker+Valid, 8166 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:14,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2896 Valid, 8166 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1346 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2021-11-25 20:05:14,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79277 states. [2021-11-25 20:05:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79277 to 79182. [2021-11-25 20:05:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79182 states, 46284 states have (on average 1.293708408953418) internal successors, (59878), 48904 states have internal predecessors, (59878), 26366 states have call successors, (26366), 6608 states have call predecessors, (26366), 6529 states have return successors, (27572), 25343 states have call predecessors, (27572), 26362 states have call successors, (27572) [2021-11-25 20:05:18,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79182 states to 79182 states and 113816 transitions. [2021-11-25 20:05:18,356 INFO L78 Accepts]: Start accepts. Automaton has 79182 states and 113816 transitions. Word has length 258 [2021-11-25 20:05:18,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:18,357 INFO L470 AbstractCegarLoop]: Abstraction has 79182 states and 113816 transitions. [2021-11-25 20:05:18,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-25 20:05:18,357 INFO L276 IsEmpty]: Start isEmpty. Operand 79182 states and 113816 transitions. [2021-11-25 20:05:18,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-25 20:05:18,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:18,363 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 6, 5, 5, 4, 4, 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] [2021-11-25 20:05:18,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:05:18,364 INFO L402 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)] === [2021-11-25 20:05:18,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:18,364 INFO L85 PathProgramCache]: Analyzing trace with hash 915309983, now seen corresponding path program 1 times [2021-11-25 20:05:18,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:18,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488636572] [2021-11-25 20:05:18,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:18,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:19,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1309 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2021-11-25 20:05:19,146 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:19,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488636572] [2021-11-25 20:05:19,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488636572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:19,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:19,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:05:19,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513238995] [2021-11-25 20:05:19,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:19,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:05:19,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:19,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:05:19,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:05:19,149 INFO L87 Difference]: Start difference. First operand 79182 states and 113816 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-25 20:05:21,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:23,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:25,582 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:28,279 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:33,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:05:33,804 INFO L93 Difference]: Finished difference Result 79192 states and 113823 transitions. [2021-11-25 20:05:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 20:05:33,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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 262 [2021-11-25 20:05:33,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:05:34,082 INFO L225 Difference]: With dead ends: 79192 [2021-11-25 20:05:34,082 INFO L226 Difference]: Without dead ends: 79190 [2021-11-25 20:05:34,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:05:34,107 INFO L933 BasicCegarLoop]: 3082 mSDtfsCounter, 3032 mSDsluCounter, 7951 mSDsCounter, 0 mSdLazyCounter, 1528 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 9985 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1528 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:05:34,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3042 Valid, 9985 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1528 Invalid, 3 Unknown, 0 Unchecked, 11.9s Time] [2021-11-25 20:05:34,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79190 states. [2021-11-25 20:05:37,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79190 to 79186. [2021-11-25 20:05:37,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79186 states, 46287 states have (on average 1.2936893728260634) internal successors, (59881), 48907 states have internal predecessors, (59881), 26366 states have call successors, (26366), 6609 states have call predecessors, (26366), 6530 states have return successors, (27572), 25343 states have call predecessors, (27572), 26362 states have call successors, (27572) [2021-11-25 20:05:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79186 states to 79186 states and 113819 transitions. [2021-11-25 20:05:38,457 INFO L78 Accepts]: Start accepts. Automaton has 79186 states and 113819 transitions. Word has length 262 [2021-11-25 20:05:38,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:05:38,458 INFO L470 AbstractCegarLoop]: Abstraction has 79186 states and 113819 transitions. [2021-11-25 20:05:38,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-25 20:05:38,458 INFO L276 IsEmpty]: Start isEmpty. Operand 79186 states and 113819 transitions. [2021-11-25 20:05:38,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-11-25 20:05:38,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:05:38,467 INFO L514 BasicCegarLoop]: trace histogram [21, 17, 17, 17, 17, 17, 17, 7, 6, 6, 4, 4, 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] [2021-11-25 20:05:38,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 20:05:38,468 INFO L402 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)] === [2021-11-25 20:05:38,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:05:38,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1612139632, now seen corresponding path program 1 times [2021-11-25 20:05:38,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:05:38,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721470661] [2021-11-25 20:05:38,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:05:38,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:05:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:05:38,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1318 trivial. 0 not checked. [2021-11-25 20:05:38,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:05:38,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721470661] [2021-11-25 20:05:38,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721470661] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:05:38,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:05:38,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:05:38,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809116418] [2021-11-25 20:05:38,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:05:38,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:05:38,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:05:38,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:05:38,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:05:38,882 INFO L87 Difference]: Start difference. First operand 79186 states and 113819 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 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) [2021-11-25 20:05:41,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:44,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:45,789 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 20:05:47,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []