./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-media-pci-cx88-cx8800.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_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/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_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/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_59671690-a6db-4fb6-8264-3df5e8b2428e/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 bce5aa2319ae110f8a0b01ff2a22780545859bbd4eceb3e6d7a0268461602692 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:57:19,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:57:19,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:57:19,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:57:19,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:57:19,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:57:19,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:57:19,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:57:19,466 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:57:19,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:57:19,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:57:19,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:57:19,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:57:19,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:57:19,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:57:19,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:57:19,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:57:19,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:57:19,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:57:19,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:57:19,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:57:19,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:57:19,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:57:19,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:57:19,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:57:19,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:57:19,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:57:19,516 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:57:19,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:57:19,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:57:19,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:57:19,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:57:19,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:57:19,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:57:19,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:57:19,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:57:19,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:57:19,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:57:19,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:57:19,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:57:19,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:57:19,526 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:57:19,577 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:57:19,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:57:19,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:57:19,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:57:19,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:57:19,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:57:19,585 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:57:19,585 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:57:19,585 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:57:19,585 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:57:19,586 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:57:19,586 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:57:19,586 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:57:19,586 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:57:19,586 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:57:19,587 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:57:19,587 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:57:19,587 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:57:19,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:57:19,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:57:19,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:57:19,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:57:19,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:57:19,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:57:19,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:57:19,589 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:57:19,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:57:19,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:57:19,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:57:19,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:57:19,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:57:19,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:57:19,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:57:19,591 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:57:19,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:57:19,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:57:19,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:57:19,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:57:19,591 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_59671690-a6db-4fb6-8264-3df5e8b2428e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bce5aa2319ae110f8a0b01ff2a22780545859bbd4eceb3e6d7a0268461602692 [2021-11-25 18:57:19,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:57:19,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:57:19,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:57:19,869 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:57:19,870 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:57:19,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2021-11-25 18:57:19,954 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/data/c58f5a80c/0cf83994c9984ff48b7ac3475287bb1a/FLAG4e2a377b1 [2021-11-25 18:57:20,993 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:57:20,994 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2021-11-25 18:57:21,067 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/data/c58f5a80c/0cf83994c9984ff48b7ac3475287bb1a/FLAG4e2a377b1 [2021-11-25 18:57:21,302 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/data/c58f5a80c/0cf83994c9984ff48b7ac3475287bb1a [2021-11-25 18:57:21,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:57:21,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:57:21,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:57:21,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:57:21,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:57:21,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:57:21" (1/1) ... [2021-11-25 18:57:21,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d701947 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:57:21, skipping insertion in model container [2021-11-25 18:57:21,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:57:21" (1/1) ... [2021-11-25 18:57:21,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:57:21,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:57:26,110 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_59671690-a6db-4fb6-8264-3df5e8b2428e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588044,588057] [2021-11-25 18:57:26,113 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_59671690-a6db-4fb6-8264-3df5e8b2428e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588213,588226] [2021-11-25 18:57:26,114 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_59671690-a6db-4fb6-8264-3df5e8b2428e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588380,588393] [2021-11-25 18:57:26,114 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_59671690-a6db-4fb6-8264-3df5e8b2428e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588548,588561] [2021-11-25 18:57:26,148 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:57:26,298 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:57:27,189 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_59671690-a6db-4fb6-8264-3df5e8b2428e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588044,588057] [2021-11-25 18:57:27,189 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_59671690-a6db-4fb6-8264-3df5e8b2428e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588213,588226] [2021-11-25 18:57:27,190 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_59671690-a6db-4fb6-8264-3df5e8b2428e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588380,588393] [2021-11-25 18:57:27,191 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_59671690-a6db-4fb6-8264-3df5e8b2428e/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i[588548,588561] [2021-11-25 18:57:27,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:57:27,453 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:57:27,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:57:27 WrapperNode [2021-11-25 18:57:27,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:57:27,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:57:27,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:57:27,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:57:27,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:57:27" (1/1) ... [2021-11-25 18:57:27,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:57:27" (1/1) ... [2021-11-25 18:57:27,947 INFO L137 Inliner]: procedures = 539, calls = 4204, calls flagged for inlining = 262, calls inlined = 249, statements flattened = 8457 [2021-11-25 18:57:27,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:57:27,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:57:27,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:57:27,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:57:27,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:57:27" (1/1) ... [2021-11-25 18:57:27,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:57:27" (1/1) ... [2021-11-25 18:57:28,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:57:27" (1/1) ... [2021-11-25 18:57:28,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:57:27" (1/1) ... [2021-11-25 18:57:28,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:57:27" (1/1) ... [2021-11-25 18:57:28,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:57:27" (1/1) ... [2021-11-25 18:57:28,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:57:27" (1/1) ... [2021-11-25 18:57:28,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:57:28,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:57:28,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:57:28,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:57:28,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:57:27" (1/1) ... [2021-11-25 18:57:28,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:57:28,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:57:28,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:57:28,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:57:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure video_open [2021-11-25 18:57:28,598 INFO L138 BoogieDeclarations]: Found implementation of procedure video_open [2021-11-25 18:57:28,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 18:57:28,598 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 18:57:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamon [2021-11-25 18:57:28,599 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamon [2021-11-25 18:57:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_unregister_video [2021-11-25 18:57:28,599 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_unregister_video [2021-11-25 18:57:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_fmt_vid_cap [2021-11-25 18:57:28,599 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_fmt_vid_cap [2021-11-25 18:57:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 18:57:28,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 18:57:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_input [2021-11-25 18:57:28,600 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_input [2021-11-25 18:57:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_reqbufs [2021-11-25 18:57:28,600 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_reqbufs [2021-11-25 18:57:28,601 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_fmt_vid_cap [2021-11-25 18:57:28,601 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_fmt_vid_cap [2021-11-25 18:57:28,601 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-25 18:57:28,601 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-25 18:57:28,601 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvnorm [2021-11-25 18:57:28,601 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvnorm [2021-11-25 18:57:28,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_77 [2021-11-25 18:57:28,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_77 [2021-11-25 18:57:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_tvaudio [2021-11-25 18:57:28,602 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_tvaudio [2021-11-25 18:57:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:57:28,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 18:57:28,602 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_vid_ctrl [2021-11-25 18:57:28,603 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_vid_ctrl [2021-11-25 18:57:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure res_free [2021-11-25 18:57:28,603 INFO L138 BoogieDeclarations]: Found implementation of procedure res_free [2021-11-25 18:57:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_slock_of_cx8800_dev [2021-11-25 18:57:28,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_slock_of_cx8800_dev [2021-11-25 18:57:28,603 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-25 18:57:28,604 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-25 18:57:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_to_dma [2021-11-25 18:57:28,604 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_to_dma [2021-11-25 18:57:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_shutdown [2021-11-25 18:57:28,604 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_shutdown [2021-11-25 18:57:28,604 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-25 18:57:28,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2021-11-25 18:57:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_fmt_vid_cap [2021-11-25 18:57:28,605 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_fmt_vid_cap [2021-11-25 18:57:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_newstation [2021-11-25 18:57:28,605 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_newstation [2021-11-25 18:57:28,605 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_std [2021-11-25 18:57:28,606 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_std [2021-11-25 18:57:28,606 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_vdev_init [2021-11-25 18:57:28,606 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_vdev_init [2021-11-25 18:57:28,606 INFO L130 BoogieDeclarations]: Found specification of procedure video_mmap [2021-11-25 18:57:28,606 INFO L138 BoogieDeclarations]: Found implementation of procedure video_mmap [2021-11-25 18:57:28,606 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2021-11-25 18:57:28,607 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2021-11-25 18:57:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 18:57:28,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 18:57:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 18:57:28,607 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 18:57:28,607 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_del_timer [2021-11-25 18:57:28,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_del_timer [2021-11-25 18:57:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-25 18:57:28,608 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-25 18:57:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 18:57:28,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 18:57:28,608 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_poll [2021-11-25 18:57:28,608 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_poll [2021-11-25 18:57:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_frequency [2021-11-25 18:57:28,609 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_frequency [2021-11-25 18:57:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querybuf [2021-11-25 18:57:28,609 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querybuf [2021-11-25 18:57:28,609 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_register [2021-11-25 18:57:28,609 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_register [2021-11-25 18:57:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure video_devdata [2021-11-25 18:57:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure video_devdata [2021-11-25 18:57:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_setup [2021-11-25 18:57:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_setup [2021-11-25 18:57:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:57:28,610 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_stereo [2021-11-25 18:57:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_stereo [2021-11-25 18:57:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_vbi_fmt [2021-11-25 18:57:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_vbi_fmt [2021-11-25 18:57:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-25 18:57:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-25 18:57:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_audio_thread [2021-11-25 18:57:28,611 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_try_fmt_vid_cap [2021-11-25 18:57:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_try_fmt_vid_cap [2021-11-25 18:57:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure video_ioctl2 [2021-11-25 18:57:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure video_ioctl2 [2021-11-25 18:57:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:57:28,612 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-11-25 18:57:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~X~~u32~0~X~~u32~0~TO~int [2021-11-25 18:57:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 18:57:28,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 18:57:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_restart_vbi_queue [2021-11-25 18:57:28,613 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_restart_vbi_queue [2021-11-25 18:57:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:57:28,613 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_finidev [2021-11-25 18:57:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_finidev [2021-11-25 18:57:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_interrupt_context [2021-11-25 18:57:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_interrupt_context [2021-11-25 18:57:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure list_move_tail [2021-11-25 18:57:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move_tail [2021-11-25 18:57:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_querycap [2021-11-25 18:57:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_querycap [2021-11-25 18:57:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 18:57:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 18:57:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_set_freq [2021-11-25 18:57:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_set_freq [2021-11-25 18:57:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 18:57:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 18:57:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_s_aud_ctrl [2021-11-25 18:57:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_s_aud_ctrl [2021-11-25 18:57:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure video_read [2021-11-25 18:57:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure video_read [2021-11-25 18:57:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-25 18:57:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-25 18:57:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_video_mux [2021-11-25 18:57:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_video_mux [2021-11-25 18:57:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-25 18:57:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-25 18:57:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure video_is_registered [2021-11-25 18:57:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure video_is_registered [2021-11-25 18:57:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_subscribe_event [2021-11-25 18:57:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_subscribe_event [2021-11-25 18:57:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure video_unregister_device [2021-11-25 18:57:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure video_unregister_device [2021-11-25 18:57:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:57:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 18:57:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:57:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 18:57:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 18:57:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 18:57:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 18:57:28,619 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 18:57:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 18:57:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mod_timer [2021-11-25 18:57:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mod_timer [2021-11-25 18:57:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_queue_sg_init [2021-11-25 18:57:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_queue_sg_init [2021-11-25 18:57:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:57:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 18:57:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 18:57:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:57:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure video_release [2021-11-25 18:57:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure video_release [2021-11-25 18:57:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:57:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-25 18:57:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:57:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-25 18:57:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure restart_video_queue [2021-11-25 18:57:28,622 INFO L138 BoogieDeclarations]: Found implementation of procedure restart_video_queue [2021-11-25 18:57:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_qbuf [2021-11-25 18:57:28,622 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_qbuf [2021-11-25 18:57:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_wakeup [2021-11-25 18:57:28,622 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_wakeup [2021-11-25 18:57:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-25 18:57:28,623 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-25 18:57:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_s_ctrl [2021-11-25 18:57:28,623 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_s_ctrl [2021-11-25 18:57:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 18:57:28,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 18:57:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_iolock [2021-11-25 18:57:28,624 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_iolock [2021-11-25 18:57:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_enum_input [2021-11-25 18:57:28,624 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_enum_input [2021-11-25 18:57:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_dump [2021-11-25 18:57:28,624 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_dump [2021-11-25 18:57:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure video_set_drvdata [2021-11-25 18:57:28,624 INFO L138 BoogieDeclarations]: Found implementation of procedure video_set_drvdata [2021-11-25 18:57:28,625 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_g_tuner [2021-11-25 18:57:28,625 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_g_tuner [2021-11-25 18:57:28,625 INFO L130 BoogieDeclarations]: Found specification of procedure res_check [2021-11-25 18:57:28,625 INFO L138 BoogieDeclarations]: Found implementation of procedure res_check [2021-11-25 18:57:28,625 INFO L130 BoogieDeclarations]: Found specification of procedure format_by_fourcc [2021-11-25 18:57:28,625 INFO L138 BoogieDeclarations]: Found implementation of procedure format_by_fourcc [2021-11-25 18:57:28,625 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_buffer [2021-11-25 18:57:28,626 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_buffer [2021-11-25 18:57:28,626 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-25 18:57:28,626 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-25 18:57:28,626 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-25 18:57:28,626 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-25 18:57:28,626 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_event_unsubscribe [2021-11-25 18:57:28,626 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_event_unsubscribe [2021-11-25 18:57:28,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:57:28,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:57:28,627 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_risc_stopper [2021-11-25 18:57:28,627 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_risc_stopper [2021-11-25 18:57:28,627 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-25 18:57:28,627 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-25 18:57:28,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-25 18:57:28,628 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-25 18:57:28,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 18:57:28,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 18:57:28,628 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_std [2021-11-25 18:57:28,628 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_std [2021-11-25 18:57:28,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:57:28,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 18:57:28,629 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_streamoff [2021-11-25 18:57:28,629 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_streamoff [2021-11-25 18:57:28,629 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_sram_channel_setup [2021-11-25 18:57:28,629 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_sram_channel_setup [2021-11-25 18:57:28,629 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_free_buffer [2021-11-25 18:57:28,629 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_free_buffer [2021-11-25 18:57:28,630 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-25 18:57:28,630 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-25 18:57:28,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_to_process_context [2021-11-25 18:57:28,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_to_process_context [2021-11-25 18:57:28,630 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_enum_input [2021-11-25 18:57:28,630 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_enum_input [2021-11-25 18:57:28,630 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 18:57:28,631 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 18:57:28,631 INFO L130 BoogieDeclarations]: Found specification of procedure res_get [2021-11-25 18:57:28,631 INFO L138 BoogieDeclarations]: Found implementation of procedure res_get [2021-11-25 18:57:28,631 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_mmap_free [2021-11-25 18:57:28,631 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_mmap_free [2021-11-25 18:57:28,631 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_resume [2021-11-25 18:57:28,631 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_resume [2021-11-25 18:57:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2021-11-25 18:57:28,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_cx8800_pci_driver_exit_15_2 [2021-11-25 18:57:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_frequency [2021-11-25 18:57:28,632 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_frequency [2021-11-25 18:57:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-25 18:57:28,632 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-25 18:57:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-11-25 18:57:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-11-25 18:57:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure video_poll [2021-11-25 18:57:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure video_poll [2021-11-25 18:57:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:57:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-25 18:57:28,633 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-25 18:57:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:57:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_core_put [2021-11-25 18:57:28,634 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_core_put [2021-11-25 18:57:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_find [2021-11-25 18:57:28,634 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_find [2021-11-25 18:57:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure buffer_release [2021-11-25 18:57:28,635 INFO L138 BoogieDeclarations]: Found implementation of procedure buffer_release [2021-11-25 18:57:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure start_video_dma [2021-11-25 18:57:28,635 INFO L138 BoogieDeclarations]: Found implementation of procedure start_video_dma [2021-11-25 18:57:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:57:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_node_name [2021-11-25 18:57:28,635 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_node_name [2021-11-25 18:57:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 18:57:28,636 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 18:57:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure get_queue [2021-11-25 18:57:28,636 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queue [2021-11-25 18:57:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 18:57:28,636 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 18:57:28,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 18:57:28,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 18:57:28,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-25 18:57:28,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-25 18:57:28,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 18:57:28,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 18:57:28,637 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_dqbuf [2021-11-25 18:57:28,638 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_dqbuf [2021-11-25 18:57:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-25 18:57:28,638 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-25 18:57:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_querycap [2021-11-25 18:57:28,638 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_querycap [2021-11-25 18:57:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure video_register_device [2021-11-25 18:57:28,638 INFO L138 BoogieDeclarations]: Found implementation of procedure video_register_device [2021-11-25 18:57:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_78 [2021-11-25 18:57:28,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_78 [2021-11-25 18:57:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 18:57:28,639 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 18:57:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:57:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 18:57:28,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 18:57:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_79 [2021-11-25 18:57:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_79 [2021-11-25 18:57:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_input [2021-11-25 18:57:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_input [2021-11-25 18:57:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2021-11-25 18:57:28,640 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2021-11-25 18:57:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_tuner [2021-11-25 18:57:28,641 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_tuner [2021-11-25 18:57:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 18:57:28,641 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 18:57:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_start_vbi_dma [2021-11-25 18:57:28,641 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_start_vbi_dma [2021-11-25 18:57:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_ir_stop [2021-11-25 18:57:28,641 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_ir_stop [2021-11-25 18:57:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure vidioc_s_register [2021-11-25 18:57:28,642 INFO L138 BoogieDeclarations]: Found implementation of procedure vidioc_s_register [2021-11-25 18:57:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 18:57:28,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 18:57:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure init_timer_key [2021-11-25 18:57:28,642 INFO L138 BoogieDeclarations]: Found implementation of procedure init_timer_key [2021-11-25 18:57:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2021-11-25 18:57:28,643 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2021-11-25 18:57:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxw [2021-11-25 18:57:28,643 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxw [2021-11-25 18:57:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-25 18:57:28,643 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-25 18:57:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure norm_maxh [2021-11-25 18:57:28,643 INFO L138 BoogieDeclarations]: Found implementation of procedure norm_maxh [2021-11-25 18:57:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure get_resource [2021-11-25 18:57:28,644 INFO L138 BoogieDeclarations]: Found implementation of procedure get_resource [2021-11-25 18:57:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 18:57:28,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 18:57:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-25 18:57:28,644 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-25 18:57:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure cx8800_initdev [2021-11-25 18:57:28,644 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8800_initdev [2021-11-25 18:57:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:57:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_slock_of_cx8800_dev [2021-11-25 18:57:28,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_slock_of_cx8800_dev [2021-11-25 18:57:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 18:57:28,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 18:57:30,027 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:57:30,031 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:57:30,289 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 18:57:55,390 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 18:57:55,494 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:57:56,948 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:57:56,948 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 18:57:56,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:57:56 BoogieIcfgContainer [2021-11-25 18:57:56,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:57:56,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:57:56,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:57:56,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:57:56,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:57:21" (1/3) ... [2021-11-25 18:57:56,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60925162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:57:56, skipping insertion in model container [2021-11-25 18:57:56,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:57:27" (2/3) ... [2021-11-25 18:57:56,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60925162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:57:56, skipping insertion in model container [2021-11-25 18:57:56,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:57:56" (3/3) ... [2021-11-25 18:57:56,963 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-pci-cx88-cx8800.cil.i [2021-11-25 18:57:56,969 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:57:56,969 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 18:57:57,027 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:57:57,034 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 18:57:57,035 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 18:57:57,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 2242 states, 1324 states have (on average 1.3006042296072509) internal successors, (1722), 1340 states have internal predecessors, (1722), 768 states have call successors, (768), 148 states have call predecessors, (768), 147 states have return successors, (761), 760 states have call predecessors, (761), 761 states have call successors, (761) [2021-11-25 18:57:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2021-11-25 18:57:57,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:57:57,170 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:57:57,171 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 18:57:57,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:57:57,181 INFO L85 PathProgramCache]: Analyzing trace with hash 76814640, now seen corresponding path program 1 times [2021-11-25 18:57:57,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:57:57,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879441578] [2021-11-25 18:57:57,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:57:57,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:57:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:57:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9509 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9509 trivial. 0 not checked. [2021-11-25 18:57:58,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:57:58,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879441578] [2021-11-25 18:57:58,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879441578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:57:58,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:57:58,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:57:58,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658637673] [2021-11-25 18:57:58,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:57:58,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:57:58,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:57:58,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:57:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:57:58,667 INFO L87 Difference]: Start difference. First operand has 2242 states, 1324 states have (on average 1.3006042296072509) internal successors, (1722), 1340 states have internal predecessors, (1722), 768 states have call successors, (768), 148 states have call predecessors, (768), 147 states have return successors, (761), 760 states have call predecessors, (761), 761 states have call successors, (761) Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-25 18:58:04,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:58:06,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:06,788 INFO L93 Difference]: Finished difference Result 6440 states and 9455 transitions. [2021-11-25 18:58:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:58:06,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 515 [2021-11-25 18:58:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:06,868 INFO L225 Difference]: With dead ends: 6440 [2021-11-25 18:58:06,868 INFO L226 Difference]: Without dead ends: 4286 [2021-11-25 18:58:06,891 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 18:58:06,897 INFO L933 BasicCegarLoop]: 3451 mSDtfsCounter, 2990 mSDsluCounter, 3181 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2990 SdHoareTripleChecker+Valid, 6184 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:06,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2990 Valid, 6184 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 954 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2021-11-25 18:58:06,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4286 states. [2021-11-25 18:58:07,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4286 to 4281. [2021-11-25 18:58:07,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4281 states, 2553 states have (on average 1.2965139052095573) internal successors, (3310), 2585 states have internal predecessors, (3310), 1435 states have call successors, (1435), 291 states have call predecessors, (1435), 290 states have return successors, (1431), 1428 states have call predecessors, (1431), 1431 states have call successors, (1431) [2021-11-25 18:58:07,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4281 states to 4281 states and 6176 transitions. [2021-11-25 18:58:07,326 INFO L78 Accepts]: Start accepts. Automaton has 4281 states and 6176 transitions. Word has length 515 [2021-11-25 18:58:07,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:07,328 INFO L470 AbstractCegarLoop]: Abstraction has 4281 states and 6176 transitions. [2021-11-25 18:58:07,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-25 18:58:07,329 INFO L276 IsEmpty]: Start isEmpty. Operand 4281 states and 6176 transitions. [2021-11-25 18:58:07,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2021-11-25 18:58:07,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:07,349 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:07,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:58:07,349 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 18:58:07,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:07,350 INFO L85 PathProgramCache]: Analyzing trace with hash -836954322, now seen corresponding path program 1 times [2021-11-25 18:58:07,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:07,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608945890] [2021-11-25 18:58:07,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:07,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:08,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9506 trivial. 0 not checked. [2021-11-25 18:58:08,275 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:08,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608945890] [2021-11-25 18:58:08,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608945890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:08,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:08,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:58:08,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134411392] [2021-11-25 18:58:08,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:08,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:58:08,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:08,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:58:08,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:08,286 INFO L87 Difference]: Start difference. First operand 4281 states and 6176 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-25 18:58:12,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:12,279 INFO L93 Difference]: Finished difference Result 10287 states and 14833 transitions. [2021-11-25 18:58:12,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:58:12,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) Word has length 524 [2021-11-25 18:58:12,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:12,337 INFO L225 Difference]: With dead ends: 10287 [2021-11-25 18:58:12,338 INFO L226 Difference]: Without dead ends: 6105 [2021-11-25 18:58:12,359 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 18:58:12,361 INFO L933 BasicCegarLoop]: 3495 mSDtfsCounter, 2820 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2820 SdHoareTripleChecker+Valid, 6212 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:12,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2820 Valid, 6212 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 18:58:12,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6105 states. [2021-11-25 18:58:12,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6105 to 6080. [2021-11-25 18:58:12,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6080 states, 3655 states have (on average 1.2990424076607388) internal successors, (4748), 3700 states have internal predecessors, (4748), 1999 states have call successors, (1999), 425 states have call predecessors, (1999), 423 states have return successors, (1995), 1986 states have call predecessors, (1995), 1995 states have call successors, (1995) [2021-11-25 18:58:12,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 8742 transitions. [2021-11-25 18:58:12,764 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 8742 transitions. Word has length 524 [2021-11-25 18:58:12,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:12,769 INFO L470 AbstractCegarLoop]: Abstraction has 6080 states and 8742 transitions. [2021-11-25 18:58:12,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 3 states have call predecessors, (54), 3 states have call successors, (54) [2021-11-25 18:58:12,770 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 8742 transitions. [2021-11-25 18:58:12,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2021-11-25 18:58:12,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:12,790 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:12,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:58:12,791 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 18:58:12,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:12,792 INFO L85 PathProgramCache]: Analyzing trace with hash -796047328, now seen corresponding path program 1 times [2021-11-25 18:58:12,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:12,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930060766] [2021-11-25 18:58:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:12,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 9510 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9510 trivial. 0 not checked. [2021-11-25 18:58:13,445 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:13,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930060766] [2021-11-25 18:58:13,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930060766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:13,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:13,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:58:13,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877331661] [2021-11-25 18:58:13,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:13,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:58:13,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:13,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:58:13,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:13,454 INFO L87 Difference]: Start difference. First operand 6080 states and 8742 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-25 18:58:16,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:58:20,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:58:22,573 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:58:23,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:23,170 INFO L93 Difference]: Finished difference Result 17862 states and 25711 transitions. [2021-11-25 18:58:23,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:58:23,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) Word has length 535 [2021-11-25 18:58:23,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:23,280 INFO L225 Difference]: With dead ends: 17862 [2021-11-25 18:58:23,280 INFO L226 Difference]: Without dead ends: 11881 [2021-11-25 18:58:23,317 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 18:58:23,322 INFO L933 BasicCegarLoop]: 3449 mSDtfsCounter, 2972 mSDsluCounter, 3223 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2972 SdHoareTripleChecker+Valid, 6216 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:23,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2972 Valid, 6216 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 924 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2021-11-25 18:58:23,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11881 states. [2021-11-25 18:58:24,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11881 to 11852. [2021-11-25 18:58:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11852 states, 7155 states have (on average 1.3032844164919637) internal successors, (9325), 7248 states have internal predecessors, (9325), 3856 states have call successors, (3856), 842 states have call predecessors, (3856), 838 states have return successors, (3896), 3825 states have call predecessors, (3896), 3852 states have call successors, (3896) [2021-11-25 18:58:24,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11852 states to 11852 states and 17077 transitions. [2021-11-25 18:58:24,251 INFO L78 Accepts]: Start accepts. Automaton has 11852 states and 17077 transitions. Word has length 535 [2021-11-25 18:58:24,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:24,253 INFO L470 AbstractCegarLoop]: Abstraction has 11852 states and 17077 transitions. [2021-11-25 18:58:24,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (59), 2 states have call predecessors, (59), 1 states have return successors, (57), 3 states have call predecessors, (57), 3 states have call successors, (57) [2021-11-25 18:58:24,255 INFO L276 IsEmpty]: Start isEmpty. Operand 11852 states and 17077 transitions. [2021-11-25 18:58:24,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2021-11-25 18:58:24,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:24,276 INFO L514 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:24,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:58:24,277 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 18:58:24,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:24,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1253381912, now seen corresponding path program 1 times [2021-11-25 18:58:24,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:24,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115412974] [2021-11-25 18:58:24,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:24,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 9514 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9514 trivial. 0 not checked. [2021-11-25 18:58:24,877 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:24,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115412974] [2021-11-25 18:58:24,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115412974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:24,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:24,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:58:24,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042523495] [2021-11-25 18:58:24,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:24,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:58:24,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:24,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:58:24,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:24,880 INFO L87 Difference]: Start difference. First operand 11852 states and 17077 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-25 18:58:28,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:58:30,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:30,977 INFO L93 Difference]: Finished difference Result 34842 states and 50344 transitions. [2021-11-25 18:58:30,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:58:30,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 541 [2021-11-25 18:58:30,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:31,141 INFO L225 Difference]: With dead ends: 34842 [2021-11-25 18:58:31,141 INFO L226 Difference]: Without dead ends: 23089 [2021-11-25 18:58:31,204 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 18:58:31,205 INFO L933 BasicCegarLoop]: 3556 mSDtfsCounter, 2959 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2959 SdHoareTripleChecker+Valid, 6300 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:31,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2959 Valid, 6300 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 948 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-11-25 18:58:31,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23089 states. [2021-11-25 18:58:32,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23089 to 23048. [2021-11-25 18:58:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23048 states, 13977 states have (on average 1.3048579809687344) internal successors, (18238), 14145 states have internal predecessors, (18238), 7430 states have call successors, (7430), 1655 states have call predecessors, (7430), 1638 states have return successors, (7680), 7339 states have call predecessors, (7680), 7426 states have call successors, (7680) [2021-11-25 18:58:32,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23048 states to 23048 states and 33348 transitions. [2021-11-25 18:58:32,652 INFO L78 Accepts]: Start accepts. Automaton has 23048 states and 33348 transitions. Word has length 541 [2021-11-25 18:58:32,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:32,654 INFO L470 AbstractCegarLoop]: Abstraction has 23048 states and 33348 transitions. [2021-11-25 18:58:32,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-25 18:58:32,654 INFO L276 IsEmpty]: Start isEmpty. Operand 23048 states and 33348 transitions. [2021-11-25 18:58:32,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2021-11-25 18:58:32,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:32,669 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:32,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:58:32,670 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:58:32,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:32,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1748940919, now seen corresponding path program 1 times [2021-11-25 18:58:32,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:32,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63488113] [2021-11-25 18:58:32,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:32,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 9846 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9846 trivial. 0 not checked. [2021-11-25 18:58:33,884 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:33,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63488113] [2021-11-25 18:58:33,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63488113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:33,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:33,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:58:33,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057543250] [2021-11-25 18:58:33,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:33,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:58:33,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:33,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:58:33,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:58:33,887 INFO L87 Difference]: Start difference. First operand 23048 states and 33348 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-25 18:58:38,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:58:42,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:42,070 INFO L93 Difference]: Finished difference Result 38703 states and 56024 transitions. [2021-11-25 18:58:42,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:58:42,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 560 [2021-11-25 18:58:42,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:42,284 INFO L225 Difference]: With dead ends: 38703 [2021-11-25 18:58:42,284 INFO L226 Difference]: Without dead ends: 38701 [2021-11-25 18:58:42,308 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 18:58:42,311 INFO L933 BasicCegarLoop]: 3533 mSDtfsCounter, 3081 mSDsluCounter, 11068 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3092 SdHoareTripleChecker+Valid, 13195 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:42,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3092 Valid, 13195 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1899 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-11-25 18:58:42,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38701 states. [2021-11-25 18:58:44,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38701 to 38691. [2021-11-25 18:58:44,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38691 states, 23433 states have (on average 1.3058080484786412) internal successors, (30599), 23729 states have internal predecessors, (30599), 12499 states have call successors, (12499), 2788 states have call predecessors, (12499), 2756 states have return successors, (12917), 12329 states have call predecessors, (12917), 12491 states have call successors, (12917) [2021-11-25 18:58:44,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38691 states to 38691 states and 56015 transitions. [2021-11-25 18:58:44,678 INFO L78 Accepts]: Start accepts. Automaton has 38691 states and 56015 transitions. Word has length 560 [2021-11-25 18:58:44,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:44,679 INFO L470 AbstractCegarLoop]: Abstraction has 38691 states and 56015 transitions. [2021-11-25 18:58:44,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (62), 3 states have call predecessors, (62), 1 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2021-11-25 18:58:44,679 INFO L276 IsEmpty]: Start isEmpty. Operand 38691 states and 56015 transitions. [2021-11-25 18:58:44,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2021-11-25 18:58:44,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:44,697 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:44,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:58:44,698 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:58:44,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:44,699 INFO L85 PathProgramCache]: Analyzing trace with hash 266708014, now seen corresponding path program 1 times [2021-11-25 18:58:44,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:44,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315086197] [2021-11-25 18:58:44,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:44,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:45,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9848 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9846 trivial. 0 not checked. [2021-11-25 18:58:45,615 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:45,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315086197] [2021-11-25 18:58:45,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315086197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:45,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:45,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:58:45,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560058101] [2021-11-25 18:58:45,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:45,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:58:45,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:45,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:58:45,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:58:45,618 INFO L87 Difference]: Start difference. First operand 38691 states and 56015 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-25 18:58:51,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:51,566 INFO L93 Difference]: Finished difference Result 38701 states and 56024 transitions. [2021-11-25 18:58:51,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:58:51,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 565 [2021-11-25 18:58:51,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:51,799 INFO L225 Difference]: With dead ends: 38701 [2021-11-25 18:58:51,799 INFO L226 Difference]: Without dead ends: 38699 [2021-11-25 18:58:51,820 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 18:58:51,822 INFO L933 BasicCegarLoop]: 2755 mSDtfsCounter, 3081 mSDsluCounter, 6417 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3091 SdHoareTripleChecker+Valid, 8246 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:51,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3091 Valid, 8246 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-25 18:58:51,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38699 states. [2021-11-25 18:58:53,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38699 to 38699. [2021-11-25 18:58:53,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38699 states, 23439 states have (on average 1.3057297666282692) internal successors, (30605), 23735 states have internal predecessors, (30605), 12499 states have call successors, (12499), 2790 states have call predecessors, (12499), 2758 states have return successors, (12917), 12329 states have call predecessors, (12917), 12491 states have call successors, (12917) [2021-11-25 18:58:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38699 states to 38699 states and 56021 transitions. [2021-11-25 18:58:54,358 INFO L78 Accepts]: Start accepts. Automaton has 38699 states and 56021 transitions. Word has length 565 [2021-11-25 18:58:54,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:54,376 INFO L470 AbstractCegarLoop]: Abstraction has 38699 states and 56021 transitions. [2021-11-25 18:58:54,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-25 18:58:54,376 INFO L276 IsEmpty]: Start isEmpty. Operand 38699 states and 56021 transitions. [2021-11-25 18:58:54,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2021-11-25 18:58:54,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:54,394 INFO L514 BasicCegarLoop]: trace histogram [51, 49, 49, 49, 49, 49, 49, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:54,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:58:54,394 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 18:58:54,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:54,395 INFO L85 PathProgramCache]: Analyzing trace with hash -745632414, now seen corresponding path program 1 times [2021-11-25 18:58:54,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:54,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40999575] [2021-11-25 18:58:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:54,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:54,625 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:58:54,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698259713] [2021-11-25 18:58:54,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:54,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:58:54,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:58:54,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:58:54,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:58:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:58:57,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 8855 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:58:57,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:58:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 9665 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 9445 trivial. 0 not checked. [2021-11-25 18:58:58,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:58:58,154 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:58:58,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40999575] [2021-11-25 18:58:58,155 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:58:58,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698259713] [2021-11-25 18:58:58,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698259713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:58:58,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:58:58,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:58:58,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359892008] [2021-11-25 18:58:58,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:58:58,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:58:58,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:58:58,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:58:58,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:58:58,158 INFO L87 Difference]: Start difference. First operand 38699 states and 56021 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-25 18:59:01,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:59:03,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:03,721 INFO L93 Difference]: Finished difference Result 61704 states and 89314 transitions. [2021-11-25 18:59:03,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:03,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 575 [2021-11-25 18:59:03,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:03,974 INFO L225 Difference]: With dead ends: 61704 [2021-11-25 18:59:03,974 INFO L226 Difference]: Without dead ends: 46039 [2021-11-25 18:59:04,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 573 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 18:59:04,041 INFO L933 BasicCegarLoop]: 3527 mSDtfsCounter, 2708 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2708 SdHoareTripleChecker+Valid, 6241 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:04,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2708 Valid, 6241 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 981 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-25 18:59:04,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46039 states. [2021-11-25 18:59:06,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46039 to 46035. [2021-11-25 18:59:06,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46035 states, 27930 states have (on average 1.305263157894737) internal successors, (36456), 28266 states have internal predecessors, (36456), 14811 states have call successors, (14811), 3325 states have call predecessors, (14811), 3291 states have return successors, (15311), 14627 states have call predecessors, (15311), 14803 states have call successors, (15311) [2021-11-25 18:59:06,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46035 states to 46035 states and 66578 transitions. [2021-11-25 18:59:06,642 INFO L78 Accepts]: Start accepts. Automaton has 46035 states and 66578 transitions. Word has length 575 [2021-11-25 18:59:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:06,643 INFO L470 AbstractCegarLoop]: Abstraction has 46035 states and 66578 transitions. [2021-11-25 18:59:06,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (63), 3 states have call predecessors, (63), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2021-11-25 18:59:06,644 INFO L276 IsEmpty]: Start isEmpty. Operand 46035 states and 66578 transitions. [2021-11-25 18:59:06,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2021-11-25 18:59:06,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:06,663 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:59:06,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:59:06,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:06,884 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 18:59:06,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:06,884 INFO L85 PathProgramCache]: Analyzing trace with hash 90879403, now seen corresponding path program 1 times [2021-11-25 18:59:06,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:06,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551736958] [2021-11-25 18:59:06,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:06,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 9855 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9851 trivial. 0 not checked. [2021-11-25 18:59:07,957 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:07,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551736958] [2021-11-25 18:59:07,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551736958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:07,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:07,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:59:07,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728502315] [2021-11-25 18:59:07,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:07,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:59:07,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:07,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:59:07,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:07,960 INFO L87 Difference]: Start difference. First operand 46035 states and 66578 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-25 18:59:13,211 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:59:16,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:16,087 INFO L93 Difference]: Finished difference Result 46053 states and 66592 transitions. [2021-11-25 18:59:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:59:16,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) Word has length 571 [2021-11-25 18:59:16,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:16,300 INFO L225 Difference]: With dead ends: 46053 [2021-11-25 18:59:16,300 INFO L226 Difference]: Without dead ends: 46051 [2021-11-25 18:59:16,324 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 18:59:16,324 INFO L933 BasicCegarLoop]: 3536 mSDtfsCounter, 3076 mSDsluCounter, 11068 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3085 SdHoareTripleChecker+Valid, 13198 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:16,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3085 Valid, 13198 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1899 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-25 18:59:16,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46051 states. [2021-11-25 18:59:18,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46051 to 46039. [2021-11-25 18:59:18,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46039 states, 27933 states have (on average 1.3052303726774783) internal successors, (36459), 28269 states have internal predecessors, (36459), 14811 states have call successors, (14811), 3326 states have call predecessors, (14811), 3292 states have return successors, (15311), 14627 states have call predecessors, (15311), 14803 states have call successors, (15311) [2021-11-25 18:59:18,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46039 states to 46039 states and 66581 transitions. [2021-11-25 18:59:18,259 INFO L78 Accepts]: Start accepts. Automaton has 46039 states and 66581 transitions. Word has length 571 [2021-11-25 18:59:18,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:18,260 INFO L470 AbstractCegarLoop]: Abstraction has 46039 states and 66581 transitions. [2021-11-25 18:59:18,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (62), 2 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-25 18:59:18,260 INFO L276 IsEmpty]: Start isEmpty. Operand 46039 states and 66581 transitions. [2021-11-25 18:59:18,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2021-11-25 18:59:18,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:18,281 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:59:18,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 18:59:18,282 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 18:59:18,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:18,282 INFO L85 PathProgramCache]: Analyzing trace with hash 966789977, now seen corresponding path program 1 times [2021-11-25 18:59:18,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:18,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577680064] [2021-11-25 18:59:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:18,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9861 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9855 trivial. 0 not checked. [2021-11-25 18:59:19,546 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:19,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577680064] [2021-11-25 18:59:19,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577680064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:19,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:19,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:59:19,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638052406] [2021-11-25 18:59:19,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:19,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:59:19,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:19,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:59:19,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:19,549 INFO L87 Difference]: Start difference. First operand 46039 states and 66581 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-25 18:59:24,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:59:28,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:28,671 INFO L93 Difference]: Finished difference Result 46057 states and 66595 transitions. [2021-11-25 18:59:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:59:28,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 576 [2021-11-25 18:59:28,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:28,936 INFO L225 Difference]: With dead ends: 46057 [2021-11-25 18:59:28,936 INFO L226 Difference]: Without dead ends: 46055 [2021-11-25 18:59:28,951 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 18:59:28,951 INFO L933 BasicCegarLoop]: 3536 mSDtfsCounter, 3077 mSDsluCounter, 11068 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3085 SdHoareTripleChecker+Valid, 13198 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:28,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3085 Valid, 13198 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1899 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2021-11-25 18:59:28,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46055 states. [2021-11-25 18:59:30,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46055 to 46043. [2021-11-25 18:59:30,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46043 states, 27936 states have (on average 1.3051975945017182) internal successors, (36462), 28272 states have internal predecessors, (36462), 14811 states have call successors, (14811), 3327 states have call predecessors, (14811), 3293 states have return successors, (15311), 14627 states have call predecessors, (15311), 14803 states have call successors, (15311) [2021-11-25 18:59:30,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46043 states to 46043 states and 66584 transitions. [2021-11-25 18:59:30,775 INFO L78 Accepts]: Start accepts. Automaton has 46043 states and 66584 transitions. Word has length 576 [2021-11-25 18:59:30,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:30,776 INFO L470 AbstractCegarLoop]: Abstraction has 46043 states and 66584 transitions. [2021-11-25 18:59:30,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-25 18:59:30,776 INFO L276 IsEmpty]: Start isEmpty. Operand 46043 states and 66584 transitions. [2021-11-25 18:59:30,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2021-11-25 18:59:30,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:30,796 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:59:30,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 18:59:30,796 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:59:30,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash -657266931, now seen corresponding path program 1 times [2021-11-25 18:59:30,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:30,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432871000] [2021-11-25 18:59:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:30,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 9845 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9842 trivial. 0 not checked. [2021-11-25 18:59:31,646 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:31,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432871000] [2021-11-25 18:59:31,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432871000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:31,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:31,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:59:31,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45160947] [2021-11-25 18:59:31,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:31,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:31,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:31,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:31,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:31,650 INFO L87 Difference]: Start difference. First operand 46043 states and 66584 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-25 18:59:36,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:59:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:39,035 INFO L93 Difference]: Finished difference Result 92457 states and 133856 transitions. [2021-11-25 18:59:39,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:39,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) Word has length 575 [2021-11-25 18:59:39,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:39,264 INFO L225 Difference]: With dead ends: 92457 [2021-11-25 18:59:39,264 INFO L226 Difference]: Without dead ends: 61137 [2021-11-25 18:59:39,355 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 18:59:39,355 INFO L933 BasicCegarLoop]: 5087 mSDtfsCounter, 2809 mSDsluCounter, 3163 mSDsCounter, 0 mSdLazyCounter, 1392 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2809 SdHoareTripleChecker+Valid, 7802 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1392 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:39,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2809 Valid, 7802 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1392 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-11-25 18:59:39,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61137 states. [2021-11-25 18:59:41,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61137 to 61059. [2021-11-25 18:59:41,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61059 states, 37070 states have (on average 1.3057458861613165) internal successors, (48404), 37522 states have internal predecessors, (48404), 19603 states have call successors, (19603), 4429 states have call predecessors, (19603), 4383 states have return successors, (20267), 19347 states have call predecessors, (20267), 19595 states have call successors, (20267) [2021-11-25 18:59:42,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61059 states to 61059 states and 88274 transitions. [2021-11-25 18:59:42,149 INFO L78 Accepts]: Start accepts. Automaton has 61059 states and 88274 transitions. Word has length 575 [2021-11-25 18:59:42,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:42,151 INFO L470 AbstractCegarLoop]: Abstraction has 61059 states and 88274 transitions. [2021-11-25 18:59:42,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (64), 2 states have call predecessors, (64), 1 states have return successors, (62), 3 states have call predecessors, (62), 3 states have call successors, (62) [2021-11-25 18:59:42,151 INFO L276 IsEmpty]: Start isEmpty. Operand 61059 states and 88274 transitions. [2021-11-25 18:59:42,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2021-11-25 18:59:42,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:42,172 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:59:42,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 18:59:42,173 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 18:59:42,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:42,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1033509705, now seen corresponding path program 1 times [2021-11-25 18:59:42,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:42,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712332994] [2021-11-25 18:59:42,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:42,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9878 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9870 trivial. 0 not checked. [2021-11-25 18:59:43,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:43,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712332994] [2021-11-25 18:59:43,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712332994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:43,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:43,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:59:43,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18398593] [2021-11-25 18:59:43,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:43,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:59:43,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:43,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:59:43,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:43,214 INFO L87 Difference]: Start difference. First operand 61059 states and 88274 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-25 18:59:46,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:59:49,695 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:59:51,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 18:59:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:53,880 INFO L93 Difference]: Finished difference Result 61069 states and 88283 transitions. [2021-11-25 18:59:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:59:53,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 580 [2021-11-25 18:59:53,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:54,224 INFO L225 Difference]: With dead ends: 61069 [2021-11-25 18:59:54,224 INFO L226 Difference]: Without dead ends: 61067 [2021-11-25 18:59:54,242 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 18:59:54,243 INFO L933 BasicCegarLoop]: 2755 mSDtfsCounter, 3081 mSDsluCounter, 6417 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3088 SdHoareTripleChecker+Valid, 8246 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:54,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3088 Valid, 8246 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1406 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2021-11-25 18:59:54,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61067 states. [2021-11-25 18:59:56,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61067 to 61067. [2021-11-25 18:59:56,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61067 states, 37076 states have (on average 1.3056964073794368) internal successors, (48410), 37528 states have internal predecessors, (48410), 19603 states have call successors, (19603), 4431 states have call predecessors, (19603), 4385 states have return successors, (20267), 19347 states have call predecessors, (20267), 19595 states have call successors, (20267) [2021-11-25 18:59:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61067 states to 61067 states and 88280 transitions. [2021-11-25 18:59:56,804 INFO L78 Accepts]: Start accepts. Automaton has 61067 states and 88280 transitions. Word has length 580 [2021-11-25 18:59:56,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:56,805 INFO L470 AbstractCegarLoop]: Abstraction has 61067 states and 88280 transitions. [2021-11-25 18:59:56,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-25 18:59:56,805 INFO L276 IsEmpty]: Start isEmpty. Operand 61067 states and 88280 transitions. [2021-11-25 18:59:56,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2021-11-25 18:59:56,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:56,830 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:59:56,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 18:59:56,830 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 18:59:56,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:56,831 INFO L85 PathProgramCache]: Analyzing trace with hash -824096422, now seen corresponding path program 1 times [2021-11-25 18:59:56,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:56,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206591110] [2021-11-25 18:59:56,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:56,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9897 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9887 trivial. 0 not checked. [2021-11-25 18:59:57,640 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:57,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206591110] [2021-11-25 18:59:57,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206591110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:57,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:57,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:59:57,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731315996] [2021-11-25 18:59:57,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:57,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:59:57,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:57,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:59:57,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:59:57,643 INFO L87 Difference]: Start difference. First operand 61067 states and 88280 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-25 19:00:02,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:00:05,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 19:00:08,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:08,065 INFO L93 Difference]: Finished difference Result 61085 states and 88294 transitions. [2021-11-25 19:00:08,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:00:08,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 586 [2021-11-25 19:00:08,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:08,269 INFO L225 Difference]: With dead ends: 61085 [2021-11-25 19:00:08,269 INFO L226 Difference]: Without dead ends: 61083 [2021-11-25 19:00:08,295 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 19:00:08,295 INFO L933 BasicCegarLoop]: 3595 mSDtfsCounter, 3076 mSDsluCounter, 11210 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3082 SdHoareTripleChecker+Valid, 13375 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:08,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3082 Valid, 13375 Invalid, 1938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1934 Invalid, 2 Unknown, 0 Unchecked, 8.4s Time] [2021-11-25 19:00:08,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61083 states. [2021-11-25 19:00:10,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61083 to 61071. [2021-11-25 19:00:10,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61071 states, 37079 states have (on average 1.3056716739933656) internal successors, (48413), 37531 states have internal predecessors, (48413), 19603 states have call successors, (19603), 4432 states have call predecessors, (19603), 4386 states have return successors, (20267), 19347 states have call predecessors, (20267), 19595 states have call successors, (20267) [2021-11-25 19:00:10,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61071 states to 61071 states and 88283 transitions. [2021-11-25 19:00:10,864 INFO L78 Accepts]: Start accepts. Automaton has 61071 states and 88283 transitions. Word has length 586 [2021-11-25 19:00:10,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:10,865 INFO L470 AbstractCegarLoop]: Abstraction has 61071 states and 88283 transitions. [2021-11-25 19:00:10,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (67), 3 states have call predecessors, (67), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-25 19:00:10,865 INFO L276 IsEmpty]: Start isEmpty. Operand 61071 states and 88283 transitions. [2021-11-25 19:00:10,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2021-11-25 19:00:10,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:10,881 INFO L514 BasicCegarLoop]: trace histogram [53, 49, 49, 49, 49, 49, 49, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:00:10,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 19:00:10,882 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 19:00:10,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:10,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1384604076, now seen corresponding path program 1 times [2021-11-25 19:00:10,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:10,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488899685] [2021-11-25 19:00:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:10,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:12,017 INFO L134 CoverageAnalysis]: Checked inductivity of 9915 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 9903 trivial. 0 not checked. [2021-11-25 19:00:12,017 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:12,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488899685] [2021-11-25 19:00:12,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488899685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:12,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:12,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:00:12,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228397346] [2021-11-25 19:00:12,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:12,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:00:12,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:12,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:00:12,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:00:12,020 INFO L87 Difference]: Start difference. First operand 61071 states and 88283 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-25 19:00:17,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:00:17,760 INFO L93 Difference]: Finished difference Result 61081 states and 88292 transitions. [2021-11-25 19:00:17,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:00:17,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 591 [2021-11-25 19:00:17,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:00:18,003 INFO L225 Difference]: With dead ends: 61081 [2021-11-25 19:00:18,003 INFO L226 Difference]: Without dead ends: 61079 [2021-11-25 19:00:18,022 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 19:00:18,022 INFO L933 BasicCegarLoop]: 2755 mSDtfsCounter, 3082 mSDsluCounter, 6417 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 8246 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-25 19:00:18,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3087 Valid, 8246 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-25 19:00:18,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61079 states. [2021-11-25 19:00:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61079 to 61079. [2021-11-25 19:00:20,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61079 states, 37085 states have (on average 1.3056222192261022) internal successors, (48419), 37537 states have internal predecessors, (48419), 19603 states have call successors, (19603), 4434 states have call predecessors, (19603), 4388 states have return successors, (20267), 19347 states have call predecessors, (20267), 19595 states have call successors, (20267) [2021-11-25 19:00:20,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61079 states to 61079 states and 88289 transitions. [2021-11-25 19:00:20,777 INFO L78 Accepts]: Start accepts. Automaton has 61079 states and 88289 transitions. Word has length 591 [2021-11-25 19:00:20,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:00:20,778 INFO L470 AbstractCegarLoop]: Abstraction has 61079 states and 88289 transitions. [2021-11-25 19:00:20,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (66), 3 states have call predecessors, (66), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-25 19:00:20,778 INFO L276 IsEmpty]: Start isEmpty. Operand 61079 states and 88289 transitions. [2021-11-25 19:00:20,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2021-11-25 19:00:20,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:00:20,795 INFO L514 BasicCegarLoop]: trace histogram [51, 49, 49, 49, 49, 49, 49, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:00:20,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 19:00:20,795 INFO L402 AbstractCegarLoop]: === Iteration 14 === 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 19:00:20,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:00:20,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1295098522, now seen corresponding path program 1 times [2021-11-25 19:00:20,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:00:20,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707130706] [2021-11-25 19:00:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:20,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:00:21,025 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:00:21,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1122342274] [2021-11-25 19:00:21,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:00:21,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:21,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:21,035 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:00:21,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59671690-a6db-4fb6-8264-3df5e8b2428e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:00:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:23,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 8956 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 19:00:23,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9659 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 9451 trivial. 0 not checked. [2021-11-25 19:00:24,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:00:24,310 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:24,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707130706] [2021-11-25 19:00:24,310 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:00:24,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122342274] [2021-11-25 19:00:24,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122342274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:00:24,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:00:24,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:00:24,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623290134] [2021-11-25 19:00:24,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:00:24,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:00:24,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:00:24,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:00:24,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:00:24,314 INFO L87 Difference]: Start difference. First operand 61079 states and 88289 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (68), 3 states have call predecessors, (68), 3 states have return successors, (65), 3 states have call predecessors, (65), 3 states have call successors, (65)