./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P --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 2a992b8f7caf2083ee3b7e2acdd5fd118d6f91728d6dd0ef901811e301ef25da --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:07:21,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:07:21,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:07:21,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:07:21,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:07:21,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:07:21,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:07:21,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:07:21,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:07:21,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:07:21,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:07:21,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:07:21,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:07:21,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:07:21,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:07:21,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:07:21,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:07:21,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:07:21,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:07:21,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:07:21,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:07:21,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:07:21,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:07:21,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:07:21,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:07:21,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:07:21,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:07:21,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:07:21,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:07:21,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:07:21,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:07:21,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:07:21,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:07:21,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:07:21,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:07:21,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:07:21,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:07:21,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:07:21,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:07:21,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:07:21,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:07:21,900 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:07:21,926 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:07:21,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:07:21,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:07:21,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:07:21,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:07:21,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:07:21,929 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:07:21,929 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:07:21,929 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:07:21,930 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:07:21,930 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:07:21,930 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:07:21,931 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:07:21,931 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:07:21,931 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:07:21,931 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:07:21,932 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:07:21,932 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:07:21,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:07:21,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:07:21,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:07:21,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:07:21,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:07:21,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:07:21,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:07:21,935 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:07:21,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:07:21,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:07:21,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:07:21,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:07:21,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:07:21,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:07:21,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:07:21,937 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:07:21,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:07:21,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:07:21,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:07:21,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:07:21,938 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_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a992b8f7caf2083ee3b7e2acdd5fd118d6f91728d6dd0ef901811e301ef25da [2021-11-21 00:07:22,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:07:22,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:07:22,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:07:22,227 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:07:22,228 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:07:22,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i [2021-11-21 00:07:22,314 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P/data/b681fcb22/f338f3f1c341427dabddaf18ecf93a68/FLAGa03270714 [2021-11-21 00:07:23,217 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:07:23,217 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i [2021-11-21 00:07:23,264 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P/data/b681fcb22/f338f3f1c341427dabddaf18ecf93a68/FLAGa03270714 [2021-11-21 00:07:23,637 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P/data/b681fcb22/f338f3f1c341427dabddaf18ecf93a68 [2021-11-21 00:07:23,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:07:23,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:07:23,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:07:23,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:07:23,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:07:23,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:07:23" (1/1) ... [2021-11-21 00:07:23,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35179fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:23, skipping insertion in model container [2021-11-21 00:07:23,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:07:23" (1/1) ... [2021-11-21 00:07:23,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:07:23,849 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:07:27,397 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_9d9188f3-dde3-4261-bba2-62f73887dbd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375187,375200] [2021-11-21 00:07:27,400 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_9d9188f3-dde3-4261-bba2-62f73887dbd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375356,375369] [2021-11-21 00:07:27,401 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_9d9188f3-dde3-4261-bba2-62f73887dbd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375523,375536] [2021-11-21 00:07:27,401 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_9d9188f3-dde3-4261-bba2-62f73887dbd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375691,375704] [2021-11-21 00:07:27,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:07:27,452 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:07:27,976 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_9d9188f3-dde3-4261-bba2-62f73887dbd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375187,375200] [2021-11-21 00:07:27,977 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_9d9188f3-dde3-4261-bba2-62f73887dbd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375356,375369] [2021-11-21 00:07:27,978 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_9d9188f3-dde3-4261-bba2-62f73887dbd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375523,375536] [2021-11-21 00:07:27,978 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_9d9188f3-dde3-4261-bba2-62f73887dbd8/sv-benchmarks/c/ldv-challenges/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i[375691,375704] [2021-11-21 00:07:27,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:07:28,223 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:07:28,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:28 WrapperNode [2021-11-21 00:07:28,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:07:28,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:07:28,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:07:28,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:07:28,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:28" (1/1) ... [2021-11-21 00:07:28,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:28" (1/1) ... [2021-11-21 00:07:28,594 INFO L137 Inliner]: procedures = 451, calls = 2315, calls flagged for inlining = 231, calls inlined = 218, statements flattened = 6436 [2021-11-21 00:07:28,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:07:28,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:07:28,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:07:28,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:07:28,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:28" (1/1) ... [2021-11-21 00:07:28,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:28" (1/1) ... [2021-11-21 00:07:28,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:28" (1/1) ... [2021-11-21 00:07:28,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:28" (1/1) ... [2021-11-21 00:07:28,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:28" (1/1) ... [2021-11-21 00:07:28,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:28" (1/1) ... [2021-11-21 00:07:28,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:28" (1/1) ... [2021-11-21 00:07:29,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:07:29,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:07:29,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:07:29,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:07:29,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:28" (1/1) ... [2021-11-21 00:07:29,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:07:29,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:07:29,053 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:07:29,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d9188f3-dde3-4261-bba2-62f73887dbd8/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:07:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure softing_reset_chip [2021-11-21 00:07:29,106 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_reset_chip [2021-11-21 00:07:29,106 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-21 00:07:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_spin_of_softing [2021-11-21 00:07:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_spin_of_softing [2021-11-21 00:07:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:07:29,107 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:07:29,107 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-21 00:07:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-21 00:07:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:07:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:07:29,108 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-21 00:07:29,108 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-21 00:07:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2021-11-21 00:07:29,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2021-11-21 00:07:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure usleep_range [2021-11-21 00:07:29,109 INFO L138 BoogieDeclarations]: Found implementation of procedure usleep_range [2021-11-21 00:07:29,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 00:07:29,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 00:07:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_toio [2021-11-21 00:07:29,110 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_toio [2021-11-21 00:07:29,110 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-21 00:07:29,110 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-21 00:07:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-21 00:07:29,111 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-21 00:07:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_get [2021-11-21 00:07:29,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_get [2021-11-21 00:07:29,111 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 00:07:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure softing_fct_cmd [2021-11-21 00:07:29,112 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_fct_cmd [2021-11-21 00:07:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:07:29,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:07:29,112 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-21 00:07:29,112 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-21 00:07:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure canif_is_active [2021-11-21 00:07:29,113 INFO L138 BoogieDeclarations]: Found implementation of procedure canif_is_active [2021-11-21 00:07:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:07:29,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:07:29,113 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2021-11-21 00:07:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2021-11-21 00:07:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:07:29,114 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2021-11-21 00:07:29,114 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2021-11-21 00:07:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_open [2021-11-21 00:07:29,120 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_open [2021-11-21 00:07:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-21 00:07:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-21 00:07:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:07:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-21 00:07:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-21 00:07:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:07:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:07:29,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:07:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:07:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:07:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:07:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure open_candev [2021-11-21 00:07:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure open_candev [2021-11-21 00:07:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:07:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:07:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_rx [2021-11-21 00:07:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_rx [2021-11-21 00:07:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 00:07:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 00:07:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:07:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 00:07:29,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 00:07:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:07:29,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:07:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 00:07:29,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 00:07:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure softing_card_shutdown [2021-11-21 00:07:29,129 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_card_shutdown [2021-11-21 00:07:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:07:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:07:29,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:07:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:07:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-21 00:07:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-21 00:07:29,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-21 00:07:29,131 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:07:29,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 00:07:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_set [2021-11-21 00:07:29,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_set [2021-11-21 00:07:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_cleanup [2021-11-21 00:07:29,133 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_cleanup [2021-11-21 00:07:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:07:29,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-21 00:07:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure softing_startstop [2021-11-21 00:07:29,134 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_startstop [2021-11-21 00:07:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-21 00:07:29,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-21 00:07:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure ktime_add_us [2021-11-21 00:07:29,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ktime_add_us [2021-11-21 00:07:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2021-11-21 00:07:29,135 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2021-11-21 00:07:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure softing_bootloader_command [2021-11-21 00:07:29,136 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_bootloader_command [2021-11-21 00:07:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-11-21 00:07:29,136 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-11-21 00:07:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_bh_62 [2021-11-21 00:07:29,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_bh_62 [2021-11-21 00:07:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure softing_raw2ktime [2021-11-21 00:07:29,137 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_raw2ktime [2021-11-21 00:07:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2021-11-21 00:07:29,139 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2021-11-21 00:07:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:07:29,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:07:29,142 INFO L130 BoogieDeclarations]: Found specification of procedure store_output [2021-11-21 00:07:29,142 INFO L138 BoogieDeclarations]: Found implementation of procedure store_output [2021-11-21 00:07:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:07:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:07:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure softing_pdev_probe [2021-11-21 00:07:29,144 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_pdev_probe [2021-11-21 00:07:29,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:07:29,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:07:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure softing_netdev_stop [2021-11-21 00:07:29,152 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_netdev_stop [2021-11-21 00:07:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_fromio [2021-11-21 00:07:29,153 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_fromio [2021-11-21 00:07:29,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 00:07:29,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 00:07:29,153 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-21 00:07:29,153 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-21 00:07:29,153 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-21 00:07:29,154 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-21 00:07:29,154 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 00:07:29,154 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 00:07:29,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:07:29,154 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:07:29,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_softing_driver_exit_21_2 [2021-11-21 00:07:29,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_softing_driver_exit_21_2 [2021-11-21 00:07:29,155 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-21 00:07:29,155 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-21 00:07:29,155 INFO L130 BoogieDeclarations]: Found specification of procedure softing_set_reset_dpram [2021-11-21 00:07:29,155 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_set_reset_dpram [2021-11-21 00:07:29,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:07:29,156 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-21 00:07:29,156 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-21 00:07:29,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:07:29,156 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-11-21 00:07:29,156 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-11-21 00:07:29,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:07:29,157 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-21 00:07:29,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~X~int~TO~int [2021-11-21 00:07:29,157 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-21 00:07:29,157 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-21 00:07:29,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:07:29,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:07:29,157 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-11-21 00:07:29,158 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-11-21 00:07:29,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_irq [2021-11-21 00:07:29,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_irq [2021-11-21 00:07:29,158 INFO L130 BoogieDeclarations]: Found specification of procedure fw_parse [2021-11-21 00:07:29,158 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_parse [2021-11-21 00:07:29,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 00:07:29,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 00:07:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2021-11-21 00:07:29,159 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2021-11-21 00:07:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:07:29,159 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:07:29,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:07:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:07:29,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:07:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_bh_61 [2021-11-21 00:07:29,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_bh_61 [2021-11-21 00:07:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure _softing_fct_cmd [2021-11-21 00:07:29,160 INFO L138 BoogieDeclarations]: Found implementation of procedure _softing_fct_cmd [2021-11-21 00:07:29,160 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2021-11-21 00:07:29,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2021-11-21 00:07:29,161 INFO L130 BoogieDeclarations]: Found specification of procedure softing_error_reporting [2021-11-21 00:07:29,161 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_error_reporting [2021-11-21 00:07:29,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:07:29,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:07:29,161 INFO L130 BoogieDeclarations]: Found specification of procedure softing_pdev_remove [2021-11-21 00:07:29,162 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_pdev_remove [2021-11-21 00:07:29,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_spin_of_softing [2021-11-21 00:07:29,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_spin_of_softing [2021-11-21 00:07:29,162 INFO L130 BoogieDeclarations]: Found specification of procedure softing_enable_irq [2021-11-21 00:07:29,164 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_enable_irq [2021-11-21 00:07:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:07:29,164 INFO L130 BoogieDeclarations]: Found specification of procedure softing_load_fw [2021-11-21 00:07:29,164 INFO L138 BoogieDeclarations]: Found implementation of procedure softing_load_fw [2021-11-21 00:07:29,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:07:29,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:07:30,195 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:07:30,198 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:07:31,877 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:07:34,881 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:07:34,972 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:07:36,236 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:07:36,236 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:07:36,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:07:36 BoogieIcfgContainer [2021-11-21 00:07:36,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:07:36,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:07:36,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:07:36,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:07:36,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:07:23" (1/3) ... [2021-11-21 00:07:36,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77db5984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:07:36, skipping insertion in model container [2021-11-21 00:07:36,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:07:28" (2/3) ... [2021-11-21 00:07:36,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77db5984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:07:36, skipping insertion in model container [2021-11-21 00:07:36,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:07:36" (3/3) ... [2021-11-21 00:07:36,252 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-net-can-softing-softing.cil.i [2021-11-21 00:07:36,258 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:07:36,258 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 00:07:36,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:07:36,351 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 [2021-11-21 00:07:36,351 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 00:07:36,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 1696 states, 1056 states have (on average 1.3456439393939394) internal successors, (1421), 1070 states have internal predecessors, (1421), 555 states have call successors, (555), 83 states have call predecessors, (555), 82 states have return successors, (547), 547 states have call predecessors, (547), 547 states have call successors, (547) [2021-11-21 00:07:36,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-11-21 00:07:36,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:36,466 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:07:36,467 INFO L402 AbstractCegarLoop]: === Iteration 1 === 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)] === [2021-11-21 00:07:36,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:36,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1300419699, now seen corresponding path program 1 times [2021-11-21 00:07:36,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:36,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953083066] [2021-11-21 00:07:36,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:36,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-11-21 00:07:37,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:37,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953083066] [2021-11-21 00:07:37,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953083066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:37,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:37,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:07:37,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572844801] [2021-11-21 00:07:37,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:37,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:07:37,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:37,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:07:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:37,456 INFO L87 Difference]: Start difference. First operand has 1696 states, 1056 states have (on average 1.3456439393939394) internal successors, (1421), 1070 states have internal predecessors, (1421), 555 states have call successors, (555), 83 states have call predecessors, (555), 82 states have return successors, (547), 547 states have call predecessors, (547), 547 states have call successors, (547) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 00:07:40,055 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:42,201 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:43,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:43,078 INFO L93 Difference]: Finished difference Result 4804 states and 7311 transitions. [2021-11-21 00:07:43,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:07:43,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 411 [2021-11-21 00:07:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:43,130 INFO L225 Difference]: With dead ends: 4804 [2021-11-21 00:07:43,131 INFO L226 Difference]: Without dead ends: 3170 [2021-11-21 00:07:43,148 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 [2021-11-21 00:07:43,152 INFO L933 BasicCegarLoop]: 2704 mSDtfsCounter, 2226 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2226 SdHoareTripleChecker+Valid, 4950 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:43,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2226 Valid, 4950 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-21 00:07:43,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2021-11-21 00:07:43,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3144. [2021-11-21 00:07:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3144 states, 1979 states have (on average 1.3476503284487116) internal successors, (2667), 2007 states have internal predecessors, (2667), 1003 states have call successors, (1003), 160 states have call predecessors, (1003), 159 states have return successors, (1044), 995 states have call predecessors, (1044), 999 states have call successors, (1044) [2021-11-21 00:07:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3144 states to 3144 states and 4714 transitions. [2021-11-21 00:07:43,460 INFO L78 Accepts]: Start accepts. Automaton has 3144 states and 4714 transitions. Word has length 411 [2021-11-21 00:07:43,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:43,463 INFO L470 AbstractCegarLoop]: Abstraction has 3144 states and 4714 transitions. [2021-11-21 00:07:43,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (45), 2 states have call predecessors, (45), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 00:07:43,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3144 states and 4714 transitions. [2021-11-21 00:07:43,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2021-11-21 00:07:43,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:43,475 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:07:43,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:07:43,476 INFO L402 AbstractCegarLoop]: === Iteration 2 === 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)] === [2021-11-21 00:07:43,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:43,477 INFO L85 PathProgramCache]: Analyzing trace with hash -522513415, now seen corresponding path program 1 times [2021-11-21 00:07:43,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:43,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578030599] [2021-11-21 00:07:43,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:43,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-11-21 00:07:43,993 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:43,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578030599] [2021-11-21 00:07:43,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578030599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:43,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:43,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:07:43,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784394145] [2021-11-21 00:07:43,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:43,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:07:43,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:43,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:07:43,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:43,998 INFO L87 Difference]: Start difference. First operand 3144 states and 4714 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 00:07:46,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:48,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:49,709 INFO L93 Difference]: Finished difference Result 9187 states and 13775 transitions. [2021-11-21 00:07:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:07:49,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 411 [2021-11-21 00:07:49,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:49,769 INFO L225 Difference]: With dead ends: 9187 [2021-11-21 00:07:49,769 INFO L226 Difference]: Without dead ends: 6122 [2021-11-21 00:07:49,790 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 [2021-11-21 00:07:49,792 INFO L933 BasicCegarLoop]: 2666 mSDtfsCounter, 2301 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 4818 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:49,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2301 Valid, 4818 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-21 00:07:49,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2021-11-21 00:07:50,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6118. [2021-11-21 00:07:50,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6118 states, 3882 states have (on average 1.3500772797527048) internal successors, (5241), 3930 states have internal predecessors, (5241), 1918 states have call successors, (1918), 316 states have call predecessors, (1918), 315 states have return successors, (2004), 1909 states have call predecessors, (2004), 1914 states have call successors, (2004) [2021-11-21 00:07:50,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6118 states to 6118 states and 9163 transitions. [2021-11-21 00:07:50,271 INFO L78 Accepts]: Start accepts. Automaton has 6118 states and 9163 transitions. Word has length 411 [2021-11-21 00:07:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:50,273 INFO L470 AbstractCegarLoop]: Abstraction has 6118 states and 9163 transitions. [2021-11-21 00:07:50,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 00:07:50,275 INFO L276 IsEmpty]: Start isEmpty. Operand 6118 states and 9163 transitions. [2021-11-21 00:07:50,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2021-11-21 00:07:50,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:50,289 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:07:50,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:07:50,292 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)] === [2021-11-21 00:07:50,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:50,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1215184926, now seen corresponding path program 1 times [2021-11-21 00:07:50,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:50,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843517207] [2021-11-21 00:07:50,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:50,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:50,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-11-21 00:07:50,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:50,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843517207] [2021-11-21 00:07:50,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843517207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:50,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:50,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:07:50,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850605232] [2021-11-21 00:07:50,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:50,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:07:50,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:50,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:07:50,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:07:50,692 INFO L87 Difference]: Start difference. First operand 6118 states and 9163 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 00:07:53,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:07:55,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:07:55,891 INFO L93 Difference]: Finished difference Result 16900 states and 25587 transitions. [2021-11-21 00:07:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:07:55,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 418 [2021-11-21 00:07:55,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:07:55,999 INFO L225 Difference]: With dead ends: 16900 [2021-11-21 00:07:56,000 INFO L226 Difference]: Without dead ends: 10861 [2021-11-21 00:07:56,040 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 [2021-11-21 00:07:56,044 INFO L933 BasicCegarLoop]: 2640 mSDtfsCounter, 1906 mSDsluCounter, 2485 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1906 SdHoareTripleChecker+Valid, 4827 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:07:56,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1906 Valid, 4827 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 637 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-21 00:07:56,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10861 states. [2021-11-21 00:07:56,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10861 to 10828. [2021-11-21 00:07:56,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10828 states, 6850 states have (on average 1.3493430656934307) internal successors, (9243), 6940 states have internal predecessors, (9243), 3388 states have call successors, (3388), 592 states have call predecessors, (3388), 587 states have return successors, (3850), 3355 states have call predecessors, (3850), 3384 states have call successors, (3850) [2021-11-21 00:07:56,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10828 states to 10828 states and 16481 transitions. [2021-11-21 00:07:56,868 INFO L78 Accepts]: Start accepts. Automaton has 10828 states and 16481 transitions. Word has length 418 [2021-11-21 00:07:56,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:07:56,869 INFO L470 AbstractCegarLoop]: Abstraction has 10828 states and 16481 transitions. [2021-11-21 00:07:56,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (44), 2 states have call predecessors, (44), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-21 00:07:56,871 INFO L276 IsEmpty]: Start isEmpty. Operand 10828 states and 16481 transitions. [2021-11-21 00:07:56,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-11-21 00:07:56,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:07:56,883 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:07:56,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:07:56,884 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:07:56,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:07:56,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1488726530, now seen corresponding path program 1 times [2021-11-21 00:07:56,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:07:56,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234989758] [2021-11-21 00:07:56,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:07:56,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:07:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:07:57,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-11-21 00:07:57,351 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:07:57,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234989758] [2021-11-21 00:07:57,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234989758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:07:57,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:07:57,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 00:07:57,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386614458] [2021-11-21 00:07:57,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:07:57,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:07:57,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:07:57,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:07:57,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:07:57,364 INFO L87 Difference]: Start difference. First operand 10828 states and 16481 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-21 00:08:04,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:09,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:08:09,183 INFO L93 Difference]: Finished difference Result 32709 states and 49449 transitions. [2021-11-21 00:08:09,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:08:09,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) Word has length 431 [2021-11-21 00:08:09,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:08:09,492 INFO L225 Difference]: With dead ends: 32709 [2021-11-21 00:08:09,492 INFO L226 Difference]: Without dead ends: 21960 [2021-11-21 00:08:09,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:08:09,579 INFO L933 BasicCegarLoop]: 3039 mSDtfsCounter, 8043 mSDsluCounter, 4217 mSDsCounter, 0 mSdLazyCounter, 2837 mSolverCounterSat, 2716 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8254 SdHoareTripleChecker+Valid, 6591 SdHoareTripleChecker+Invalid, 5554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2716 IncrementalHoareTripleChecker+Valid, 2837 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:08:09,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8254 Valid, 6591 Invalid, 5554 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2716 Valid, 2837 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2021-11-21 00:08:09,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21960 states. [2021-11-21 00:08:11,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21960 to 21886. [2021-11-21 00:08:11,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21886 states, 13746 states have (on average 1.3376254910519423) internal successors, (18387), 13954 states have internal predecessors, (18387), 6805 states have call successors, (6805), 1347 states have call predecessors, (6805), 1332 states have return successors, (7708), 6708 states have call predecessors, (7708), 6801 states have call successors, (7708) [2021-11-21 00:08:11,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21886 states to 21886 states and 32900 transitions. [2021-11-21 00:08:11,279 INFO L78 Accepts]: Start accepts. Automaton has 21886 states and 32900 transitions. Word has length 431 [2021-11-21 00:08:11,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:08:11,281 INFO L470 AbstractCegarLoop]: Abstraction has 21886 states and 32900 transitions. [2021-11-21 00:08:11,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (44), 3 states have call predecessors, (44), 3 states have call successors, (44) [2021-11-21 00:08:11,282 INFO L276 IsEmpty]: Start isEmpty. Operand 21886 states and 32900 transitions. [2021-11-21 00:08:11,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-11-21 00:08:11,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:08:11,297 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:08:11,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:08:11,298 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)] === [2021-11-21 00:08:11,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:08:11,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2041525351, now seen corresponding path program 1 times [2021-11-21 00:08:11,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:08:11,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624494595] [2021-11-21 00:08:11,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:11,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:08:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6006 trivial. 0 not checked. [2021-11-21 00:08:11,610 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:08:11,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624494595] [2021-11-21 00:08:11,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624494595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:08:11,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:08:11,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:08:11,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815965950] [2021-11-21 00:08:11,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:08:11,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:08:11,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:08:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:08:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:08:11,613 INFO L87 Difference]: Start difference. First operand 21886 states and 32900 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-21 00:08:13,786 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:18,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:08:18,230 INFO L93 Difference]: Finished difference Result 48345 states and 72843 transitions. [2021-11-21 00:08:18,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:08:18,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) Word has length 433 [2021-11-21 00:08:18,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:08:18,368 INFO L225 Difference]: With dead ends: 48345 [2021-11-21 00:08:18,368 INFO L226 Difference]: Without dead ends: 26538 [2021-11-21 00:08:18,436 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 [2021-11-21 00:08:18,440 INFO L933 BasicCegarLoop]: 3457 mSDtfsCounter, 2136 mSDsluCounter, 2405 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2136 SdHoareTripleChecker+Valid, 5586 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:08:18,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2136 Valid, 5586 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-21 00:08:18,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26538 states. [2021-11-21 00:08:19,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26538 to 26505. [2021-11-21 00:08:20,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26505 states, 16754 states have (on average 1.3387250805777724) internal successors, (22429), 17026 states have internal predecessors, (22429), 8252 states have call successors, (8252), 1517 states have call predecessors, (8252), 1496 states have return successors, (8975), 8097 states have call predecessors, (8975), 8248 states have call successors, (8975) [2021-11-21 00:08:20,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26505 states to 26505 states and 39656 transitions. [2021-11-21 00:08:20,185 INFO L78 Accepts]: Start accepts. Automaton has 26505 states and 39656 transitions. Word has length 433 [2021-11-21 00:08:20,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:08:20,186 INFO L470 AbstractCegarLoop]: Abstraction has 26505 states and 39656 transitions. [2021-11-21 00:08:20,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (43), 3 states have call predecessors, (43), 3 states have call successors, (43) [2021-11-21 00:08:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand 26505 states and 39656 transitions. [2021-11-21 00:08:20,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2021-11-21 00:08:20,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:08:20,196 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:08:20,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:08:20,197 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)] === [2021-11-21 00:08:20,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:08:20,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1830707001, now seen corresponding path program 1 times [2021-11-21 00:08:20,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:08:20,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318069177] [2021-11-21 00:08:20,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:20,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:08:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6279 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6279 trivial. 0 not checked. [2021-11-21 00:08:20,842 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:08:20,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318069177] [2021-11-21 00:08:20,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318069177] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:08:20,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:08:20,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:08:20,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87008635] [2021-11-21 00:08:20,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:08:20,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:08:20,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:08:20,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:08:20,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:08:20,845 INFO L87 Difference]: Start difference. First operand 26505 states and 39656 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-21 00:08:26,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:08:26,276 INFO L93 Difference]: Finished difference Result 26511 states and 39661 transitions. [2021-11-21 00:08:26,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:08:26,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 453 [2021-11-21 00:08:26,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:08:26,413 INFO L225 Difference]: With dead ends: 26511 [2021-11-21 00:08:26,413 INFO L226 Difference]: Without dead ends: 26509 [2021-11-21 00:08:26,426 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 [2021-11-21 00:08:26,427 INFO L933 BasicCegarLoop]: 2182 mSDtfsCounter, 2385 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2396 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:08:26,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2396 Valid, 6533 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-21 00:08:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26509 states. [2021-11-21 00:08:28,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26509 to 26509. [2021-11-21 00:08:28,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26509 states, 16757 states have (on average 1.3386644387420183) internal successors, (22432), 17029 states have internal predecessors, (22432), 8252 states have call successors, (8252), 1518 states have call predecessors, (8252), 1497 states have return successors, (8975), 8097 states have call predecessors, (8975), 8248 states have call successors, (8975) [2021-11-21 00:08:28,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26509 states to 26509 states and 39659 transitions. [2021-11-21 00:08:28,354 INFO L78 Accepts]: Start accepts. Automaton has 26509 states and 39659 transitions. Word has length 453 [2021-11-21 00:08:28,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:08:28,355 INFO L470 AbstractCegarLoop]: Abstraction has 26509 states and 39659 transitions. [2021-11-21 00:08:28,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (50), 3 states have call predecessors, (50), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2021-11-21 00:08:28,356 INFO L276 IsEmpty]: Start isEmpty. Operand 26509 states and 39659 transitions. [2021-11-21 00:08:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2021-11-21 00:08:28,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:08:28,365 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:08:28,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:08:28,366 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)] === [2021-11-21 00:08:28,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:08:28,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1800351711, now seen corresponding path program 1 times [2021-11-21 00:08:28,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:08:28,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924342181] [2021-11-21 00:08:28,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:28,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:08:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6281 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6279 trivial. 0 not checked. [2021-11-21 00:08:29,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:08:29,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924342181] [2021-11-21 00:08:29,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924342181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:08:29,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:08:29,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:08:29,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662751968] [2021-11-21 00:08:29,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:08:29,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:08:29,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:08:29,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:08:29,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:08:29,070 INFO L87 Difference]: Start difference. First operand 26509 states and 39659 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-21 00:08:31,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:33,023 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:36,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:08:36,300 INFO L93 Difference]: Finished difference Result 26515 states and 39664 transitions. [2021-11-21 00:08:36,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:08:36,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 458 [2021-11-21 00:08:36,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:08:36,433 INFO L225 Difference]: With dead ends: 26515 [2021-11-21 00:08:36,434 INFO L226 Difference]: Without dead ends: 26513 [2021-11-21 00:08:36,447 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 [2021-11-21 00:08:36,448 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2380 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2390 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:08:36,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2390 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-21 00:08:36,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26513 states. [2021-11-21 00:08:38,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26513 to 26513. [2021-11-21 00:08:38,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26513 states, 16760 states have (on average 1.3386038186157518) internal successors, (22435), 17032 states have internal predecessors, (22435), 8252 states have call successors, (8252), 1519 states have call predecessors, (8252), 1498 states have return successors, (8975), 8097 states have call predecessors, (8975), 8248 states have call successors, (8975) [2021-11-21 00:08:38,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26513 states to 26513 states and 39662 transitions. [2021-11-21 00:08:38,155 INFO L78 Accepts]: Start accepts. Automaton has 26513 states and 39662 transitions. Word has length 458 [2021-11-21 00:08:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:08:38,157 INFO L470 AbstractCegarLoop]: Abstraction has 26513 states and 39662 transitions. [2021-11-21 00:08:38,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (51), 3 states have call predecessors, (51), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2021-11-21 00:08:38,157 INFO L276 IsEmpty]: Start isEmpty. Operand 26513 states and 39662 transitions. [2021-11-21 00:08:38,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2021-11-21 00:08:38,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:08:38,166 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:08:38,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:08:38,166 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)] === [2021-11-21 00:08:38,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:08:38,168 INFO L85 PathProgramCache]: Analyzing trace with hash -27292092, now seen corresponding path program 1 times [2021-11-21 00:08:38,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:08:38,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180097911] [2021-11-21 00:08:38,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:38,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:08:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:38,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6295 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6291 trivial. 0 not checked. [2021-11-21 00:08:38,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:08:38,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180097911] [2021-11-21 00:08:38,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180097911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:08:38,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:08:38,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:08:38,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134538619] [2021-11-21 00:08:38,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:08:38,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:08:38,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:08:38,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:08:38,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:08:38,765 INFO L87 Difference]: Start difference. First operand 26513 states and 39662 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-21 00:08:41,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:44,704 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:45,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:08:45,495 INFO L93 Difference]: Finished difference Result 30055 states and 44389 transitions. [2021-11-21 00:08:45,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:08:45,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 467 [2021-11-21 00:08:45,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:08:45,646 INFO L225 Difference]: With dead ends: 30055 [2021-11-21 00:08:45,647 INFO L226 Difference]: Without dead ends: 30053 [2021-11-21 00:08:45,666 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 [2021-11-21 00:08:45,667 INFO L933 BasicCegarLoop]: 2335 mSDtfsCounter, 2000 mSDsluCounter, 6251 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 7877 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:08:45,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2011 Valid, 7877 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1039 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-21 00:08:45,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30053 states. [2021-11-21 00:08:47,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30053 to 30049. [2021-11-21 00:08:47,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30049 states, 18779 states have (on average 1.3256296927418925) internal successors, (24894), 19091 states have internal predecessors, (24894), 9370 states have call successors, (9370), 1918 states have call predecessors, (9370), 1897 states have return successors, (10121), 9207 states have call predecessors, (10121), 9366 states have call successors, (10121) [2021-11-21 00:08:47,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30049 states to 30049 states and 44385 transitions. [2021-11-21 00:08:47,436 INFO L78 Accepts]: Start accepts. Automaton has 30049 states and 44385 transitions. Word has length 467 [2021-11-21 00:08:47,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:08:47,438 INFO L470 AbstractCegarLoop]: Abstraction has 30049 states and 44385 transitions. [2021-11-21 00:08:47,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-21 00:08:47,438 INFO L276 IsEmpty]: Start isEmpty. Operand 30049 states and 44385 transitions. [2021-11-21 00:08:47,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-11-21 00:08:47,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:08:47,451 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:08:47,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:08:47,451 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)] === [2021-11-21 00:08:47,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:08:47,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1211838305, now seen corresponding path program 1 times [2021-11-21 00:08:47,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:08:47,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27195150] [2021-11-21 00:08:47,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:47,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:08:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6297 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6291 trivial. 0 not checked. [2021-11-21 00:08:48,062 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:08:48,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27195150] [2021-11-21 00:08:48,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27195150] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:08:48,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:08:48,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:08:48,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491849783] [2021-11-21 00:08:48,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:08:48,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:08:48,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:08:48,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:08:48,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:08:48,067 INFO L87 Difference]: Start difference. First operand 30049 states and 44385 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-21 00:08:50,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:52,221 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:54,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:08:56,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:08:56,838 INFO L93 Difference]: Finished difference Result 30055 states and 44390 transitions. [2021-11-21 00:08:56,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:08:56,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) Word has length 468 [2021-11-21 00:08:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:08:56,918 INFO L225 Difference]: With dead ends: 30055 [2021-11-21 00:08:56,918 INFO L226 Difference]: Without dead ends: 30053 [2021-11-21 00:08:56,929 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 [2021-11-21 00:08:56,930 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2380 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:08:56,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2388 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-21 00:08:56,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30053 states. [2021-11-21 00:08:58,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30053 to 30053. [2021-11-21 00:08:58,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30053 states, 18782 states have (on average 1.3255776807581727) internal successors, (24897), 19094 states have internal predecessors, (24897), 9370 states have call successors, (9370), 1919 states have call predecessors, (9370), 1898 states have return successors, (10121), 9207 states have call predecessors, (10121), 9366 states have call successors, (10121) [2021-11-21 00:08:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30053 states to 30053 states and 44388 transitions. [2021-11-21 00:08:58,360 INFO L78 Accepts]: Start accepts. Automaton has 30053 states and 44388 transitions. Word has length 468 [2021-11-21 00:08:58,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:08:58,361 INFO L470 AbstractCegarLoop]: Abstraction has 30053 states and 44388 transitions. [2021-11-21 00:08:58,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (53), 3 states have call predecessors, (53), 1 states have return successors, (51), 2 states have call predecessors, (51), 2 states have call successors, (51) [2021-11-21 00:08:58,361 INFO L276 IsEmpty]: Start isEmpty. Operand 30053 states and 44388 transitions. [2021-11-21 00:08:58,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2021-11-21 00:08:58,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:08:58,373 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:08:58,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:08:58,373 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)] === [2021-11-21 00:08:58,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:08:58,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2130743737, now seen corresponding path program 1 times [2021-11-21 00:08:58,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:08:58,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026402619] [2021-11-21 00:08:58,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:08:58,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:08:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:08:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6311 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6303 trivial. 0 not checked. [2021-11-21 00:08:58,682 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:08:58,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026402619] [2021-11-21 00:08:58,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026402619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:08:58,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:08:58,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:08:58,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428750149] [2021-11-21 00:08:58,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:08:58,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:08:58,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:08:58,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:08:58,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:08:58,684 INFO L87 Difference]: Start difference. First operand 30053 states and 44388 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-21 00:09:00,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:01,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:05,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:09:05,587 INFO L93 Difference]: Finished difference Result 30059 states and 44393 transitions. [2021-11-21 00:09:05,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:09:05,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) Word has length 473 [2021-11-21 00:09:05,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:09:05,702 INFO L225 Difference]: With dead ends: 30059 [2021-11-21 00:09:05,702 INFO L226 Difference]: Without dead ends: 30057 [2021-11-21 00:09:05,715 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 [2021-11-21 00:09:05,716 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2380 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:09:05,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2387 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-11-21 00:09:05,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30057 states. [2021-11-21 00:09:07,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30057 to 30057. [2021-11-21 00:09:07,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30057 states, 18785 states have (on average 1.325525685387277) internal successors, (24900), 19097 states have internal predecessors, (24900), 9370 states have call successors, (9370), 1920 states have call predecessors, (9370), 1899 states have return successors, (10121), 9207 states have call predecessors, (10121), 9366 states have call successors, (10121) [2021-11-21 00:09:07,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30057 states to 30057 states and 44391 transitions. [2021-11-21 00:09:07,310 INFO L78 Accepts]: Start accepts. Automaton has 30057 states and 44391 transitions. Word has length 473 [2021-11-21 00:09:07,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:09:07,311 INFO L470 AbstractCegarLoop]: Abstraction has 30057 states and 44391 transitions. [2021-11-21 00:09:07,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (54), 3 states have call predecessors, (54), 1 states have return successors, (52), 2 states have call predecessors, (52), 2 states have call successors, (52) [2021-11-21 00:09:07,312 INFO L276 IsEmpty]: Start isEmpty. Operand 30057 states and 44391 transitions. [2021-11-21 00:09:07,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2021-11-21 00:09:07,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:09:07,326 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:09:07,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:09:07,326 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)] === [2021-11-21 00:09:07,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:09:07,327 INFO L85 PathProgramCache]: Analyzing trace with hash 358915180, now seen corresponding path program 1 times [2021-11-21 00:09:07,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:09:07,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960039672] [2021-11-21 00:09:07,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:07,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:09:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6336 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6326 trivial. 0 not checked. [2021-11-21 00:09:07,981 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:09:07,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960039672] [2021-11-21 00:09:07,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960039672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:09:07,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:09:07,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:09:07,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054954153] [2021-11-21 00:09:07,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:09:07,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:09:07,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:09:07,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:09:07,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:09:07,985 INFO L87 Difference]: Start difference. First operand 30057 states and 44391 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-21 00:09:10,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:14,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:14,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:09:14,711 INFO L93 Difference]: Finished difference Result 30067 states and 44398 transitions. [2021-11-21 00:09:14,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:09:14,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) Word has length 481 [2021-11-21 00:09:14,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:09:14,805 INFO L225 Difference]: With dead ends: 30067 [2021-11-21 00:09:14,805 INFO L226 Difference]: Without dead ends: 30065 [2021-11-21 00:09:14,815 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 [2021-11-21 00:09:14,815 INFO L933 BasicCegarLoop]: 2335 mSDtfsCounter, 2000 mSDsluCounter, 6251 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 7877 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:09:14,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2008 Valid, 7877 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1039 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-21 00:09:14,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30065 states. [2021-11-21 00:09:16,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30065 to 30061. [2021-11-21 00:09:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30061 states, 18788 states have (on average 1.3254737066212476) internal successors, (24903), 19100 states have internal predecessors, (24903), 9370 states have call successors, (9370), 1921 states have call predecessors, (9370), 1900 states have return successors, (10121), 9207 states have call predecessors, (10121), 9366 states have call successors, (10121) [2021-11-21 00:09:16,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30061 states to 30061 states and 44394 transitions. [2021-11-21 00:09:16,197 INFO L78 Accepts]: Start accepts. Automaton has 30061 states and 44394 transitions. Word has length 481 [2021-11-21 00:09:16,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:09:16,197 INFO L470 AbstractCegarLoop]: Abstraction has 30061 states and 44394 transitions. [2021-11-21 00:09:16,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (57), 3 states have call predecessors, (57), 1 states have return successors, (55), 2 states have call predecessors, (55), 2 states have call successors, (55) [2021-11-21 00:09:16,197 INFO L276 IsEmpty]: Start isEmpty. Operand 30061 states and 44394 transitions. [2021-11-21 00:09:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2021-11-21 00:09:16,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:09:16,210 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 7, 6, 6, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:09:16,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:09:16,211 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)] === [2021-11-21 00:09:16,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:09:16,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1802360294, now seen corresponding path program 1 times [2021-11-21 00:09:16,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:09:16,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632429179] [2021-11-21 00:09:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:16,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:09:16,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6358 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6346 trivial. 0 not checked. [2021-11-21 00:09:16,508 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:09:16,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632429179] [2021-11-21 00:09:16,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632429179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:09:16,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:09:16,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:09:16,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249008406] [2021-11-21 00:09:16,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:09:16,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:09:16,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:09:16,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:09:16,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:09:16,511 INFO L87 Difference]: Start difference. First operand 30061 states and 44394 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:09:19,265 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:23,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:09:23,006 INFO L93 Difference]: Finished difference Result 30071 states and 44401 transitions. [2021-11-21 00:09:23,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:09:23,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 486 [2021-11-21 00:09:23,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:09:23,123 INFO L225 Difference]: With dead ends: 30071 [2021-11-21 00:09:23,123 INFO L226 Difference]: Without dead ends: 30069 [2021-11-21 00:09:23,134 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 [2021-11-21 00:09:23,135 INFO L933 BasicCegarLoop]: 2335 mSDtfsCounter, 2000 mSDsluCounter, 6251 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 7877 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:09:23,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 7877 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1039 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-21 00:09:23,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30069 states. [2021-11-21 00:09:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30069 to 30065. [2021-11-21 00:09:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30065 states, 18791 states have (on average 1.3254217444521312) internal successors, (24906), 19103 states have internal predecessors, (24906), 9370 states have call successors, (9370), 1922 states have call predecessors, (9370), 1901 states have return successors, (10121), 9207 states have call predecessors, (10121), 9366 states have call successors, (10121) [2021-11-21 00:09:24,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30065 states to 30065 states and 44397 transitions. [2021-11-21 00:09:24,546 INFO L78 Accepts]: Start accepts. Automaton has 30065 states and 44397 transitions. Word has length 486 [2021-11-21 00:09:24,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:09:24,546 INFO L470 AbstractCegarLoop]: Abstraction has 30065 states and 44397 transitions. [2021-11-21 00:09:24,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:09:24,547 INFO L276 IsEmpty]: Start isEmpty. Operand 30065 states and 44397 transitions. [2021-11-21 00:09:24,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2021-11-21 00:09:24,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:09:24,561 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 8, 7, 7, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:09:24,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:09:24,561 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:09:24,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:09:24,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1306333420, now seen corresponding path program 1 times [2021-11-21 00:09:24,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:09:24,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938703334] [2021-11-21 00:09:24,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:24,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:09:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6384 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6370 trivial. 0 not checked. [2021-11-21 00:09:24,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:09:24,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938703334] [2021-11-21 00:09:24,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938703334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:09:24,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:09:24,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:09:24,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012666974] [2021-11-21 00:09:24,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:09:24,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:09:24,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:09:24,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:09:24,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:09:24,870 INFO L87 Difference]: Start difference. First operand 30065 states and 44397 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-21 00:09:27,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:29,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:31,034 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:34,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:09:34,094 INFO L93 Difference]: Finished difference Result 30071 states and 44402 transitions. [2021-11-21 00:09:34,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:09:34,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) Word has length 491 [2021-11-21 00:09:34,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:09:34,180 INFO L225 Difference]: With dead ends: 30071 [2021-11-21 00:09:34,180 INFO L226 Difference]: Without dead ends: 30069 [2021-11-21 00:09:34,192 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 [2021-11-21 00:09:34,193 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2379 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:09:34,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2383 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-21 00:09:34,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30069 states. [2021-11-21 00:09:35,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30069 to 30069. [2021-11-21 00:09:35,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30069 states, 18794 states have (on average 1.3253697988719804) internal successors, (24909), 19106 states have internal predecessors, (24909), 9370 states have call successors, (9370), 1923 states have call predecessors, (9370), 1902 states have return successors, (10121), 9207 states have call predecessors, (10121), 9366 states have call successors, (10121) [2021-11-21 00:09:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30069 states to 30069 states and 44400 transitions. [2021-11-21 00:09:35,752 INFO L78 Accepts]: Start accepts. Automaton has 30069 states and 44400 transitions. Word has length 491 [2021-11-21 00:09:35,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:09:35,753 INFO L470 AbstractCegarLoop]: Abstraction has 30069 states and 44400 transitions. [2021-11-21 00:09:35,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (59), 3 states have call predecessors, (59), 1 states have return successors, (57), 2 states have call predecessors, (57), 2 states have call successors, (57) [2021-11-21 00:09:35,753 INFO L276 IsEmpty]: Start isEmpty. Operand 30069 states and 44400 transitions. [2021-11-21 00:09:35,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2021-11-21 00:09:35,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:09:35,768 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 9, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:09:35,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 00:09:35,769 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)] === [2021-11-21 00:09:35,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:09:35,769 INFO L85 PathProgramCache]: Analyzing trace with hash -725730361, now seen corresponding path program 1 times [2021-11-21 00:09:35,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:09:35,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306083802] [2021-11-21 00:09:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:35,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:09:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6407 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6391 trivial. 0 not checked. [2021-11-21 00:09:36,085 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:09:36,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306083802] [2021-11-21 00:09:36,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306083802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:09:36,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:09:36,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:09:36,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395854231] [2021-11-21 00:09:36,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:09:36,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:09:36,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:09:36,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:09:36,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:09:36,087 INFO L87 Difference]: Start difference. First operand 30069 states and 44400 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:09:39,206 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:43,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:09:43,031 INFO L93 Difference]: Finished difference Result 30079 states and 44407 transitions. [2021-11-21 00:09:43,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:09:43,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 493 [2021-11-21 00:09:43,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:09:43,119 INFO L225 Difference]: With dead ends: 30079 [2021-11-21 00:09:43,119 INFO L226 Difference]: Without dead ends: 30077 [2021-11-21 00:09:43,129 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 [2021-11-21 00:09:43,130 INFO L933 BasicCegarLoop]: 2335 mSDtfsCounter, 2001 mSDsluCounter, 6251 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2006 SdHoareTripleChecker+Valid, 7877 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:09:43,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2006 Valid, 7877 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1039 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-21 00:09:43,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30077 states. [2021-11-21 00:09:44,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30077 to 30073. [2021-11-21 00:09:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30073 states, 18797 states have (on average 1.325317869872852) internal successors, (24912), 19109 states have internal predecessors, (24912), 9370 states have call successors, (9370), 1924 states have call predecessors, (9370), 1903 states have return successors, (10121), 9207 states have call predecessors, (10121), 9366 states have call successors, (10121) [2021-11-21 00:09:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30073 states to 30073 states and 44403 transitions. [2021-11-21 00:09:44,803 INFO L78 Accepts]: Start accepts. Automaton has 30073 states and 44403 transitions. Word has length 493 [2021-11-21 00:09:44,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:09:44,805 INFO L470 AbstractCegarLoop]: Abstraction has 30073 states and 44403 transitions. [2021-11-21 00:09:44,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (58), 3 states have call predecessors, (58), 1 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) [2021-11-21 00:09:44,805 INFO L276 IsEmpty]: Start isEmpty. Operand 30073 states and 44403 transitions. [2021-11-21 00:09:44,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2021-11-21 00:09:44,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:09:44,986 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 10, 9, 9, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:09:44,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 00:09:44,986 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:09:44,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:09:44,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2044750484, now seen corresponding path program 1 times [2021-11-21 00:09:44,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:09:44,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125539346] [2021-11-21 00:09:44,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:44,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:09:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6448 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6430 trivial. 0 not checked. [2021-11-21 00:09:45,323 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:09:45,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125539346] [2021-11-21 00:09:45,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125539346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:09:45,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:09:45,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:09:45,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212293046] [2021-11-21 00:09:45,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:09:45,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:09:45,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:09:45,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:09:45,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:09:45,326 INFO L87 Difference]: Start difference. First operand 30073 states and 44403 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-21 00:09:48,042 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:49,247 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:51,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:09:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:09:53,829 INFO L93 Difference]: Finished difference Result 30079 states and 44408 transitions. [2021-11-21 00:09:53,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:09:53,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) Word has length 501 [2021-11-21 00:09:53,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:09:53,946 INFO L225 Difference]: With dead ends: 30079 [2021-11-21 00:09:53,947 INFO L226 Difference]: Without dead ends: 30077 [2021-11-21 00:09:53,960 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 [2021-11-21 00:09:53,961 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2379 mSDsluCounter, 4965 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2381 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:09:53,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2381 Valid, 6536 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 939 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-11-21 00:09:53,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30077 states. [2021-11-21 00:09:55,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30077 to 30077. [2021-11-21 00:09:55,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30077 states, 18800 states have (on average 1.3252659574468084) internal successors, (24915), 19112 states have internal predecessors, (24915), 9370 states have call successors, (9370), 1925 states have call predecessors, (9370), 1904 states have return successors, (10121), 9207 states have call predecessors, (10121), 9366 states have call successors, (10121) [2021-11-21 00:09:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30077 states to 30077 states and 44406 transitions. [2021-11-21 00:09:55,711 INFO L78 Accepts]: Start accepts. Automaton has 30077 states and 44406 transitions. Word has length 501 [2021-11-21 00:09:55,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:09:55,712 INFO L470 AbstractCegarLoop]: Abstraction has 30077 states and 44406 transitions. [2021-11-21 00:09:55,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (61), 3 states have call predecessors, (61), 1 states have return successors, (59), 2 states have call predecessors, (59), 2 states have call successors, (59) [2021-11-21 00:09:55,712 INFO L276 IsEmpty]: Start isEmpty. Operand 30077 states and 44406 transitions. [2021-11-21 00:09:55,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2021-11-21 00:09:55,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:09:55,727 INFO L514 BasicCegarLoop]: trace histogram [45, 39, 39, 39, 39, 39, 39, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:09:55,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 00:09:55,728 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)] === [2021-11-21 00:09:55,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:09:55,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1505762393, now seen corresponding path program 1 times [2021-11-21 00:09:55,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:09:55,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553442297] [2021-11-21 00:09:55,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:09:55,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:09:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:09:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6470 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6456 trivial. 0 not checked. [2021-11-21 00:09:55,951 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:09:55,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553442297] [2021-11-21 00:09:55,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553442297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:09:55,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:09:55,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:09:55,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701475306] [2021-11-21 00:09:55,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:09:55,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:09:55,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:09:55,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:09:55,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:09:55,956 INFO L87 Difference]: Start difference. First operand 30077 states and 44406 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-21 00:09:58,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:00,328 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:03,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:06,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:06,123 INFO L93 Difference]: Finished difference Result 69850 states and 103079 transitions. [2021-11-21 00:10:06,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:10:06,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 500 [2021-11-21 00:10:06,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:06,246 INFO L225 Difference]: With dead ends: 69850 [2021-11-21 00:10:06,246 INFO L226 Difference]: Without dead ends: 40276 [2021-11-21 00:10:06,316 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 [2021-11-21 00:10:06,317 INFO L933 BasicCegarLoop]: 4148 mSDtfsCounter, 2288 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 6307 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:06,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2288 Valid, 6307 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 930 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-11-21 00:10:06,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40276 states. [2021-11-21 00:10:08,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40276 to 40197. [2021-11-21 00:10:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40197 states, 25131 states have (on average 1.3240619155624527) internal successors, (33275), 25550 states have internal predecessors, (33275), 12502 states have call successors, (12502), 2590 states have call predecessors, (12502), 2561 states have return successors, (13496), 12284 states have call predecessors, (13496), 12498 states have call successors, (13496) [2021-11-21 00:10:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40197 states to 40197 states and 59273 transitions. [2021-11-21 00:10:08,714 INFO L78 Accepts]: Start accepts. Automaton has 40197 states and 59273 transitions. Word has length 500 [2021-11-21 00:10:08,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:08,715 INFO L470 AbstractCegarLoop]: Abstraction has 40197 states and 59273 transitions. [2021-11-21 00:10:08,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-21 00:10:08,716 INFO L276 IsEmpty]: Start isEmpty. Operand 40197 states and 59273 transitions. [2021-11-21 00:10:08,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2021-11-21 00:10:08,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:08,729 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 11, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:08,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 00:10:08,729 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:10:08,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:08,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1645084025, now seen corresponding path program 1 times [2021-11-21 00:10:08,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:08,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685137853] [2021-11-21 00:10:08,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:08,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6479 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 6459 trivial. 0 not checked. [2021-11-21 00:10:09,092 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:09,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685137853] [2021-11-21 00:10:09,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685137853] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:09,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:09,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:10:09,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265313108] [2021-11-21 00:10:09,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:09,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:10:09,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:09,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:10:09,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:10:09,096 INFO L87 Difference]: Start difference. First operand 40197 states and 59273 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-21 00:10:11,530 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:13,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:15,125 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:20,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:20,451 INFO L93 Difference]: Finished difference Result 41498 states and 60527 transitions. [2021-11-21 00:10:20,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:10:20,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 503 [2021-11-21 00:10:20,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:20,554 INFO L225 Difference]: With dead ends: 41498 [2021-11-21 00:10:20,554 INFO L226 Difference]: Without dead ends: 41494 [2021-11-21 00:10:20,567 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 [2021-11-21 00:10:20,567 INFO L933 BasicCegarLoop]: 2218 mSDtfsCounter, 2197 mSDsluCounter, 5315 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2198 SdHoareTripleChecker+Valid, 6862 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:20,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2198 Valid, 6862 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1005 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2021-11-21 00:10:20,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41494 states. [2021-11-21 00:10:22,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41494 to 41494. [2021-11-21 00:10:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41494 states, 25838 states have (on average 1.318639213561421) internal successors, (34071), 26256 states have internal predecessors, (34071), 12729 states have call successors, (12729), 2954 states have call predecessors, (12729), 2924 states have return successors, (13723), 12511 states have call predecessors, (13723), 12725 states have call successors, (13723) [2021-11-21 00:10:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41494 states to 41494 states and 60523 transitions. [2021-11-21 00:10:22,809 INFO L78 Accepts]: Start accepts. Automaton has 41494 states and 60523 transitions. Word has length 503 [2021-11-21 00:10:22,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:22,810 INFO L470 AbstractCegarLoop]: Abstraction has 41494 states and 60523 transitions. [2021-11-21 00:10:22,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (60), 3 states have call predecessors, (60), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-21 00:10:22,810 INFO L276 IsEmpty]: Start isEmpty. Operand 41494 states and 60523 transitions. [2021-11-21 00:10:22,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2021-11-21 00:10:22,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:22,821 INFO L514 BasicCegarLoop]: trace histogram [43, 39, 39, 39, 39, 39, 39, 12, 11, 11, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:22,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 00:10:22,822 INFO L402 AbstractCegarLoop]: === Iteration 18 === 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)] === [2021-11-21 00:10:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:22,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1423452652, now seen corresponding path program 1 times [2021-11-21 00:10:22,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:22,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985246071] [2021-11-21 00:10:22,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:22,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6528 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 6506 trivial. 0 not checked. [2021-11-21 00:10:23,108 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:23,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985246071] [2021-11-21 00:10:23,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985246071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:23,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:23,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:10:23,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406359321] [2021-11-21 00:10:23,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:23,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:10:23,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:23,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:10:23,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:10:23,111 INFO L87 Difference]: Start difference. First operand 41494 states and 60523 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-21 00:10:25,696 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:26,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:28,633 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:31,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:31,989 INFO L93 Difference]: Finished difference Result 41494 states and 60523 transitions. [2021-11-21 00:10:31,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:10:31,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 511 [2021-11-21 00:10:31,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:32,101 INFO L225 Difference]: With dead ends: 41494 [2021-11-21 00:10:32,101 INFO L226 Difference]: Without dead ends: 41191 [2021-11-21 00:10:32,117 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 [2021-11-21 00:10:32,118 INFO L933 BasicCegarLoop]: 2183 mSDtfsCounter, 2375 mSDsluCounter, 4964 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:32,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2375 Valid, 6533 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-11-21 00:10:32,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41191 states. [2021-11-21 00:10:34,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41191 to 41191. [2021-11-21 00:10:34,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41191 states, 25762 states have (on average 1.315852806459126) internal successors, (33899), 26084 states have internal predecessors, (33899), 12522 states have call successors, (12522), 2909 states have call predecessors, (12522), 2905 states have return successors, (13520), 12425 states have call predecessors, (13520), 12522 states have call successors, (13520) [2021-11-21 00:10:34,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41191 states to 41191 states and 59941 transitions. [2021-11-21 00:10:34,970 INFO L78 Accepts]: Start accepts. Automaton has 41191 states and 59941 transitions. Word has length 511 [2021-11-21 00:10:34,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:34,971 INFO L470 AbstractCegarLoop]: Abstraction has 41191 states and 59941 transitions. [2021-11-21 00:10:34,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (63), 3 states have call predecessors, (63), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2021-11-21 00:10:34,971 INFO L276 IsEmpty]: Start isEmpty. Operand 41191 states and 59941 transitions. [2021-11-21 00:10:34,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2021-11-21 00:10:34,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:34,985 INFO L514 BasicCegarLoop]: trace histogram [47, 39, 39, 39, 39, 39, 39, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:34,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 00:10:34,986 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:10:34,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:34,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1325183728, now seen corresponding path program 1 times [2021-11-21 00:10:34,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:34,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891609675] [2021-11-21 00:10:34,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:34,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:35,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6706 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6706 trivial. 0 not checked. [2021-11-21 00:10:35,632 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:35,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891609675] [2021-11-21 00:10:35,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891609675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:35,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:35,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:10:35,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707332109] [2021-11-21 00:10:35,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:35,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:10:35,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:35,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:10:35,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:10:35,635 INFO L87 Difference]: Start difference. First operand 41191 states and 59941 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-21 00:10:37,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:39,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:43,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:43,927 INFO L93 Difference]: Finished difference Result 41191 states and 59941 transitions. [2021-11-21 00:10:43,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:10:43,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) Word has length 541 [2021-11-21 00:10:43,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:44,038 INFO L225 Difference]: With dead ends: 41191 [2021-11-21 00:10:44,038 INFO L226 Difference]: Without dead ends: 41189 [2021-11-21 00:10:44,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:10:44,054 INFO L933 BasicCegarLoop]: 2167 mSDtfsCounter, 2116 mSDsluCounter, 5225 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2117 SdHoareTripleChecker+Valid, 6725 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:44,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2117 Valid, 6725 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-21 00:10:44,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41189 states. [2021-11-21 00:10:46,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41189 to 41189. [2021-11-21 00:10:46,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41189 states, 25761 states have (on average 1.3142735142269322) internal successors, (33857), 26082 states have internal predecessors, (33857), 12522 states have call successors, (12522), 2909 states have call predecessors, (12522), 2905 states have return successors, (13520), 12425 states have call predecessors, (13520), 12522 states have call successors, (13520) [2021-11-21 00:10:46,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41189 states to 41189 states and 59899 transitions. [2021-11-21 00:10:46,430 INFO L78 Accepts]: Start accepts. Automaton has 41189 states and 59899 transitions. Word has length 541 [2021-11-21 00:10:46,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:46,431 INFO L470 AbstractCegarLoop]: Abstraction has 41189 states and 59899 transitions. [2021-11-21 00:10:46,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (64), 3 states have call predecessors, (64), 1 states have return successors, (58), 2 states have call predecessors, (58), 2 states have call successors, (58) [2021-11-21 00:10:46,431 INFO L276 IsEmpty]: Start isEmpty. Operand 41189 states and 59899 transitions. [2021-11-21 00:10:46,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2021-11-21 00:10:46,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:10:46,451 INFO L514 BasicCegarLoop]: trace histogram [47, 39, 39, 39, 39, 39, 39, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:10:46,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-21 00:10:46,452 INFO L402 AbstractCegarLoop]: === Iteration 20 === 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)] === [2021-11-21 00:10:46,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:10:46,452 INFO L85 PathProgramCache]: Analyzing trace with hash -369167815, now seen corresponding path program 1 times [2021-11-21 00:10:46,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:10:46,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735059102] [2021-11-21 00:10:46,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:10:46,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:10:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:10:46,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6727 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6727 trivial. 0 not checked. [2021-11-21 00:10:46,787 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:10:46,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735059102] [2021-11-21 00:10:46,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735059102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:10:46,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:10:46,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:10:46,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358738392] [2021-11-21 00:10:46,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:10:46,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:10:46,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:10:46,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:10:46,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:10:46,792 INFO L87 Difference]: Start difference. First operand 41189 states and 59899 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (70), 3 states have call predecessors, (70), 2 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-21 00:10:49,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:10:54,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:10:54,588 INFO L93 Difference]: Finished difference Result 41189 states and 59899 transitions. [2021-11-21 00:10:54,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:10:54,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (70), 3 states have call predecessors, (70), 2 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 566 [2021-11-21 00:10:54,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:10:54,592 INFO L225 Difference]: With dead ends: 41189 [2021-11-21 00:10:54,593 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 00:10:54,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:10:54,696 INFO L933 BasicCegarLoop]: 2180 mSDtfsCounter, 259 mSDsluCounter, 7254 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 8510 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:10:54,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 8510 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1251 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2021-11-21 00:10:54,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 00:10:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 00:10:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:10:54,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 00:10:54,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 566 [2021-11-21 00:10:54,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:10:54,705 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 00:10:54,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (70), 3 states have call predecessors, (70), 2 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-21 00:10:54,706 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 00:10:54,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 00:10:54,709 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-11-21 00:10:54,710 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2021-11-21 00:10:54,710 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2021-11-21 00:10:54,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-21 00:10:54,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.