./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.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_a10ab5c3-2268-4231-b5b7-7514b49c838d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10ab5c3-2268-4231-b5b7-7514b49c838d/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_a10ab5c3-2268-4231-b5b7-7514b49c838d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10ab5c3-2268-4231-b5b7-7514b49c838d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10ab5c3-2268-4231-b5b7-7514b49c838d/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_a10ab5c3-2268-4231-b5b7-7514b49c838d/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 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:49:52,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:49:52,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:49:52,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:49:52,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:49:52,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:49:52,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:49:52,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:49:52,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:49:52,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:49:52,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:49:52,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:49:52,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:49:52,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:49:52,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:49:52,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:49:52,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:49:52,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:49:52,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:49:52,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:49:52,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:49:52,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:49:52,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:49:52,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:49:52,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:49:52,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:49:52,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:49:52,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:49:52,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:49:52,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:49:52,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:49:52,789 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:49:52,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:49:52,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:49:52,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:49:52,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:49:52,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:49:52,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:49:52,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:49:52,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:49:52,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:49:52,799 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10ab5c3-2268-4231-b5b7-7514b49c838d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 17:49:52,846 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:49:52,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:49:52,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:49:52,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:49:52,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:49:52,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:49:52,856 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:49:52,856 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:49:52,856 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:49:52,856 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:49:52,858 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:49:52,858 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:49:52,858 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:49:52,859 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:49:52,859 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:49:52,859 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:49:52,860 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:49:52,860 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:49:52,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:49:52,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:49:52,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:49:52,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:49:52,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:49:52,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:49:52,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:49:52,863 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:49:52,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:49:52,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:49:52,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:49:52,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:49:52,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:49:52,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:49:52,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:49:52,867 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:49:52,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:49:52,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:49:52,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:49:52,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:49:52,869 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_a10ab5c3-2268-4231-b5b7-7514b49c838d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10ab5c3-2268-4231-b5b7-7514b49c838d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb [2021-11-25 17:49:53,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:49:53,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:49:53,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:49:53,199 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:49:53,200 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:49:53,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10ab5c3-2268-4231-b5b7-7514b49c838d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-25 17:49:53,290 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10ab5c3-2268-4231-b5b7-7514b49c838d/bin/utaipan-eEHZpOm5b7/data/e8ded27c6/9a413f854cb84281956c293a41e26544/FLAGb63038d9a [2021-11-25 17:49:54,329 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:49:54,330 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10ab5c3-2268-4231-b5b7-7514b49c838d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-25 17:49:54,386 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10ab5c3-2268-4231-b5b7-7514b49c838d/bin/utaipan-eEHZpOm5b7/data/e8ded27c6/9a413f854cb84281956c293a41e26544/FLAGb63038d9a [2021-11-25 17:49:54,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10ab5c3-2268-4231-b5b7-7514b49c838d/bin/utaipan-eEHZpOm5b7/data/e8ded27c6/9a413f854cb84281956c293a41e26544 [2021-11-25 17:49:54,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:49:54,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:49:54,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:49:54,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:49:54,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:49:54,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:49:54" (1/1) ... [2021-11-25 17:49:54,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c56d1b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:54, skipping insertion in model container [2021-11-25 17:49:54,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:49:54" (1/1) ... [2021-11-25 17:49:54,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:49:55,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:49:58,534 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_a10ab5c3-2268-4231-b5b7-7514b49c838d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325823,325836] [2021-11-25 17:49:58,537 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_a10ab5c3-2268-4231-b5b7-7514b49c838d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325992,326005] [2021-11-25 17:49:58,538 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_a10ab5c3-2268-4231-b5b7-7514b49c838d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326159,326172] [2021-11-25 17:49:58,539 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_a10ab5c3-2268-4231-b5b7-7514b49c838d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326327,326340] [2021-11-25 17:49:58,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:49:58,645 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:49:59,099 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_a10ab5c3-2268-4231-b5b7-7514b49c838d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325823,325836] [2021-11-25 17:49:59,100 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_a10ab5c3-2268-4231-b5b7-7514b49c838d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325992,326005] [2021-11-25 17:49:59,101 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_a10ab5c3-2268-4231-b5b7-7514b49c838d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326159,326172] [2021-11-25 17:49:59,101 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_a10ab5c3-2268-4231-b5b7-7514b49c838d/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326327,326340] [2021-11-25 17:49:59,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:49:59,471 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:49:59,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:59 WrapperNode [2021-11-25 17:49:59,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:49:59,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:49:59,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:49:59,474 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:49:59,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:59" (1/1) ... [2021-11-25 17:49:59,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:59" (1/1) ... [2021-11-25 17:49:59,903 INFO L137 Inliner]: procedures = 424, calls = 2565, calls flagged for inlining = 194, calls inlined = 144, statements flattened = 4931 [2021-11-25 17:49:59,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:49:59,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:49:59,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:49:59,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:49:59,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:59" (1/1) ... [2021-11-25 17:49:59,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:59" (1/1) ... [2021-11-25 17:49:59,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:59" (1/1) ... [2021-11-25 17:49:59,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:59" (1/1) ... [2021-11-25 17:50:00,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:59" (1/1) ... [2021-11-25 17:50:00,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:59" (1/1) ... [2021-11-25 17:50:00,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:59" (1/1) ... [2021-11-25 17:50:00,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:50:00,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:50:00,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:50:00,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:50:00,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:59" (1/1) ... [2021-11-25 17:50:00,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:50:00,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10ab5c3-2268-4231-b5b7-7514b49c838d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:50:00,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10ab5c3-2268-4231-b5b7-7514b49c838d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:50:00,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a10ab5c3-2268-4231-b5b7-7514b49c838d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:50:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-25 17:50:00,412 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-25 17:50:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-25 17:50:00,412 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-25 17:50:00,412 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-25 17:50:00,413 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-25 17:50:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-25 17:50:00,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-25 17:50:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 17:50:00,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-25 17:50:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-25 17:50:00,413 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-25 17:50:00,413 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_stereo_mono [2021-11-25 17:50:00,413 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_stereo_mono [2021-11-25 17:50:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-25 17:50:00,414 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-25 17:50:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_59 [2021-11-25 17:50:00,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_59 [2021-11-25 17:50:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_len [2021-11-25 17:50:00,414 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_len [2021-11-25 17:50:00,414 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2021-11-25 17:50:00,415 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2021-11-25 17:50:00,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-25 17:50:00,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-25 17:50:00,415 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-25 17:50:00,415 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-25 17:50:00,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_49 [2021-11-25 17:50:00,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_49 [2021-11-25 17:50:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-25 17:50:00,416 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-25 17:50:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-25 17:50:00,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-25 17:50:00,416 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-25 17:50:00,416 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-25 17:50:00,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:50:00,417 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-25 17:50:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-25 17:50:00,417 INFO L130 BoogieDeclarations]: Found specification of procedure st_unregister [2021-11-25 17:50:00,417 INFO L138 BoogieDeclarations]: Found implementation of procedure st_unregister [2021-11-25 17:50:00,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-25 17:50:00,417 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-25 17:50:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-25 17:50:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-25 17:50:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-25 17:50:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 17:50:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-25 17:50:00,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-25 17:50:00,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 17:50:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_release [2021-11-25 17:50:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_release [2021-11-25 17:50:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-25 17:50:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-25 17:50:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-25 17:50:00,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-25 17:50:00,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-25 17:50:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-25 17:50:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_rds_mode [2021-11-25 17:50:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_rds_mode [2021-11-25 17:50:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-11-25 17:50:00,420 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-11-25 17:50:00,420 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2021-11-25 17:50:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2021-11-25 17:50:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_rds_mode [2021-11-25 17:50:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_rds_mode [2021-11-25 17:50:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 17:50:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-25 17:50:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 17:50:00,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-25 17:50:00,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-25 17:50:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-25 17:50:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-25 17:50:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-25 17:50:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-25 17:50:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-25 17:50:00,422 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-25 17:50:00,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:50:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-25 17:50:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-25 17:50:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 17:50:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-25 17:50:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-25 17:50:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-25 17:50:00,423 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-25 17:50:00,423 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_preemph_filter [2021-11-25 17:50:00,424 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_preemph_filter [2021-11-25 17:50:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-25 17:50:00,424 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-25 17:50:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-25 17:50:00,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-25 17:50:00,424 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-25 17:50:00,424 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-25 17:50:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-25 17:50:00,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-25 17:50:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-25 17:50:00,425 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-25 17:50:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure fm_g_volatile_ctrl [2021-11-25 17:50:00,425 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_g_volatile_ctrl [2021-11-25 17:50:00,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:50:00,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:50:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-25 17:50:00,426 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-25 17:50:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-25 17:50:00,426 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-25 17:50:00,426 INFO L130 BoogieDeclarations]: Found specification of procedure fm_config_rx_mute_reg [2021-11-25 17:50:00,426 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_config_rx_mute_reg [2021-11-25 17:50:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-11-25 17:50:00,427 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-11-25 17:50:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-25 17:50:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 17:50:00,427 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_data_mode [2021-11-25 17:50:00,428 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_data_mode [2021-11-25 17:50:00,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-25 17:50:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-25 17:50:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_pwr_lvl [2021-11-25 17:50:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_pwr_lvl [2021-11-25 17:50:00,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 17:50:00,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-25 17:50:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-25 17:50:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-25 17:50:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_prepare [2021-11-25 17:50:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_prepare [2021-11-25 17:50:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_send_cmd [2021-11-25 17:50:00,430 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_send_cmd [2021-11-25 17:50:00,430 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-25 17:50:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-25 17:50:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-25 17:50:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-25 17:50:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_resp_skb_lock_of_fmdev [2021-11-25 17:50:00,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_resp_skb_lock_of_fmdev [2021-11-25 17:50:00,431 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-25 17:50:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-25 17:50:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure fm_send_cmd [2021-11-25 17:50:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_send_cmd [2021-11-25 17:50:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-25 17:50:00,432 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-25 17:50:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 17:50:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 17:50:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call_stage [2021-11-25 17:50:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call_stage [2021-11-25 17:50:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-25 17:50:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-25 17:50:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2021-11-25 17:50:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2021-11-25 17:50:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:50:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2021-11-25 17:50:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2021-11-25 17:50:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 17:50:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_rds_cache [2021-11-25 17:50:00,434 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_rds_cache [2021-11-25 17:50:00,434 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_station_info [2021-11-25 17:50:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_station_info [2021-11-25 17:50:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_s_ctrl [2021-11-25 17:50:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_s_ctrl [2021-11-25 17:50:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 17:50:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rds_buff_lock_of_fmdev [2021-11-25 17:50:00,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rds_buff_lock_of_fmdev [2021-11-25 17:50:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-25 17:50:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-25 17:50:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2021-11-25 17:50:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2021-11-25 17:50:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure enable_xmit [2021-11-25 17:50:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_xmit [2021-11-25 17:50:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-25 17:50:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-25 17:50:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_volume [2021-11-25 17:50:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_volume [2021-11-25 17:50:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-25 17:50:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-25 17:50:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-25 17:50:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-25 17:50:00,438 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-25 17:50:00,438 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-25 17:50:00,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-25 17:50:00,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-25 17:50:00,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-25 17:50:00,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-25 17:50:00,438 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_text [2021-11-25 17:50:00,439 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_text [2021-11-25 17:50:00,439 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-11-25 17:50:00,439 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-11-25 17:50:00,439 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_release [2021-11-25 17:50:00,439 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_release [2021-11-25 17:50:00,439 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-25 17:50:00,440 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-25 17:50:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-25 17:50:00,440 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-25 17:50:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-25 17:50:00,440 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-25 17:50:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 17:50:00,440 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-25 17:50:00,441 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-25 17:50:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-25 17:50:00,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-25 17:50:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_open [2021-11-25 17:50:00,441 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_open [2021-11-25 17:50:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-25 17:50:00,441 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-25 17:50:00,441 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_freq [2021-11-25 17:50:00,442 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_freq [2021-11-25 17:50:00,442 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_mode [2021-11-25 17:50:00,442 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_mode [2021-11-25 17:50:00,442 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_write [2021-11-25 17:50:00,442 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_write [2021-11-25 17:50:00,442 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-25 17:50:00,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-25 17:50:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call [2021-11-25 17:50:00,443 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call [2021-11-25 17:50:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-25 17:50:00,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-25 17:50:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-25 17:50:00,443 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-25 17:50:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure fm_power_down [2021-11-25 17:50:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_power_down [2021-11-25 17:50:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure fm_download_firmware [2021-11-25 17:50:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_download_firmware [2021-11-25 17:50:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:50:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-25 17:50:00,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-25 17:50:01,213 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:50:01,217 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:50:01,407 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-25 17:50:05,947 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-25 17:50:06,041 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:50:07,213 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:50:07,213 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 17:50:07,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:50:07 BoogieIcfgContainer [2021-11-25 17:50:07,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:50:07,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:50:07,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:50:07,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:50:07,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:49:54" (1/3) ... [2021-11-25 17:50:07,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da36f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:50:07, skipping insertion in model container [2021-11-25 17:50:07,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:49:59" (2/3) ... [2021-11-25 17:50:07,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da36f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:50:07, skipping insertion in model container [2021-11-25 17:50:07,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:50:07" (3/3) ... [2021-11-25 17:50:07,237 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-25 17:50:07,249 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:50:07,250 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-25 17:50:07,335 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:50:07,356 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 17:50:07,359 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-25 17:50:07,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 1364 states, 830 states have (on average 1.3457831325301204) internal successors, (1117), 846 states have internal predecessors, (1117), 431 states have call successors, (431), 101 states have call predecessors, (431), 100 states have return successors, (424), 421 states have call predecessors, (424), 424 states have call successors, (424) [2021-11-25 17:50:07,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-25 17:50:07,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:07,481 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:50:07,482 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 17:50:07,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:07,489 INFO L85 PathProgramCache]: Analyzing trace with hash -459651737, now seen corresponding path program 1 times [2021-11-25 17:50:07,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:07,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516146253] [2021-11-25 17:50:07,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:07,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:08,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-25 17:50:08,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:08,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516146253] [2021-11-25 17:50:08,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516146253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:08,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:08,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:50:08,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445028262] [2021-11-25 17:50:08,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:08,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:50:08,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:08,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:50:08,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:50:08,678 INFO L87 Difference]: Start difference. First operand has 1364 states, 830 states have (on average 1.3457831325301204) internal successors, (1117), 846 states have internal predecessors, (1117), 431 states have call successors, (431), 101 states have call predecessors, (431), 100 states have return successors, (424), 421 states have call predecessors, (424), 424 states have call successors, (424) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 17:50:10,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:14,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:16,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:16,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:16,802 INFO L93 Difference]: Finished difference Result 3868 states and 5833 transitions. [2021-11-25 17:50:16,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:50:16,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 216 [2021-11-25 17:50:16,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:16,864 INFO L225 Difference]: With dead ends: 3868 [2021-11-25 17:50:16,864 INFO L226 Difference]: Without dead ends: 2532 [2021-11-25 17:50:16,890 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 17:50:16,897 INFO L933 BasicCegarLoop]: 2059 mSDtfsCounter, 1810 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 3654 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:16,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1810 Valid, 3654 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 530 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2021-11-25 17:50:16,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2021-11-25 17:50:17,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2528. [2021-11-25 17:50:17,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 1560 states have (on average 1.3429487179487178) internal successors, (2095), 1590 states have internal predecessors, (2095), 774 states have call successors, (774), 192 states have call predecessors, (774), 191 states have return successors, (770), 764 states have call predecessors, (770), 770 states have call successors, (770) [2021-11-25 17:50:17,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 3639 transitions. [2021-11-25 17:50:17,262 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 3639 transitions. Word has length 216 [2021-11-25 17:50:17,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:17,268 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 3639 transitions. [2021-11-25 17:50:17,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-25 17:50:17,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 3639 transitions. [2021-11-25 17:50:17,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-25 17:50:17,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:17,284 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:50:17,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:50:17,285 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 17:50:17,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:17,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2069863399, now seen corresponding path program 1 times [2021-11-25 17:50:17,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:17,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188998048] [2021-11-25 17:50:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:17,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:17,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2021-11-25 17:50:17,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:17,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188998048] [2021-11-25 17:50:17,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188998048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:17,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:17,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:50:17,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472392757] [2021-11-25 17:50:17,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:17,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:50:17,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:17,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:50:17,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:50:17,881 INFO L87 Difference]: Start difference. First operand 2528 states and 3639 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 17:50:21,643 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:21,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:21,951 INFO L93 Difference]: Finished difference Result 4873 states and 6977 transitions. [2021-11-25 17:50:21,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:50:21,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 226 [2021-11-25 17:50:21,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:21,987 INFO L225 Difference]: With dead ends: 4873 [2021-11-25 17:50:21,987 INFO L226 Difference]: Without dead ends: 2384 [2021-11-25 17:50:22,009 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 17:50:22,011 INFO L933 BasicCegarLoop]: 1580 mSDtfsCounter, 1730 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1732 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:22,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1732 Valid, 1662 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 252 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-11-25 17:50:22,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2384 states. [2021-11-25 17:50:22,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2384 to 2380. [2021-11-25 17:50:22,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2380 states, 1474 states have (on average 1.3351424694708276) internal successors, (1968), 1486 states have internal predecessors, (1968), 712 states have call successors, (712), 192 states have call predecessors, (712), 191 states have return successors, (708), 708 states have call predecessors, (708), 708 states have call successors, (708) [2021-11-25 17:50:22,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2380 states to 2380 states and 3388 transitions. [2021-11-25 17:50:22,236 INFO L78 Accepts]: Start accepts. Automaton has 2380 states and 3388 transitions. Word has length 226 [2021-11-25 17:50:22,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:22,238 INFO L470 AbstractCegarLoop]: Abstraction has 2380 states and 3388 transitions. [2021-11-25 17:50:22,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 17:50:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2380 states and 3388 transitions. [2021-11-25 17:50:22,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-25 17:50:22,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:22,249 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:50:22,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 17:50:22,250 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 17:50:22,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:22,251 INFO L85 PathProgramCache]: Analyzing trace with hash -245297999, now seen corresponding path program 1 times [2021-11-25 17:50:22,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:22,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877515841] [2021-11-25 17:50:22,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:22,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:22,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-25 17:50:22,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:22,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877515841] [2021-11-25 17:50:22,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877515841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:22,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:22,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:50:22,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813008783] [2021-11-25 17:50:22,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:22,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:50:22,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:22,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:50:22,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:50:22,645 INFO L87 Difference]: Start difference. First operand 2380 states and 3388 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-25 17:50:25,891 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 17:50:29,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:29,267 INFO L93 Difference]: Finished difference Result 6848 states and 9742 transitions. [2021-11-25 17:50:29,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:50:29,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 232 [2021-11-25 17:50:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:29,307 INFO L225 Difference]: With dead ends: 6848 [2021-11-25 17:50:29,308 INFO L226 Difference]: Without dead ends: 4525 [2021-11-25 17:50:29,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:50:29,324 INFO L933 BasicCegarLoop]: 1955 mSDtfsCounter, 1597 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:29,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1597 Valid, 3507 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 505 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-25 17:50:29,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4525 states. [2021-11-25 17:50:29,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4525 to 4499. [2021-11-25 17:50:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4499 states, 2790 states have (on average 1.3333333333333333) internal successors, (3720), 2816 states have internal predecessors, (3720), 1337 states have call successors, (1337), 370 states have call predecessors, (1337), 369 states have return successors, (1333), 1326 states have call predecessors, (1333), 1333 states have call successors, (1333) [2021-11-25 17:50:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4499 states to 4499 states and 6390 transitions. [2021-11-25 17:50:29,654 INFO L78 Accepts]: Start accepts. Automaton has 4499 states and 6390 transitions. Word has length 232 [2021-11-25 17:50:29,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:29,656 INFO L470 AbstractCegarLoop]: Abstraction has 4499 states and 6390 transitions. [2021-11-25 17:50:29,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-25 17:50:29,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4499 states and 6390 transitions. [2021-11-25 17:50:29,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-25 17:50:29,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:29,668 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2021-11-25 17:50:29,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 17:50:29,669 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 17:50:29,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:29,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1328768305, now seen corresponding path program 1 times [2021-11-25 17:50:29,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:29,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806719134] [2021-11-25 17:50:29,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:29,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2021-11-25 17:50:30,182 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:30,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806719134] [2021-11-25 17:50:30,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806719134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:30,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:30,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:50:30,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998981933] [2021-11-25 17:50:30,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:30,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:50:30,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:30,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:50:30,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:50:30,185 INFO L87 Difference]: Start difference. First operand 4499 states and 6390 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 17:50:33,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:36,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:36,784 INFO L93 Difference]: Finished difference Result 4505 states and 6395 transitions. [2021-11-25 17:50:36,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:50:36,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 261 [2021-11-25 17:50:36,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:36,829 INFO L225 Difference]: With dead ends: 4505 [2021-11-25 17:50:36,829 INFO L226 Difference]: Without dead ends: 4503 [2021-11-25 17:50:36,833 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 17:50:36,834 INFO L933 BasicCegarLoop]: 1561 mSDtfsCounter, 1740 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 4673 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:36,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1748 Valid, 4673 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-25 17:50:36,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states. [2021-11-25 17:50:37,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 4503. [2021-11-25 17:50:37,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4503 states, 2793 states have (on average 1.3329752953813103) internal successors, (3723), 2819 states have internal predecessors, (3723), 1337 states have call successors, (1337), 371 states have call predecessors, (1337), 370 states have return successors, (1333), 1326 states have call predecessors, (1333), 1333 states have call successors, (1333) [2021-11-25 17:50:37,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4503 states to 4503 states and 6393 transitions. [2021-11-25 17:50:37,175 INFO L78 Accepts]: Start accepts. Automaton has 4503 states and 6393 transitions. Word has length 261 [2021-11-25 17:50:37,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:37,176 INFO L470 AbstractCegarLoop]: Abstraction has 4503 states and 6393 transitions. [2021-11-25 17:50:37,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 17:50:37,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4503 states and 6393 transitions. [2021-11-25 17:50:37,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-25 17:50:37,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:37,188 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:50:37,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 17:50:37,188 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 17:50:37,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:37,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1112247251, now seen corresponding path program 1 times [2021-11-25 17:50:37,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:37,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196309758] [2021-11-25 17:50:37,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:37,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2021-11-25 17:50:37,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:37,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196309758] [2021-11-25 17:50:37,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196309758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:37,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:37,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:50:37,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945203784] [2021-11-25 17:50:37,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:37,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:50:37,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:37,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:50:37,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:50:37,504 INFO L87 Difference]: Start difference. First operand 4503 states and 6393 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-25 17:50:41,663 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:41,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:41,912 INFO L93 Difference]: Finished difference Result 8342 states and 11693 transitions. [2021-11-25 17:50:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:50:41,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 269 [2021-11-25 17:50:41,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:41,954 INFO L225 Difference]: With dead ends: 8342 [2021-11-25 17:50:41,954 INFO L226 Difference]: Without dead ends: 3896 [2021-11-25 17:50:41,987 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 17:50:41,988 INFO L933 BasicCegarLoop]: 1793 mSDtfsCounter, 741 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:41,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 3318 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 541 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2021-11-25 17:50:41,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-11-25 17:50:42,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3866. [2021-11-25 17:50:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3866 states, 2360 states have (on average 1.298728813559322) internal successors, (3065), 2393 states have internal predecessors, (3065), 1126 states have call successors, (1126), 378 states have call predecessors, (1126), 377 states have return successors, (1122), 1104 states have call predecessors, (1122), 1122 states have call successors, (1122) [2021-11-25 17:50:42,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 5313 transitions. [2021-11-25 17:50:42,231 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 5313 transitions. Word has length 269 [2021-11-25 17:50:42,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:42,231 INFO L470 AbstractCegarLoop]: Abstraction has 3866 states and 5313 transitions. [2021-11-25 17:50:42,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-25 17:50:42,232 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 5313 transitions. [2021-11-25 17:50:42,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-11-25 17:50:42,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:42,238 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2021-11-25 17:50:42,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 17:50:42,239 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 17:50:42,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:42,240 INFO L85 PathProgramCache]: Analyzing trace with hash -807400372, now seen corresponding path program 1 times [2021-11-25 17:50:42,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:42,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255680148] [2021-11-25 17:50:42,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:42,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:42,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1538 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2021-11-25 17:50:42,671 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:42,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255680148] [2021-11-25 17:50:42,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255680148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:42,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:42,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:50:42,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031389780] [2021-11-25 17:50:42,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:42,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:50:42,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:42,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:50:42,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:50:42,676 INFO L87 Difference]: Start difference. First operand 3866 states and 5313 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 17:50:45,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:47,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:49,294 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:51,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:53,377 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:50:53,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:50:53,652 INFO L93 Difference]: Finished difference Result 3872 states and 5318 transitions. [2021-11-25 17:50:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:50:53,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 266 [2021-11-25 17:50:53,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:50:53,684 INFO L225 Difference]: With dead ends: 3872 [2021-11-25 17:50:53,685 INFO L226 Difference]: Without dead ends: 3870 [2021-11-25 17:50:53,687 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 17:50:53,691 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 1735 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 4676 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:50:53,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1742 Valid, 4676 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 734 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2021-11-25 17:50:53,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3870 states. [2021-11-25 17:50:53,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3870 to 3870. [2021-11-25 17:50:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3870 states, 2363 states have (on average 1.2983495556495979) internal successors, (3068), 2396 states have internal predecessors, (3068), 1126 states have call successors, (1126), 379 states have call predecessors, (1126), 378 states have return successors, (1122), 1104 states have call predecessors, (1122), 1122 states have call successors, (1122) [2021-11-25 17:50:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3870 states to 3870 states and 5316 transitions. [2021-11-25 17:50:53,915 INFO L78 Accepts]: Start accepts. Automaton has 3870 states and 5316 transitions. Word has length 266 [2021-11-25 17:50:53,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:50:53,915 INFO L470 AbstractCegarLoop]: Abstraction has 3870 states and 5316 transitions. [2021-11-25 17:50:53,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 17:50:53,916 INFO L276 IsEmpty]: Start isEmpty. Operand 3870 states and 5316 transitions. [2021-11-25 17:50:53,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-25 17:50:53,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:50:53,929 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 3, 2, 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] [2021-11-25 17:50:53,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 17:50:53,930 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 17:50:53,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:50:53,930 INFO L85 PathProgramCache]: Analyzing trace with hash 559639053, now seen corresponding path program 1 times [2021-11-25 17:50:53,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:50:53,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080656615] [2021-11-25 17:50:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:50:53,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:50:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:50:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1556 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2021-11-25 17:50:54,317 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:50:54,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080656615] [2021-11-25 17:50:54,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080656615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:50:54,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:50:54,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:50:54,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368926355] [2021-11-25 17:50:54,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:50:54,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:50:54,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:50:54,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:50:54,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:50:54,322 INFO L87 Difference]: Start difference. First operand 3870 states and 5316 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 17:50:57,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:01,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:01,209 INFO L93 Difference]: Finished difference Result 3876 states and 5321 transitions. [2021-11-25 17:51:01,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:51:01,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 271 [2021-11-25 17:51:01,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:01,243 INFO L225 Difference]: With dead ends: 3876 [2021-11-25 17:51:01,243 INFO L226 Difference]: Without dead ends: 3874 [2021-11-25 17:51:01,246 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 17:51:01,247 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 1735 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 4676 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:01,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1741 Valid, 4676 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-25 17:51:01,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3874 states. [2021-11-25 17:51:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3874 to 3874. [2021-11-25 17:51:01,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3874 states, 2366 states have (on average 1.297971259509721) internal successors, (3071), 2399 states have internal predecessors, (3071), 1126 states have call successors, (1126), 380 states have call predecessors, (1126), 379 states have return successors, (1122), 1104 states have call predecessors, (1122), 1122 states have call successors, (1122) [2021-11-25 17:51:01,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3874 states to 3874 states and 5319 transitions. [2021-11-25 17:51:01,486 INFO L78 Accepts]: Start accepts. Automaton has 3874 states and 5319 transitions. Word has length 271 [2021-11-25 17:51:01,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:01,487 INFO L470 AbstractCegarLoop]: Abstraction has 3874 states and 5319 transitions. [2021-11-25 17:51:01,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 17:51:01,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3874 states and 5319 transitions. [2021-11-25 17:51:01,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-25 17:51:01,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:01,497 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 4, 3, 3, 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] [2021-11-25 17:51:01,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 17:51:01,497 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 17:51:01,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:01,499 INFO L85 PathProgramCache]: Analyzing trace with hash 759251790, now seen corresponding path program 1 times [2021-11-25 17:51:01,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:01,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122803485] [2021-11-25 17:51:01,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:01,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:01,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1566 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2021-11-25 17:51:01,932 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:01,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122803485] [2021-11-25 17:51:01,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122803485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:01,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:01,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:51:01,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591859575] [2021-11-25 17:51:01,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:01,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:51:01,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:01,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:51:01,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:51:01,935 INFO L87 Difference]: Start difference. First operand 3874 states and 5319 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 17:51:04,444 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:06,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:10,708 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:12,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:14,265 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:15,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:15,039 INFO L93 Difference]: Finished difference Result 7366 states and 10137 transitions. [2021-11-25 17:51:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:51:15,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 276 [2021-11-25 17:51:15,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:15,098 INFO L225 Difference]: With dead ends: 7366 [2021-11-25 17:51:15,098 INFO L226 Difference]: Without dead ends: 7364 [2021-11-25 17:51:15,103 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 17:51:15,104 INFO L933 BasicCegarLoop]: 1932 mSDtfsCounter, 1735 mSDsluCounter, 6072 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 7288 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:15,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1740 Valid, 7288 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 970 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2021-11-25 17:51:15,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7364 states. [2021-11-25 17:51:15,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7364 to 7356. [2021-11-25 17:51:15,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7356 states, 4493 states have (on average 1.303360783440908) internal successors, (5856), 4559 states have internal predecessors, (5856), 2141 states have call successors, (2141), 721 states have call predecessors, (2141), 719 states have return successors, (2133), 2095 states have call predecessors, (2133), 2133 states have call successors, (2133) [2021-11-25 17:51:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7356 states to 7356 states and 10130 transitions. [2021-11-25 17:51:15,572 INFO L78 Accepts]: Start accepts. Automaton has 7356 states and 10130 transitions. Word has length 276 [2021-11-25 17:51:15,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:15,573 INFO L470 AbstractCegarLoop]: Abstraction has 7356 states and 10130 transitions. [2021-11-25 17:51:15,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-25 17:51:15,573 INFO L276 IsEmpty]: Start isEmpty. Operand 7356 states and 10130 transitions. [2021-11-25 17:51:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-25 17:51:15,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:15,580 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 5, 4, 4, 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] [2021-11-25 17:51:15,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 17:51:15,581 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 17:51:15,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:15,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2094849427, now seen corresponding path program 1 times [2021-11-25 17:51:15,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:15,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557992879] [2021-11-25 17:51:15,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:15,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1572 trivial. 0 not checked. [2021-11-25 17:51:15,975 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:15,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557992879] [2021-11-25 17:51:15,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557992879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:15,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:15,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:51:15,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805683844] [2021-11-25 17:51:15,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:15,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:51:15,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:15,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:51:15,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:51:15,979 INFO L87 Difference]: Start difference. First operand 7356 states and 10130 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 17:51:20,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:22,992 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-25 17:51:25,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:28,139 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:28,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:28,320 INFO L93 Difference]: Finished difference Result 7370 states and 10140 transitions. [2021-11-25 17:51:28,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:51:28,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 281 [2021-11-25 17:51:28,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:28,358 INFO L225 Difference]: With dead ends: 7370 [2021-11-25 17:51:28,359 INFO L226 Difference]: Without dead ends: 7368 [2021-11-25 17:51:28,364 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 17:51:28,365 INFO L933 BasicCegarLoop]: 1932 mSDtfsCounter, 1735 mSDsluCounter, 6071 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 7288 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:28,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 7288 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 969 Invalid, 3 Unknown, 0 Unchecked, 12.0s Time] [2021-11-25 17:51:28,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7368 states. [2021-11-25 17:51:28,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7368 to 7360. [2021-11-25 17:51:28,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7360 states, 4496 states have (on average 1.3031583629893237) internal successors, (5859), 4562 states have internal predecessors, (5859), 2141 states have call successors, (2141), 722 states have call predecessors, (2141), 720 states have return successors, (2133), 2095 states have call predecessors, (2133), 2133 states have call successors, (2133) [2021-11-25 17:51:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7360 states to 7360 states and 10133 transitions. [2021-11-25 17:51:28,948 INFO L78 Accepts]: Start accepts. Automaton has 7360 states and 10133 transitions. Word has length 281 [2021-11-25 17:51:28,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:28,949 INFO L470 AbstractCegarLoop]: Abstraction has 7360 states and 10133 transitions. [2021-11-25 17:51:28,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (34), 3 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-25 17:51:28,949 INFO L276 IsEmpty]: Start isEmpty. Operand 7360 states and 10133 transitions. [2021-11-25 17:51:28,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-25 17:51:28,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:28,956 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 6, 5, 5, 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] [2021-11-25 17:51:28,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 17:51:28,957 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 17:51:28,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:28,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1872229998, now seen corresponding path program 1 times [2021-11-25 17:51:28,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:28,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977835042] [2021-11-25 17:51:28,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:28,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:29,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1598 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1588 trivial. 0 not checked. [2021-11-25 17:51:29,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:29,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977835042] [2021-11-25 17:51:29,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977835042] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:29,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:29,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:51:29,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606545182] [2021-11-25 17:51:29,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:29,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:51:29,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:29,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:51:29,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:51:29,296 INFO L87 Difference]: Start difference. First operand 7360 states and 10133 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 17:51:31,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:37,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:37,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:37,661 INFO L93 Difference]: Finished difference Result 7370 states and 10142 transitions. [2021-11-25 17:51:37,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:51:37,662 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 286 [2021-11-25 17:51:37,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:37,699 INFO L225 Difference]: With dead ends: 7370 [2021-11-25 17:51:37,700 INFO L226 Difference]: Without dead ends: 7368 [2021-11-25 17:51:37,705 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 17:51:37,706 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 1735 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 4676 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:37,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1738 Valid, 4676 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2021-11-25 17:51:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7368 states. [2021-11-25 17:51:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7368 to 7368. [2021-11-25 17:51:38,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7368 states, 4502 states have (on average 1.302754331408263) internal successors, (5865), 4568 states have internal predecessors, (5865), 2141 states have call successors, (2141), 724 states have call predecessors, (2141), 722 states have return successors, (2133), 2095 states have call predecessors, (2133), 2133 states have call successors, (2133) [2021-11-25 17:51:38,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7368 states to 7368 states and 10139 transitions. [2021-11-25 17:51:38,273 INFO L78 Accepts]: Start accepts. Automaton has 7368 states and 10139 transitions. Word has length 286 [2021-11-25 17:51:38,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:38,274 INFO L470 AbstractCegarLoop]: Abstraction has 7368 states and 10139 transitions. [2021-11-25 17:51:38,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-25 17:51:38,275 INFO L276 IsEmpty]: Start isEmpty. Operand 7368 states and 10139 transitions. [2021-11-25 17:51:38,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-25 17:51:38,283 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:38,284 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 7, 6, 6, 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] [2021-11-25 17:51:38,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 17:51:38,284 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 17:51:38,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:38,285 INFO L85 PathProgramCache]: Analyzing trace with hash -606299025, now seen corresponding path program 1 times [2021-11-25 17:51:38,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:38,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205086193] [2021-11-25 17:51:38,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:38,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1608 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1596 trivial. 0 not checked. [2021-11-25 17:51:38,627 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:38,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205086193] [2021-11-25 17:51:38,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205086193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:38,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:38,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:51:38,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754235925] [2021-11-25 17:51:38,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:38,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:51:38,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:38,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:51:38,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:51:38,630 INFO L87 Difference]: Start difference. First operand 7368 states and 10139 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-25 17:51:43,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:47,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:48,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:48,195 INFO L93 Difference]: Finished difference Result 7432 states and 10197 transitions. [2021-11-25 17:51:48,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:51:48,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 291 [2021-11-25 17:51:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:48,230 INFO L225 Difference]: With dead ends: 7432 [2021-11-25 17:51:48,230 INFO L226 Difference]: Without dead ends: 7430 [2021-11-25 17:51:48,235 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 17:51:48,236 INFO L933 BasicCegarLoop]: 1564 mSDtfsCounter, 1717 mSDsluCounter, 3621 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 4701 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:48,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 4701 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 740 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2021-11-25 17:51:48,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7430 states. [2021-11-25 17:51:48,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7430 to 7428. [2021-11-25 17:51:48,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7428 states, 4544 states have (on average 1.3025968309859155) internal successors, (5919), 4610 states have internal predecessors, (5919), 2141 states have call successors, (2141), 742 states have call predecessors, (2141), 740 states have return successors, (2133), 2095 states have call predecessors, (2133), 2133 states have call successors, (2133) [2021-11-25 17:51:48,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7428 states to 7428 states and 10193 transitions. [2021-11-25 17:51:48,699 INFO L78 Accepts]: Start accepts. Automaton has 7428 states and 10193 transitions. Word has length 291 [2021-11-25 17:51:48,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:48,700 INFO L470 AbstractCegarLoop]: Abstraction has 7428 states and 10193 transitions. [2021-11-25 17:51:48,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-11-25 17:51:48,700 INFO L276 IsEmpty]: Start isEmpty. Operand 7428 states and 10193 transitions. [2021-11-25 17:51:48,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-25 17:51:48,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:48,710 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 8, 7, 7, 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] [2021-11-25 17:51:48,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 17:51:48,710 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 17:51:48,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:48,711 INFO L85 PathProgramCache]: Analyzing trace with hash -428674674, now seen corresponding path program 1 times [2021-11-25 17:51:48,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:48,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701129722] [2021-11-25 17:51:48,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:48,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1646 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1632 trivial. 0 not checked. [2021-11-25 17:51:49,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:49,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701129722] [2021-11-25 17:51:49,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701129722] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:49,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:49,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:51:49,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052298155] [2021-11-25 17:51:49,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:49,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:51:49,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:49,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:51:49,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:51:49,148 INFO L87 Difference]: Start difference. First operand 7428 states and 10193 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-25 17:51:52,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:56,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:59,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:51:59,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:59,316 INFO L93 Difference]: Finished difference Result 7467 states and 10221 transitions. [2021-11-25 17:51:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:51:59,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 296 [2021-11-25 17:51:59,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:59,352 INFO L225 Difference]: With dead ends: 7467 [2021-11-25 17:51:59,353 INFO L226 Difference]: Without dead ends: 7463 [2021-11-25 17:51:59,358 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 17:51:59,359 INFO L933 BasicCegarLoop]: 1569 mSDtfsCounter, 1723 mSDsluCounter, 3622 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 4707 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:59,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1724 Valid, 4707 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 740 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2021-11-25 17:51:59,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7463 states. [2021-11-25 17:51:59,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7463 to 7461. [2021-11-25 17:51:59,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7461 states, 4567 states have (on average 1.3008539522662579) internal successors, (5941), 4632 states have internal predecessors, (5941), 2141 states have call successors, (2141), 753 states have call predecessors, (2141), 750 states have return successors, (2133), 2095 states have call predecessors, (2133), 2133 states have call successors, (2133) [2021-11-25 17:52:00,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7461 states to 7461 states and 10215 transitions. [2021-11-25 17:52:00,006 INFO L78 Accepts]: Start accepts. Automaton has 7461 states and 10215 transitions. Word has length 296 [2021-11-25 17:52:00,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:00,007 INFO L470 AbstractCegarLoop]: Abstraction has 7461 states and 10215 transitions. [2021-11-25 17:52:00,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-25 17:52:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 7461 states and 10215 transitions. [2021-11-25 17:52:00,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-25 17:52:00,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:00,018 INFO L514 BasicCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 3, 3, 3, 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] [2021-11-25 17:52:00,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 17:52:00,018 INFO L402 AbstractCegarLoop]: === Iteration 13 === 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 17:52:00,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:00,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1415837264, now seen corresponding path program 1 times [2021-11-25 17:52:00,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:00,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386167482] [2021-11-25 17:52:00,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:00,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:00,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1597 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1590 trivial. 0 not checked. [2021-11-25 17:52:00,283 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:00,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386167482] [2021-11-25 17:52:00,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386167482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:00,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:00,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:52:00,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107800120] [2021-11-25 17:52:00,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:00,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:52:00,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:00,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:52:00,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:52:00,286 INFO L87 Difference]: Start difference. First operand 7461 states and 10215 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-25 17:52:03,634 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:07,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:07,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:07,457 INFO L93 Difference]: Finished difference Result 18020 states and 24720 transitions. [2021-11-25 17:52:07,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:52:07,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 302 [2021-11-25 17:52:07,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:07,518 INFO L225 Difference]: With dead ends: 18020 [2021-11-25 17:52:07,518 INFO L226 Difference]: Without dead ends: 10950 [2021-11-25 17:52:07,562 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 17:52:07,563 INFO L933 BasicCegarLoop]: 2924 mSDtfsCounter, 1654 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 4474 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:07,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1656 Valid, 4474 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 701 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2021-11-25 17:52:07,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10950 states. [2021-11-25 17:52:08,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10950 to 10796. [2021-11-25 17:52:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10796 states, 6620 states have (on average 1.3042296072507553) internal successors, (8634), 6720 states have internal predecessors, (8634), 3101 states have call successors, (3101), 1075 states have call predecessors, (3101), 1072 states have return successors, (3097), 3030 states have call predecessors, (3097), 3093 states have call successors, (3097) [2021-11-25 17:52:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10796 states to 10796 states and 14832 transitions. [2021-11-25 17:52:08,384 INFO L78 Accepts]: Start accepts. Automaton has 10796 states and 14832 transitions. Word has length 302 [2021-11-25 17:52:08,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:08,385 INFO L470 AbstractCegarLoop]: Abstraction has 10796 states and 14832 transitions. [2021-11-25 17:52:08,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-25 17:52:08,385 INFO L276 IsEmpty]: Start isEmpty. Operand 10796 states and 14832 transitions. [2021-11-25 17:52:08,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-11-25 17:52:08,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:08,397 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 9, 8, 8, 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] [2021-11-25 17:52:08,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 17:52:08,397 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 17:52:08,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:08,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1078091185, now seen corresponding path program 1 times [2021-11-25 17:52:08,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:08,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863078750] [2021-11-25 17:52:08,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:08,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1664 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1648 trivial. 0 not checked. [2021-11-25 17:52:08,727 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:08,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863078750] [2021-11-25 17:52:08,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863078750] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:08,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:08,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:52:08,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878783255] [2021-11-25 17:52:08,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:08,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:52:08,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:08,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:52:08,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:52:08,730 INFO L87 Difference]: Start difference. First operand 10796 states and 14832 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-25 17:52:15,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:15,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:15,891 INFO L93 Difference]: Finished difference Result 10810 states and 14849 transitions. [2021-11-25 17:52:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:52:15,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 301 [2021-11-25 17:52:15,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:15,949 INFO L225 Difference]: With dead ends: 10810 [2021-11-25 17:52:15,949 INFO L226 Difference]: Without dead ends: 10634 [2021-11-25 17:52:15,957 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 17:52:15,958 INFO L933 BasicCegarLoop]: 1565 mSDtfsCounter, 1725 mSDsluCounter, 3608 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 4689 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:15,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1727 Valid, 4689 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-11-25 17:52:15,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10634 states. [2021-11-25 17:52:16,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10634 to 10630. [2021-11-25 17:52:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10630 states, 6539 states have (on average 1.3043278788805628) internal successors, (8529), 6618 states have internal predecessors, (8529), 3043 states have call successors, (3043), 1044 states have call predecessors, (3043), 1045 states have return successors, (3047), 2991 states have call predecessors, (3047), 3039 states have call successors, (3047) [2021-11-25 17:52:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10630 states to 10630 states and 14619 transitions. [2021-11-25 17:52:16,941 INFO L78 Accepts]: Start accepts. Automaton has 10630 states and 14619 transitions. Word has length 301 [2021-11-25 17:52:16,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:16,943 INFO L470 AbstractCegarLoop]: Abstraction has 10630 states and 14619 transitions. [2021-11-25 17:52:16,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-25 17:52:16,943 INFO L276 IsEmpty]: Start isEmpty. Operand 10630 states and 14619 transitions. [2021-11-25 17:52:16,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-11-25 17:52:16,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:16,956 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 5, 5, 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] [2021-11-25 17:52:16,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 17:52:16,957 INFO L402 AbstractCegarLoop]: === Iteration 15 === 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 17:52:16,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:16,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1054557414, now seen corresponding path program 1 times [2021-11-25 17:52:16,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:16,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463630362] [2021-11-25 17:52:16,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:16,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:17,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1599 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1599 trivial. 0 not checked. [2021-11-25 17:52:17,246 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:17,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463630362] [2021-11-25 17:52:17,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463630362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:17,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:17,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:52:17,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709689432] [2021-11-25 17:52:17,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:17,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:52:17,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:17,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:52:17,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:52:17,249 INFO L87 Difference]: Start difference. First operand 10630 states and 14619 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-25 17:52:23,397 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:23,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:23,919 INFO L93 Difference]: Finished difference Result 29202 states and 40315 transitions. [2021-11-25 17:52:23,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:52:23,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 319 [2021-11-25 17:52:23,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:24,010 INFO L225 Difference]: With dead ends: 29202 [2021-11-25 17:52:24,011 INFO L226 Difference]: Without dead ends: 18629 [2021-11-25 17:52:24,055 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 17:52:24,056 INFO L933 BasicCegarLoop]: 1907 mSDtfsCounter, 1617 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 3440 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:24,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1619 Valid, 3440 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 518 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-11-25 17:52:24,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18629 states. [2021-11-25 17:52:25,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18629 to 18429. [2021-11-25 17:52:25,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18429 states, 11489 states have (on average 1.3096875271999304) internal successors, (15047), 11661 states have internal predecessors, (15047), 5176 states have call successors, (5176), 1760 states have call predecessors, (5176), 1761 states have return successors, (5192), 5053 states have call predecessors, (5192), 5172 states have call successors, (5192) [2021-11-25 17:52:25,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18429 states to 18429 states and 25415 transitions. [2021-11-25 17:52:25,619 INFO L78 Accepts]: Start accepts. Automaton has 18429 states and 25415 transitions. Word has length 319 [2021-11-25 17:52:25,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:25,620 INFO L470 AbstractCegarLoop]: Abstraction has 18429 states and 25415 transitions. [2021-11-25 17:52:25,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-25 17:52:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand 18429 states and 25415 transitions. [2021-11-25 17:52:25,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-25 17:52:25,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:25,640 INFO L514 BasicCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 4, 4, 4, 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] [2021-11-25 17:52:25,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 17:52:25,641 INFO L402 AbstractCegarLoop]: === Iteration 16 === 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 17:52:25,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:25,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1819870199, now seen corresponding path program 1 times [2021-11-25 17:52:25,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:25,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212605969] [2021-11-25 17:52:25,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:25,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1709 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1695 trivial. 0 not checked. [2021-11-25 17:52:25,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:25,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212605969] [2021-11-25 17:52:25,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212605969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:25,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:25,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:52:25,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068900062] [2021-11-25 17:52:25,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:25,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:52:25,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:25,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:52:25,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:52:25,956 INFO L87 Difference]: Start difference. First operand 18429 states and 25415 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 17:52:34,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:36,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:40,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:43,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:45,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:46,619 INFO L93 Difference]: Finished difference Result 42709 states and 58915 transitions. [2021-11-25 17:52:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:52:46,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) Word has length 317 [2021-11-25 17:52:46,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:46,741 INFO L225 Difference]: With dead ends: 42709 [2021-11-25 17:52:46,742 INFO L226 Difference]: Without dead ends: 24385 [2021-11-25 17:52:46,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:52:46,819 INFO L933 BasicCegarLoop]: 2990 mSDtfsCounter, 1645 mSDsluCounter, 8662 mSDsCounter, 0 mSdLazyCounter, 1621 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 10514 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1621 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:46,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1645 Valid, 10514 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1621 Invalid, 4 Unknown, 0 Unchecked, 19.2s Time] [2021-11-25 17:52:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24385 states. [2021-11-25 17:52:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24385 to 24304. [2021-11-25 17:52:48,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24304 states, 15125 states have (on average 1.3096198347107437) internal successors, (19808), 15358 states have internal predecessors, (19808), 6850 states have call successors, (6850), 2315 states have call predecessors, (6850), 2326 states have return successors, (6882), 6691 states have call predecessors, (6882), 6846 states have call successors, (6882) [2021-11-25 17:52:48,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24304 states to 24304 states and 33540 transitions. [2021-11-25 17:52:48,516 INFO L78 Accepts]: Start accepts. Automaton has 24304 states and 33540 transitions. Word has length 317 [2021-11-25 17:52:48,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:48,516 INFO L470 AbstractCegarLoop]: Abstraction has 24304 states and 33540 transitions. [2021-11-25 17:52:48,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-25 17:52:48,517 INFO L276 IsEmpty]: Start isEmpty. Operand 24304 states and 33540 transitions. [2021-11-25 17:52:48,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-25 17:52:48,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:48,538 INFO L514 BasicCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 4, 4, 4, 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] [2021-11-25 17:52:48,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 17:52:48,538 INFO L402 AbstractCegarLoop]: === Iteration 17 === 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 17:52:48,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:48,539 INFO L85 PathProgramCache]: Analyzing trace with hash 288077422, now seen corresponding path program 1 times [2021-11-25 17:52:48,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:48,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369024196] [2021-11-25 17:52:48,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:48,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1709 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1709 trivial. 0 not checked. [2021-11-25 17:52:49,154 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:49,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369024196] [2021-11-25 17:52:49,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369024196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:49,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:49,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:52:49,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138787254] [2021-11-25 17:52:49,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:49,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:52:49,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:49,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:52:49,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:52:49,157 INFO L87 Difference]: Start difference. First operand 24304 states and 33540 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-25 17:52:52,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:54,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:58,988 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:52:59,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:59,544 INFO L93 Difference]: Finished difference Result 24372 states and 33606 transitions. [2021-11-25 17:52:59,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:52:59,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 318 [2021-11-25 17:52:59,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:59,638 INFO L225 Difference]: With dead ends: 24372 [2021-11-25 17:52:59,638 INFO L226 Difference]: Without dead ends: 24370 [2021-11-25 17:52:59,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 17:52:59,651 INFO L933 BasicCegarLoop]: 1558 mSDtfsCounter, 1700 mSDsluCounter, 3613 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:59,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 4687 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 734 Invalid, 1 Unknown, 0 Unchecked, 9.1s Time] [2021-11-25 17:52:59,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24370 states. [2021-11-25 17:53:01,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24370 to 24368. [2021-11-25 17:53:01,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24368 states, 15173 states have (on average 1.3079812825413564) internal successors, (19846), 15406 states have internal predecessors, (19846), 6850 states have call successors, (6850), 2331 states have call predecessors, (6850), 2342 states have return successors, (6882), 6691 states have call predecessors, (6882), 6846 states have call successors, (6882) [2021-11-25 17:53:01,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24368 states to 24368 states and 33578 transitions. [2021-11-25 17:53:01,161 INFO L78 Accepts]: Start accepts. Automaton has 24368 states and 33578 transitions. Word has length 318 [2021-11-25 17:53:01,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:53:01,162 INFO L470 AbstractCegarLoop]: Abstraction has 24368 states and 33578 transitions. [2021-11-25 17:53:01,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-25 17:53:01,162 INFO L276 IsEmpty]: Start isEmpty. Operand 24368 states and 33578 transitions. [2021-11-25 17:53:01,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-11-25 17:53:01,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:01,346 INFO L514 BasicCegarLoop]: trace histogram [25, 20, 20, 20, 20, 20, 20, 6, 6, 3, 3, 3, 2, 2, 2, 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] [2021-11-25 17:53:01,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 17:53:01,346 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 17:53:01,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:01,347 INFO L85 PathProgramCache]: Analyzing trace with hash 346457418, now seen corresponding path program 1 times [2021-11-25 17:53:01,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:01,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779937056] [2021-11-25 17:53:01,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:01,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1812 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1805 trivial. 0 not checked. [2021-11-25 17:53:01,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:01,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779937056] [2021-11-25 17:53:01,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779937056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:53:01,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:53:01,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:53:01,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634080172] [2021-11-25 17:53:01,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:53:01,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:53:01,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:01,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:53:01,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:53:01,647 INFO L87 Difference]: Start difference. First operand 24368 states and 33578 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-25 17:53:05,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:53:08,156 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:53:09,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:53:09,511 INFO L93 Difference]: Finished difference Result 54709 states and 75041 transitions. [2021-11-25 17:53:09,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:53:09,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 346 [2021-11-25 17:53:09,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:53:09,657 INFO L225 Difference]: With dead ends: 54709 [2021-11-25 17:53:09,657 INFO L226 Difference]: Without dead ends: 30446 [2021-11-25 17:53:09,747 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 17:53:09,748 INFO L933 BasicCegarLoop]: 2172 mSDtfsCounter, 758 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 3660 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:53:09,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 3660 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-25 17:53:09,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30446 states. [2021-11-25 17:53:11,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30446 to 30310. [2021-11-25 17:53:11,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30310 states, 18799 states have (on average 1.2954944411936806) internal successors, (24354), 19124 states have internal predecessors, (24354), 8456 states have call successors, (8456), 3037 states have call predecessors, (8456), 3052 states have return successors, (8492), 8213 states have call predecessors, (8492), 8452 states have call successors, (8492) [2021-11-25 17:53:11,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30310 states to 30310 states and 41302 transitions. [2021-11-25 17:53:11,499 INFO L78 Accepts]: Start accepts. Automaton has 30310 states and 41302 transitions. Word has length 346 [2021-11-25 17:53:11,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:53:11,499 INFO L470 AbstractCegarLoop]: Abstraction has 30310 states and 41302 transitions. [2021-11-25 17:53:11,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-25 17:53:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand 30310 states and 41302 transitions. [2021-11-25 17:53:11,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-11-25 17:53:11,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:11,516 INFO L514 BasicCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:53:11,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 17:53:11,517 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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 17:53:11,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:11,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1704405829, now seen corresponding path program 1 times [2021-11-25 17:53:11,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:11,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963770419] [2021-11-25 17:53:11,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:11,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:12,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1715 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1715 trivial. 0 not checked. [2021-11-25 17:53:12,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:12,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963770419] [2021-11-25 17:53:12,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963770419] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:53:12,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:53:12,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:53:12,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266277053] [2021-11-25 17:53:12,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:53:12,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:53:12,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:12,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:53:12,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:53:12,089 INFO L87 Difference]: Start difference. First operand 30310 states and 41302 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-25 17:53:17,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:53:20,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:53:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:53:20,973 INFO L93 Difference]: Finished difference Result 30312 states and 41303 transitions. [2021-11-25 17:53:20,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:53:20,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 335 [2021-11-25 17:53:20,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:53:21,141 INFO L225 Difference]: With dead ends: 30312 [2021-11-25 17:53:21,141 INFO L226 Difference]: Without dead ends: 30310 [2021-11-25 17:53:21,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:53:21,160 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 16 mSDsluCounter, 5367 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6205 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:53:21,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 6205 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 967 Invalid, 1 Unknown, 0 Unchecked, 7.7s Time] [2021-11-25 17:53:21,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30310 states. [2021-11-25 17:53:22,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30310 to 30310. [2021-11-25 17:53:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30310 states, 18799 states have (on average 1.2935794457151977) internal successors, (24318), 19124 states have internal predecessors, (24318), 8456 states have call successors, (8456), 3037 states have call predecessors, (8456), 3052 states have return successors, (8492), 8213 states have call predecessors, (8492), 8452 states have call successors, (8492) [2021-11-25 17:53:22,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30310 states to 30310 states and 41266 transitions. [2021-11-25 17:53:22,922 INFO L78 Accepts]: Start accepts. Automaton has 30310 states and 41266 transitions. Word has length 335 [2021-11-25 17:53:22,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:53:22,923 INFO L470 AbstractCegarLoop]: Abstraction has 30310 states and 41266 transitions. [2021-11-25 17:53:22,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (42), 3 states have call predecessors, (42), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-25 17:53:22,923 INFO L276 IsEmpty]: Start isEmpty. Operand 30310 states and 41266 transitions. [2021-11-25 17:53:23,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2021-11-25 17:53:23,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:23,189 INFO L514 BasicCegarLoop]: trace histogram [27, 24, 24, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 2, 2, 2, 2, 2, 2, 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] [2021-11-25 17:53:23,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 17:53:23,189 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-25 17:53:23,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:23,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1563397190, now seen corresponding path program 1 times [2021-11-25 17:53:23,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:23,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649727636] [2021-11-25 17:53:23,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:23,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3205 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3205 trivial. 0 not checked. [2021-11-25 17:53:23,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:23,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649727636] [2021-11-25 17:53:23,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649727636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:53:23,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:53:23,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:53:23,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324136702] [2021-11-25 17:53:23,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:53:23,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:53:23,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:23,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:53:23,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:53:23,871 INFO L87 Difference]: Start difference. First operand 30310 states and 41266 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 17:53:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:53:31,012 INFO L93 Difference]: Finished difference Result 30310 states and 41266 transitions. [2021-11-25 17:53:31,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:53:31,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 522 [2021-11-25 17:53:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:53:31,102 INFO L225 Difference]: With dead ends: 30310 [2021-11-25 17:53:31,102 INFO L226 Difference]: Without dead ends: 30308 [2021-11-25 17:53:31,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 17:53:31,113 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 1655 mSDsluCounter, 3609 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 4679 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:53:31,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1657 Valid, 4679 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-11-25 17:53:31,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30308 states. [2021-11-25 17:53:32,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30308 to 30308. [2021-11-25 17:53:32,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30308 states, 18798 states have (on average 1.2927439089264816) internal successors, (24301), 19122 states have internal predecessors, (24301), 8456 states have call successors, (8456), 3037 states have call predecessors, (8456), 3052 states have return successors, (8492), 8213 states have call predecessors, (8492), 8452 states have call successors, (8492) [2021-11-25 17:53:32,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30308 states to 30308 states and 41249 transitions. [2021-11-25 17:53:32,641 INFO L78 Accepts]: Start accepts. Automaton has 30308 states and 41249 transitions. Word has length 522 [2021-11-25 17:53:32,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:53:32,643 INFO L470 AbstractCegarLoop]: Abstraction has 30308 states and 41249 transitions. [2021-11-25 17:53:32,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (49), 3 states have call predecessors, (49), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2021-11-25 17:53:32,643 INFO L276 IsEmpty]: Start isEmpty. Operand 30308 states and 41249 transitions. [2021-11-25 17:53:32,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2021-11-25 17:53:32,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:32,693 INFO L514 BasicCegarLoop]: trace histogram [27, 25, 25, 20, 20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 4, 4, 4, 2, 2, 2, 2, 2, 2, 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] [2021-11-25 17:53:32,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 17:53:32,693 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_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 17:53:32,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:32,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1889553389, now seen corresponding path program 1 times [2021-11-25 17:53:32,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:32,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009940105] [2021-11-25 17:53:32,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:32,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3277 trivial. 0 not checked. [2021-11-25 17:53:33,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:33,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009940105] [2021-11-25 17:53:33,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009940105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:53:33,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:53:33,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 17:53:33,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040869096] [2021-11-25 17:53:33,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:53:33,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:53:33,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:33,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:53:33,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:53:33,030 INFO L87 Difference]: Start difference. First operand 30308 states and 41249 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-25 17:53:40,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:53:42,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:53:43,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:53:43,421 INFO L93 Difference]: Finished difference Result 30308 states and 41249 transitions. [2021-11-25 17:53:43,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:53:43,422 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 540 [2021-11-25 17:53:43,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:53:43,549 INFO L225 Difference]: With dead ends: 30308 [2021-11-25 17:53:43,549 INFO L226 Difference]: Without dead ends: 30306 [2021-11-25 17:53:43,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:53:43,563 INFO L933 BasicCegarLoop]: 1557 mSDtfsCounter, 24 mSDsluCounter, 5362 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 6200 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:53:43,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 6200 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 971 Invalid, 1 Unknown, 0 Unchecked, 8.9s Time] [2021-11-25 17:53:43,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30306 states. [2021-11-25 17:53:45,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30306 to 30306. [2021-11-25 17:53:45,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30306 states, 18797 states have (on average 1.2919082832366866) internal successors, (24284), 19120 states have internal predecessors, (24284), 8456 states have call successors, (8456), 3037 states have call predecessors, (8456), 3052 states have return successors, (8492), 8213 states have call predecessors, (8492), 8452 states have call successors, (8492) [2021-11-25 17:53:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30306 states to 30306 states and 41232 transitions. [2021-11-25 17:53:45,223 INFO L78 Accepts]: Start accepts. Automaton has 30306 states and 41232 transitions. Word has length 540 [2021-11-25 17:53:45,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:53:45,224 INFO L470 AbstractCegarLoop]: Abstraction has 30306 states and 41232 transitions. [2021-11-25 17:53:45,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-25 17:53:45,225 INFO L276 IsEmpty]: Start isEmpty. Operand 30306 states and 41232 transitions. [2021-11-25 17:53:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2021-11-25 17:53:45,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:45,276 INFO L514 BasicCegarLoop]: trace histogram [28, 21, 21, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2021-11-25 17:53:45,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 17:53:45,276 INFO L402 AbstractCegarLoop]: === Iteration 22 === 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 17:53:45,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:45,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1456663956, now seen corresponding path program 1 times [2021-11-25 17:53:45,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:45,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975721232] [2021-11-25 17:53:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:45,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:45,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2939 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 2902 trivial. 0 not checked. [2021-11-25 17:53:45,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:45,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975721232] [2021-11-25 17:53:45,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975721232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:53:45,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:53:45,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:53:45,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937432507] [2021-11-25 17:53:45,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:53:45,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:53:45,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:45,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:53:45,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:53:45,721 INFO L87 Difference]: Start difference. First operand 30306 states and 41232 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-25 17:53:50,185 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:53:53,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:53:55,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:53:55,520 INFO L93 Difference]: Finished difference Result 81301 states and 115228 transitions. [2021-11-25 17:53:55,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:53:55,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 533 [2021-11-25 17:53:55,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:53:55,889 INFO L225 Difference]: With dead ends: 81301 [2021-11-25 17:53:55,889 INFO L226 Difference]: Without dead ends: 51100 [2021-11-25 17:53:55,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:53:55,976 INFO L933 BasicCegarLoop]: 2331 mSDtfsCounter, 1184 mSDsluCounter, 4444 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 316 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 6205 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-25 17:53:55,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1343 Valid, 6205 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 928 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-11-25 17:53:56,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51100 states. [2021-11-25 17:53:58,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51100 to 30338. [2021-11-25 17:53:58,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30338 states, 18829 states have (on average 1.2914121833342185) internal successors, (24316), 19152 states have internal predecessors, (24316), 8456 states have call successors, (8456), 3037 states have call predecessors, (8456), 3052 states have return successors, (8492), 8213 states have call predecessors, (8492), 8452 states have call successors, (8492) [2021-11-25 17:53:58,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30338 states to 30338 states and 41264 transitions. [2021-11-25 17:53:58,299 INFO L78 Accepts]: Start accepts. Automaton has 30338 states and 41264 transitions. Word has length 533 [2021-11-25 17:53:58,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:53:58,301 INFO L470 AbstractCegarLoop]: Abstraction has 30338 states and 41264 transitions. [2021-11-25 17:53:58,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-25 17:53:58,301 INFO L276 IsEmpty]: Start isEmpty. Operand 30338 states and 41264 transitions. [2021-11-25 17:53:58,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2021-11-25 17:53:58,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:58,370 INFO L514 BasicCegarLoop]: trace histogram [28, 21, 21, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2021-11-25 17:53:58,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 17:53:58,371 INFO L402 AbstractCegarLoop]: === Iteration 23 === 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 17:53:58,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:58,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1180038115, now seen corresponding path program 1 times [2021-11-25 17:53:58,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:58,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515476907] [2021-11-25 17:53:58,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:58,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:59,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2939 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 2902 trivial. 0 not checked. [2021-11-25 17:53:59,044 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:59,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515476907] [2021-11-25 17:53:59,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515476907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:53:59,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:53:59,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:53:59,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932218143] [2021-11-25 17:53:59,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:53:59,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:53:59,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:59,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:53:59,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:53:59,049 INFO L87 Difference]: Start difference. First operand 30338 states and 41264 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-25 17:54:03,683 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:54:07,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:54:11,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:11,140 INFO L93 Difference]: Finished difference Result 66631 states and 95277 transitions. [2021-11-25 17:54:11,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:54:11,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 553 [2021-11-25 17:54:11,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:11,377 INFO L225 Difference]: With dead ends: 66631 [2021-11-25 17:54:11,377 INFO L226 Difference]: Without dead ends: 51292 [2021-11-25 17:54:11,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:54:11,426 INFO L933 BasicCegarLoop]: 2344 mSDtfsCounter, 1193 mSDsluCounter, 4458 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 6230 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:11,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1354 Valid, 6230 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2021-11-25 17:54:11,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51292 states. [2021-11-25 17:54:13,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51292 to 30370. [2021-11-25 17:54:13,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30370 states, 18861 states have (on average 1.290917766820423) internal successors, (24348), 19184 states have internal predecessors, (24348), 8456 states have call successors, (8456), 3037 states have call predecessors, (8456), 3052 states have return successors, (8492), 8213 states have call predecessors, (8492), 8452 states have call successors, (8492) [2021-11-25 17:54:13,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30370 states to 30370 states and 41296 transitions. [2021-11-25 17:54:13,802 INFO L78 Accepts]: Start accepts. Automaton has 30370 states and 41296 transitions. Word has length 553 [2021-11-25 17:54:13,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:13,803 INFO L470 AbstractCegarLoop]: Abstraction has 30370 states and 41296 transitions. [2021-11-25 17:54:13,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2021-11-25 17:54:13,803 INFO L276 IsEmpty]: Start isEmpty. Operand 30370 states and 41296 transitions. [2021-11-25 17:54:13,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2021-11-25 17:54:13,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:13,868 INFO L514 BasicCegarLoop]: trace histogram [28, 20, 20, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-25 17:54:13,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 17:54:13,869 INFO L402 AbstractCegarLoop]: === Iteration 24 === 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 17:54:13,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:13,870 INFO L85 PathProgramCache]: Analyzing trace with hash -266626886, now seen corresponding path program 1 times [2021-11-25 17:54:13,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:13,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670069482] [2021-11-25 17:54:13,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:13,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2884 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 2855 trivial. 0 not checked. [2021-11-25 17:54:14,387 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:14,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670069482] [2021-11-25 17:54:14,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670069482] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:14,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:14,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:54:14,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696216099] [2021-11-25 17:54:14,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:14,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:54:14,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:14,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:54:14,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:54:14,391 INFO L87 Difference]: Start difference. First operand 30370 states and 41296 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 17:54:18,365 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:54:20,869 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:54:24,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:54:25,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:25,499 INFO L93 Difference]: Finished difference Result 84567 states and 115260 transitions. [2021-11-25 17:54:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:54:25,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 574 [2021-11-25 17:54:25,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:25,763 INFO L225 Difference]: With dead ends: 84567 [2021-11-25 17:54:25,763 INFO L226 Difference]: Without dead ends: 54302 [2021-11-25 17:54:26,016 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 17:54:26,016 INFO L933 BasicCegarLoop]: 2339 mSDtfsCounter, 1482 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:26,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 3868 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 617 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-11-25 17:54:26,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54302 states. [2021-11-25 17:54:29,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54302 to 54302. [2021-11-25 17:54:29,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54302 states, 34191 states have (on average 1.2915094615542102) internal successors, (44158), 34578 states have internal predecessors, (44158), 14786 states have call successors, (14786), 5293 states have call predecessors, (14786), 5324 states have return successors, (14862), 14543 states have call predecessors, (14862), 14782 states have call successors, (14862) [2021-11-25 17:54:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54302 states to 54302 states and 73806 transitions. [2021-11-25 17:54:29,721 INFO L78 Accepts]: Start accepts. Automaton has 54302 states and 73806 transitions. Word has length 574 [2021-11-25 17:54:29,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:29,721 INFO L470 AbstractCegarLoop]: Abstraction has 54302 states and 73806 transitions. [2021-11-25 17:54:29,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 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 17:54:29,722 INFO L276 IsEmpty]: Start isEmpty. Operand 54302 states and 73806 transitions. [2021-11-25 17:54:29,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2021-11-25 17:54:29,815 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:29,816 INFO L514 BasicCegarLoop]: trace histogram [29, 21, 21, 20, 20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-25 17:54:29,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 17:54:29,816 INFO L402 AbstractCegarLoop]: === Iteration 25 === 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 17:54:29,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:29,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1573039759, now seen corresponding path program 1 times [2021-11-25 17:54:29,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:29,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455938322] [2021-11-25 17:54:29,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:29,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:30,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3033 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 2992 trivial. 0 not checked. [2021-11-25 17:54:30,628 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:30,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455938322] [2021-11-25 17:54:30,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455938322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:54:30,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:54:30,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:54:30,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637411230] [2021-11-25 17:54:30,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:54:30,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:54:30,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:30,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:54:30,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:54:30,631 INFO L87 Difference]: Start difference. First operand 54302 states and 73806 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) [2021-11-25 17:54:39,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 17:54:40,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:40,837 INFO L93 Difference]: Finished difference Result 132305 states and 180114 transitions. [2021-11-25 17:54:40,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:54:40,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 3 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (58), 3 states have call predecessors, (58), 3 states have call successors, (58) Word has length 592 [2021-11-25 17:54:40,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:41,238 INFO L225 Difference]: With dead ends: 132305 [2021-11-25 17:54:41,238 INFO L226 Difference]: Without dead ends: 78108 [2021-11-25 17:54:41,418 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 17:54:41,419 INFO L933 BasicCegarLoop]: 2579 mSDtfsCounter, 1471 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 4108 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:41,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1473 Valid, 4108 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 664 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2021-11-25 17:54:41,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78108 states.