./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/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_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/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_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/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 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:42:29,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:42:29,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:42:29,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:42:29,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:42:29,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:42:29,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:42:29,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:42:29,592 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:42:29,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:42:29,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:42:29,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:42:29,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:42:29,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:42:29,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:42:29,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:42:29,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:42:29,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:42:29,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:42:29,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:42:29,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:42:29,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:42:29,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:42:29,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:42:29,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:42:29,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:42:29,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:42:29,620 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:42:29,620 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:42:29,621 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:42:29,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:42:29,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:42:29,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:42:29,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:42:29,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:42:29,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:42:29,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:42:29,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:42:29,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:42:29,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:42:29,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:42:29,631 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:42:29,657 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:42:29,658 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:42:29,658 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:42:29,658 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:42:29,659 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:42:29,659 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:42:29,660 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:42:29,660 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:42:29,660 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:42:29,660 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:42:29,660 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:42:29,661 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:42:29,661 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:42:29,661 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:42:29,661 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:42:29,662 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:42:29,662 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:42:29,662 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:42:29,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:42:29,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:42:29,663 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:42:29,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:42:29,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:42:29,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:42:29,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:42:29,664 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:42:29,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:42:29,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:42:29,665 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:42:29,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:42:29,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:42:29,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:42:29,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:42:29,666 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:42:29,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:42:29,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:42:29,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:42:29,667 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:42:29,667 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_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f21538f85eb9cdaa60d9a1e57757d7a04f90c8b459e1dcc8d118be409846cb [2021-11-21 00:42:29,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:42:29,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:42:29,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:42:29,920 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:42:29,921 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:42:29,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-21 00:42:30,020 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/bin/utaipan-TEXQjIfE4P/data/5c52a350b/6d8994520e804db0b9a305c1fdd2b3fe/FLAGbe5cb5acf [2021-11-21 00:42:30,954 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:42:30,955 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-21 00:42:31,028 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/bin/utaipan-TEXQjIfE4P/data/5c52a350b/6d8994520e804db0b9a305c1fdd2b3fe/FLAGbe5cb5acf [2021-11-21 00:42:31,358 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/bin/utaipan-TEXQjIfE4P/data/5c52a350b/6d8994520e804db0b9a305c1fdd2b3fe [2021-11-21 00:42:31,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:42:31,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:42:31,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:42:31,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:42:31,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:42:31,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:42:31" (1/1) ... [2021-11-21 00:42:31,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7897d008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:42:31, skipping insertion in model container [2021-11-21 00:42:31,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:42:31" (1/1) ... [2021-11-21 00:42:31,380 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:42:31,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:42:34,396 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_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325823,325836] [2021-11-21 00:42:34,399 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_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325992,326005] [2021-11-21 00:42:34,404 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_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326159,326172] [2021-11-21 00:42:34,404 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_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326327,326340] [2021-11-21 00:42:34,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:42:34,499 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:42:34,961 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_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325823,325836] [2021-11-21 00:42:34,961 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_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[325992,326005] [2021-11-21 00:42:34,962 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_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326159,326172] [2021-11-21 00:42:34,962 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_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/sv-benchmarks/c/ldv-linux-3.14/linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i[326327,326340] [2021-11-21 00:42:34,967 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:42:35,277 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:42:35,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:42:35 WrapperNode [2021-11-21 00:42:35,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:42:35,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:42:35,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:42:35,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:42:35,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:42:35" (1/1) ... [2021-11-21 00:42:35,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:42:35" (1/1) ... [2021-11-21 00:42:35,622 INFO L137 Inliner]: procedures = 424, calls = 2565, calls flagged for inlining = 194, calls inlined = 144, statements flattened = 4931 [2021-11-21 00:42:35,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:42:35,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:42:35,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:42:35,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:42:35,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:42:35" (1/1) ... [2021-11-21 00:42:35,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:42:35" (1/1) ... [2021-11-21 00:42:35,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:42:35" (1/1) ... [2021-11-21 00:42:35,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:42:35" (1/1) ... [2021-11-21 00:42:35,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:42:35" (1/1) ... [2021-11-21 00:42:35,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:42:35" (1/1) ... [2021-11-21 00:42:35,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:42:35" (1/1) ... [2021-11-21 00:42:35,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:42:35,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:42:35,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:42:35,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:42:35,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:42:35" (1/1) ... [2021-11-21 00:42:35,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:42:36,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:42:36,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:42:36,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54e67c98-e0b1-4b5d-84a9-47198e5f8aae/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:42:36,072 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-21 00:42:36,073 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-21 00:42:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-21 00:42:36,073 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-21 00:42:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-11-21 00:42:36,073 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-11-21 00:42:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-21 00:42:36,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-21 00:42:36,073 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 00:42:36,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lock [2021-11-21 00:42:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-21 00:42:36,074 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-21 00:42:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_stereo_mono [2021-11-21 00:42:36,074 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_stereo_mono [2021-11-21 00:42:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-21 00:42:36,074 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-21 00:42:36,074 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_59 [2021-11-21 00:42:36,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_59 [2021-11-21 00:42:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_len [2021-11-21 00:42:36,075 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_len [2021-11-21 00:42:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_handler_free [2021-11-21 00:42:36,075 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_handler_free [2021-11-21 00:42:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-21 00:42:36,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_xmalloc [2021-11-21 00:42:36,075 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-11-21 00:42:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-11-21 00:42:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_irqrestore_49 [2021-11-21 00:42:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_irqrestore_49 [2021-11-21 00:42:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure v4l2_ctrl_new_std [2021-11-21 00:42:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure v4l2_ctrl_new_std [2021-11-21 00:42:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-21 00:42:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-21 00:42:36,076 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 00:42:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 00:42:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:42:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2021-11-21 00:42:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2021-11-21 00:42:36,077 INFO L130 BoogieDeclarations]: Found specification of procedure st_unregister [2021-11-21 00:42:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure st_unregister [2021-11-21 00:42:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-21 00:42:36,078 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-11-21 00:42:36,078 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-11-21 00:42:36,079 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-21 00:42:36,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-21 00:42:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-21 00:42:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume [2021-11-21 00:42:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume [2021-11-21 00:42:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:42:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_release [2021-11-21 00:42:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_release [2021-11-21 00:42:36,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-21 00:42:36,081 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-21 00:42:36,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-11-21 00:42:36,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-11-21 00:42:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_err_code [2021-11-21 00:42:36,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_err_code [2021-11-21 00:42:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_rds_mode [2021-11-21 00:42:36,082 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_rds_mode [2021-11-21 00:42:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-11-21 00:42:36,082 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-11-21 00:42:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure video_get_drvdata [2021-11-21 00:42:36,083 INFO L138 BoogieDeclarations]: Found implementation of procedure video_get_drvdata [2021-11-21 00:42:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_rds_mode [2021-11-21 00:42:36,083 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_rds_mode [2021-11-21 00:42:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 00:42:36,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exit [2021-11-21 00:42:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:42:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_1 [2021-11-21 00:42:36,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_1 [2021-11-21 00:42:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_0 [2021-11-21 00:42:36,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_0 [2021-11-21 00:42:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_switch_2 [2021-11-21 00:42:36,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_switch_2 [2021-11-21 00:42:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-21 00:42:36,085 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-21 00:42:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:42:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-21 00:42:36,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-21 00:42:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:42:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2021-11-21 00:42:36,086 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2021-11-21 00:42:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2021-11-21 00:42:36,087 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2021-11-21 00:42:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_preemph_filter [2021-11-21 00:42:36,087 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_preemph_filter [2021-11-21 00:42:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-11-21 00:42:36,088 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-11-21 00:42:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_spin_lock [2021-11-21 00:42:36,088 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_spin_lock [2021-11-21 00:42:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-21 00:42:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-21 00:42:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-21 00:42:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-21 00:42:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-21 00:42:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-21 00:42:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure fm_g_volatile_ctrl [2021-11-21 00:42:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_g_volatile_ctrl [2021-11-21 00:42:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:42:36,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:42:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-11-21 00:42:36,090 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-11-21 00:42:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-21 00:42:36,090 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-21 00:42:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure fm_config_rx_mute_reg [2021-11-21 00:42:36,091 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_config_rx_mute_reg [2021-11-21 00:42:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-11-21 00:42:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-11-21 00:42:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-21 00:42:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 00:42:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_data_mode [2021-11-21 00:42:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_data_mode [2021-11-21 00:42:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-21 00:42:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-21 00:42:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure fm_tx_set_pwr_lvl [2021-11-21 00:42:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_tx_set_pwr_lvl [2021-11-21 00:42:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 00:42:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlock [2021-11-21 00:42:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion_timeout [2021-11-21 00:42:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion_timeout [2021-11-21 00:42:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_prepare [2021-11-21 00:42:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_prepare [2021-11-21 00:42:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_send_cmd [2021-11-21 00:42:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_send_cmd [2021-11-21 00:42:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure video_device_release [2021-11-21 00:42:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure video_device_release [2021-11-21 00:42:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-11-21 00:42:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-11-21 00:42:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_resp_skb_lock_of_fmdev [2021-11-21 00:42:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_resp_skb_lock_of_fmdev [2021-11-21 00:42:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-21 00:42:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-21 00:42:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure fm_send_cmd [2021-11-21 00:42:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_send_cmd [2021-11-21 00:42:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-21 00:42:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-21 00:42:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:42:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:42:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call_stage [2021-11-21 00:42:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call_stage [2021-11-21 00:42:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2021-11-21 00:42:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2021-11-21 00:42:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure video_drvdata [2021-11-21 00:42:36,106 INFO L138 BoogieDeclarations]: Found implementation of procedure video_drvdata [2021-11-21 00:42:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:42:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2021-11-21 00:42:36,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_EMGentry_exit_fm_drv_exit_6_2 [2021-11-21 00:42:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:42:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_rds_cache [2021-11-21 00:42:36,106 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_rds_cache [2021-11-21 00:42:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_reset_station_info [2021-11-21 00:42:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_reset_station_info [2021-11-21 00:42:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_s_ctrl [2021-11-21 00:42:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_s_ctrl [2021-11-21 00:42:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:42:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_rds_buff_lock_of_fmdev [2021-11-21 00:42:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_rds_buff_lock_of_fmdev [2021-11-21 00:42:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-11-21 00:42:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-11-21 00:42:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2021-11-21 00:42:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~int_handler_prototype~0 [2021-11-21 00:42:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure enable_xmit [2021-11-21 00:42:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure enable_xmit [2021-11-21 00:42:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-11-21 00:42:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-11-21 00:42:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_volume [2021-11-21 00:42:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_volume [2021-11-21 00:42:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-21 00:42:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-21 00:42:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-11-21 00:42:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-11-21 00:42:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-21 00:42:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-21 00:42:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_filter_positive_int [2021-11-21 00:42:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_filter_positive_int [2021-11-21 00:42:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-21 00:42:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-21 00:42:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure set_rds_text [2021-11-21 00:42:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rds_text [2021-11-21 00:42:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure jiffies_to_msecs [2021-11-21 00:42:36,111 INFO L138 BoogieDeclarations]: Found implementation of procedure jiffies_to_msecs [2021-11-21 00:42:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_release [2021-11-21 00:42:36,111 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_release [2021-11-21 00:42:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-21 00:42:36,111 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-21 00:42:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-21 00:42:36,111 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-21 00:42:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2021-11-21 00:42:36,112 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2021-11-21 00:42:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:42:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-21 00:42:36,112 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-21 00:42:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-21 00:42:36,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-21 00:42:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_open [2021-11-21 00:42:36,112 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_open [2021-11-21 00:42:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-21 00:42:36,113 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-21 00:42:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure fm_rx_set_freq [2021-11-21 00:42:36,113 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_rx_set_freq [2021-11-21 00:42:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure fmc_set_mode [2021-11-21 00:42:36,113 INFO L138 BoogieDeclarations]: Found implementation of procedure fmc_set_mode [2021-11-21 00:42:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure fm_v4l2_fops_write [2021-11-21 00:42:36,113 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_v4l2_fops_write [2021-11-21 00:42:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-21 00:42:36,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-21 00:42:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure fm_irq_call [2021-11-21 00:42:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_irq_call [2021-11-21 00:42:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2021-11-21 00:42:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2021-11-21 00:42:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-21 00:42:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-21 00:42:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure fm_power_down [2021-11-21 00:42:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_power_down [2021-11-21 00:42:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure fm_download_firmware [2021-11-21 00:42:36,114 INFO L138 BoogieDeclarations]: Found implementation of procedure fm_download_firmware [2021-11-21 00:42:36,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:42:36,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2021-11-21 00:42:36,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2021-11-21 00:42:36,930 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:42:36,937 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:42:37,132 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-21 00:42:41,442 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ULTIMATE.startFINAL: assume true; [2021-11-21 00:42:41,535 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:42:42,554 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:42:42,554 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:42:42,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:42:42 BoogieIcfgContainer [2021-11-21 00:42:42,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:42:42,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:42:42,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:42:42,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:42:42,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:42:31" (1/3) ... [2021-11-21 00:42:42,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d87d740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:42:42, skipping insertion in model container [2021-11-21 00:42:42,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:42:35" (2/3) ... [2021-11-21 00:42:42,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d87d740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:42:42, skipping insertion in model container [2021-11-21 00:42:42,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:42:42" (3/3) ... [2021-11-21 00:42:42,576 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.14_complex_emg_linux-kernel-locking-spinlock_drivers-media-radio-wl128x-fm_drv.cil.i [2021-11-21 00:42:42,583 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:42:42,583 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-21 00:42:42,653 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:42:42,671 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 00:42:42,672 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-21 00:42:42,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 1364 states, 830 states have (on average 1.3457831325301204) internal successors, (1117), 846 states have internal predecessors, (1117), 431 states have call successors, (431), 101 states have call predecessors, (431), 100 states have return successors, (424), 421 states have call predecessors, (424), 424 states have call successors, (424) [2021-11-21 00:42:42,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-21 00:42:42,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:42:42,780 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:42:42,781 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:42:42,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:42:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash -459651737, now seen corresponding path program 1 times [2021-11-21 00:42:42,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:42:42,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674428151] [2021-11-21 00:42:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:42:42,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:42:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:42:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-21 00:42:43,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:42:43,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674428151] [2021-11-21 00:42:43,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674428151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:42:43,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:42:43,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:42:43,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603792000] [2021-11-21 00:42:43,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:42:43,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:42:43,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:42:43,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:42:43,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:42:43,754 INFO L87 Difference]: Start difference. First operand has 1364 states, 830 states have (on average 1.3457831325301204) internal successors, (1117), 846 states have internal predecessors, (1117), 431 states have call successors, (431), 101 states have call predecessors, (431), 100 states have return successors, (424), 421 states have call predecessors, (424), 424 states have call successors, (424) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 00:42:45,718 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:42:48,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:42:50,835 WARN L515 Checker$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 00:42:50,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:42:50,992 INFO L93 Difference]: Finished difference Result 3868 states and 5833 transitions. [2021-11-21 00:42:50,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:42:50,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 216 [2021-11-21 00:42:50,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:42:51,034 INFO L225 Difference]: With dead ends: 3868 [2021-11-21 00:42:51,034 INFO L226 Difference]: Without dead ends: 2532 [2021-11-21 00:42:51,053 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 00:42:51,056 INFO L933 BasicCegarLoop]: 2059 mSDtfsCounter, 1810 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 3654 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:42:51,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1810 Valid, 3654 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 530 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-11-21 00:42:51,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2021-11-21 00:42:51,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 2528. [2021-11-21 00:42:51,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2528 states, 1560 states have (on average 1.3429487179487178) internal successors, (2095), 1590 states have internal predecessors, (2095), 774 states have call successors, (774), 192 states have call predecessors, (774), 191 states have return successors, (770), 764 states have call predecessors, (770), 770 states have call successors, (770) [2021-11-21 00:42:51,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 3639 transitions. [2021-11-21 00:42:51,310 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 3639 transitions. Word has length 216 [2021-11-21 00:42:51,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:42:51,312 INFO L470 AbstractCegarLoop]: Abstraction has 2528 states and 3639 transitions. [2021-11-21 00:42:51,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-21 00:42:51,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 3639 transitions. [2021-11-21 00:42:51,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-21 00:42:51,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:42:51,320 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:42:51,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:42:51,321 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:42:51,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:42:51,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2069863399, now seen corresponding path program 1 times [2021-11-21 00:42:51,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:42:51,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590296372] [2021-11-21 00:42:51,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:42:51,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:42:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:42:51,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2021-11-21 00:42:51,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:42:51,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590296372] [2021-11-21 00:42:51,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590296372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:42:51,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:42:51,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:42:51,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783117304] [2021-11-21 00:42:51,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:42:51,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:42:51,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:42:51,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:42:51,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:42:51,575 INFO L87 Difference]: Start difference. First operand 2528 states and 3639 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-21 00:42:54,942 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:42:57,418 WARN L515 Checker$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 00:42:58,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:42:58,767 INFO L93 Difference]: Finished difference Result 7244 states and 10395 transitions. [2021-11-21 00:42:58,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:42:58,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 226 [2021-11-21 00:42:58,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:42:58,822 INFO L225 Difference]: With dead ends: 7244 [2021-11-21 00:42:58,822 INFO L226 Difference]: Without dead ends: 4755 [2021-11-21 00:42:58,842 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 00:42:58,843 INFO L933 BasicCegarLoop]: 2049 mSDtfsCounter, 1671 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 3735 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:42:58,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1673 Valid, 3735 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 514 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2021-11-21 00:42:58,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4755 states. [2021-11-21 00:42:59,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4755 to 4729. [2021-11-21 00:42:59,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4729 states, 2940 states have (on average 1.342517006802721) internal successors, (3947), 2984 states have internal predecessors, (3947), 1417 states have call successors, (1417), 370 states have call predecessors, (1417), 369 states have return successors, (1417), 1400 states have call predecessors, (1417), 1413 states have call successors, (1417) [2021-11-21 00:42:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4729 states to 4729 states and 6781 transitions. [2021-11-21 00:42:59,149 INFO L78 Accepts]: Start accepts. Automaton has 4729 states and 6781 transitions. Word has length 226 [2021-11-21 00:42:59,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:42:59,152 INFO L470 AbstractCegarLoop]: Abstraction has 4729 states and 6781 transitions. [2021-11-21 00:42:59,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-21 00:42:59,154 INFO L276 IsEmpty]: Start isEmpty. Operand 4729 states and 6781 transitions. [2021-11-21 00:42:59,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-21 00:42:59,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:42:59,161 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:42:59,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:42:59,162 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 00:42:59,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:42:59,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1355412949, now seen corresponding path program 1 times [2021-11-21 00:42:59,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:42:59,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133753163] [2021-11-21 00:42:59,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:42:59,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:42:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:42:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1406 trivial. 0 not checked. [2021-11-21 00:42:59,515 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:42:59,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133753163] [2021-11-21 00:42:59,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133753163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:42:59,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:42:59,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:42:59,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442976964] [2021-11-21 00:42:59,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:42:59,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:42:59,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:42:59,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:42:59,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:42:59,521 INFO L87 Difference]: Start difference. First operand 4729 states and 6781 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-21 00:43:04,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:43:04,217 INFO L93 Difference]: Finished difference Result 11806 states and 16905 transitions. [2021-11-21 00:43:04,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:43:04,218 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, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 239 [2021-11-21 00:43:04,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:43:04,277 INFO L225 Difference]: With dead ends: 11806 [2021-11-21 00:43:04,278 INFO L226 Difference]: Without dead ends: 7116 [2021-11-21 00:43:04,307 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 00:43:04,309 INFO L933 BasicCegarLoop]: 2160 mSDtfsCounter, 1845 mSDsluCounter, 1923 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 3834 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:43:04,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1845 Valid, 3834 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-21 00:43:04,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7116 states. [2021-11-21 00:43:04,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7116 to 7090. [2021-11-21 00:43:04,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7090 states, 4391 states have (on average 1.3379640173081302) internal successors, (5875), 4464 states have internal predecessors, (5875), 2127 states have call successors, (2127), 570 states have call predecessors, (2127), 569 states have return successors, (2129), 2095 states have call predecessors, (2129), 2123 states have call successors, (2129) [2021-11-21 00:43:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7090 states to 7090 states and 10131 transitions. [2021-11-21 00:43:04,718 INFO L78 Accepts]: Start accepts. Automaton has 7090 states and 10131 transitions. Word has length 239 [2021-11-21 00:43:04,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:43:04,723 INFO L470 AbstractCegarLoop]: Abstraction has 7090 states and 10131 transitions. [2021-11-21 00:43:04,724 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, (30), 2 states have call predecessors, (30), 1 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-21 00:43:04,725 INFO L276 IsEmpty]: Start isEmpty. Operand 7090 states and 10131 transitions. [2021-11-21 00:43:04,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-11-21 00:43:04,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:04,733 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:43:04,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:43:04,734 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_locked_at_exitErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:43:04,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:04,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1328768305, now seen corresponding path program 1 times [2021-11-21 00:43:04,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:04,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745586943] [2021-11-21 00:43:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:04,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1536 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1536 trivial. 0 not checked. [2021-11-21 00:43:05,191 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:05,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745586943] [2021-11-21 00:43:05,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745586943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:05,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:43:05,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:43:05,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621803633] [2021-11-21 00:43:05,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:05,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:43:05,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:05,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:43:05,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:43:05,194 INFO L87 Difference]: Start difference. First operand 7090 states and 10131 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 00:43:07,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:43:08,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:43:12,381 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:43:12,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:43:12,737 INFO L93 Difference]: Finished difference Result 7096 states and 10136 transitions. [2021-11-21 00:43:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:43:12,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 261 [2021-11-21 00:43:12,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:43:12,799 INFO L225 Difference]: With dead ends: 7096 [2021-11-21 00:43:12,799 INFO L226 Difference]: Without dead ends: 7094 [2021-11-21 00:43:12,804 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 00:43:12,809 INFO L933 BasicCegarLoop]: 1683 mSDtfsCounter, 1879 mSDsluCounter, 3870 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 5039 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:43:12,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1887 Valid, 5039 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2021-11-21 00:43:12,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7094 states. [2021-11-21 00:43:13,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7094 to 7094. [2021-11-21 00:43:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7094 states, 4394 states have (on average 1.3377332726445152) internal successors, (5878), 4467 states have internal predecessors, (5878), 2127 states have call successors, (2127), 571 states have call predecessors, (2127), 570 states have return successors, (2129), 2095 states have call predecessors, (2129), 2123 states have call successors, (2129) [2021-11-21 00:43:13,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7094 states to 7094 states and 10134 transitions. [2021-11-21 00:43:13,319 INFO L78 Accepts]: Start accepts. Automaton has 7094 states and 10134 transitions. Word has length 261 [2021-11-21 00:43:13,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:43:13,320 INFO L470 AbstractCegarLoop]: Abstraction has 7094 states and 10134 transitions. [2021-11-21 00:43:13,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 00:43:13,321 INFO L276 IsEmpty]: Start isEmpty. Operand 7094 states and 10134 transitions. [2021-11-21 00:43:13,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-11-21 00:43:13,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:13,331 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:43:13,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:43:13,332 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 00:43:13,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:13,337 INFO L85 PathProgramCache]: Analyzing trace with hash -173646796, now seen corresponding path program 1 times [2021-11-21 00:43:13,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:13,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679628602] [2021-11-21 00:43:13,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:13,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2021-11-21 00:43:13,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:13,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679628602] [2021-11-21 00:43:13,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679628602] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:13,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:43:13,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:43:13,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733502802] [2021-11-21 00:43:13,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:13,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:43:13,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:13,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:43:13,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:43:13,642 INFO L87 Difference]: Start difference. First operand 7094 states and 10134 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, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-21 00:43:20,431 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 00:43:22,508 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 00:43:22,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:43:22,667 INFO L93 Difference]: Finished difference Result 15251 states and 21503 transitions. [2021-11-21 00:43:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:43:22,668 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, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 266 [2021-11-21 00:43:22,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:43:22,739 INFO L225 Difference]: With dead ends: 15251 [2021-11-21 00:43:22,739 INFO L226 Difference]: Without dead ends: 8196 [2021-11-21 00:43:22,780 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 00:43:22,781 INFO L933 BasicCegarLoop]: 2261 mSDtfsCounter, 1186 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 3908 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:43:22,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1186 Valid, 3908 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 616 Invalid, 1 Unknown, 0 Unchecked, 8.6s Time] [2021-11-21 00:43:22,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8196 states. [2021-11-21 00:43:23,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8196 to 8162. [2021-11-21 00:43:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8162 states, 4987 states have (on average 1.3116101864848606) internal successors, (6541), 5091 states have internal predecessors, (6541), 2399 states have call successors, (2399), 774 states have call predecessors, (2399), 773 states have return successors, (2399), 2342 states have call predecessors, (2399), 2395 states have call successors, (2399) [2021-11-21 00:43:23,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8162 states to 8162 states and 11339 transitions. [2021-11-21 00:43:23,293 INFO L78 Accepts]: Start accepts. Automaton has 8162 states and 11339 transitions. Word has length 266 [2021-11-21 00:43:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:43:23,294 INFO L470 AbstractCegarLoop]: Abstraction has 8162 states and 11339 transitions. [2021-11-21 00:43:23,294 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, (31), 2 states have call predecessors, (31), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-21 00:43:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 8162 states and 11339 transitions. [2021-11-21 00:43:23,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-21 00:43:23,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:23,301 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2021-11-21 00:43:23,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:43:23,302 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 00:43:23,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:23,302 INFO L85 PathProgramCache]: Analyzing trace with hash 614643128, now seen corresponding path program 1 times [2021-11-21 00:43:23,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:23,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303209732] [2021-11-21 00:43:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:23,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:23,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1539 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1537 trivial. 0 not checked. [2021-11-21 00:43:23,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:23,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303209732] [2021-11-21 00:43:23,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303209732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:23,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:43:23,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:43:23,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055603519] [2021-11-21 00:43:23,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:23,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:43:23,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:23,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:43:23,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:43:23,646 INFO L87 Difference]: Start difference. First operand 8162 states and 11339 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 00:43:29,777 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 00:43:31,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:43:32,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:43:32,074 INFO L93 Difference]: Finished difference Result 8168 states and 11344 transitions. [2021-11-21 00:43:32,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:43:32,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 267 [2021-11-21 00:43:32,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:43:32,110 INFO L225 Difference]: With dead ends: 8168 [2021-11-21 00:43:32,111 INFO L226 Difference]: Without dead ends: 8166 [2021-11-21 00:43:32,116 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 00:43:32,117 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 1874 mSDsluCounter, 3870 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 5042 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:43:32,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1881 Valid, 5042 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 785 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2021-11-21 00:43:32,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8166 states. [2021-11-21 00:43:32,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8166 to 8166. [2021-11-21 00:43:32,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8166 states, 4990 states have (on average 1.3114228456913828) internal successors, (6544), 5094 states have internal predecessors, (6544), 2399 states have call successors, (2399), 775 states have call predecessors, (2399), 774 states have return successors, (2399), 2342 states have call predecessors, (2399), 2395 states have call successors, (2399) [2021-11-21 00:43:32,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8166 states to 8166 states and 11342 transitions. [2021-11-21 00:43:32,563 INFO L78 Accepts]: Start accepts. Automaton has 8166 states and 11342 transitions. Word has length 267 [2021-11-21 00:43:32,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:43:32,564 INFO L470 AbstractCegarLoop]: Abstraction has 8166 states and 11342 transitions. [2021-11-21 00:43:32,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (33), 3 states have call predecessors, (33), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-21 00:43:32,565 INFO L276 IsEmpty]: Start isEmpty. Operand 8166 states and 11342 transitions. [2021-11-21 00:43:32,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-11-21 00:43:32,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:32,572 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:43:32,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:43:32,573 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 00:43:32,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:32,574 INFO L85 PathProgramCache]: Analyzing trace with hash 559639053, now seen corresponding path program 1 times [2021-11-21 00:43:32,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:32,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371779440] [2021-11-21 00:43:32,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:32,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:32,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1556 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2021-11-21 00:43:32,893 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:32,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371779440] [2021-11-21 00:43:32,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371779440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:32,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:43:32,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:43:32,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824236772] [2021-11-21 00:43:32,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:32,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:43:32,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:43:32,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:43:32,895 INFO L87 Difference]: Start difference. First operand 8166 states and 11342 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 00:43:35,429 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 00:43:38,869 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 00:43:39,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:43:39,510 INFO L93 Difference]: Finished difference Result 8204 states and 11371 transitions. [2021-11-21 00:43:39,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:43:39,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 271 [2021-11-21 00:43:39,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:43:39,551 INFO L225 Difference]: With dead ends: 8204 [2021-11-21 00:43:39,552 INFO L226 Difference]: Without dead ends: 8202 [2021-11-21 00:43:39,555 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 00:43:39,556 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 1864 mSDsluCounter, 3884 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 5052 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:43:39,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1872 Valid, 5052 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 791 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-21 00:43:39,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8202 states. [2021-11-21 00:43:39,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8202 to 8198. [2021-11-21 00:43:39,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8198 states, 5007 states have (on average 1.3103654883163571) internal successors, (6561), 5113 states have internal predecessors, (6561), 2399 states have call successors, (2399), 788 states have call predecessors, (2399), 789 states have return successors, (2403), 2342 states have call predecessors, (2403), 2395 states have call successors, (2403) [2021-11-21 00:43:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8198 states to 8198 states and 11363 transitions. [2021-11-21 00:43:40,033 INFO L78 Accepts]: Start accepts. Automaton has 8198 states and 11363 transitions. Word has length 271 [2021-11-21 00:43:40,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:43:40,034 INFO L470 AbstractCegarLoop]: Abstraction has 8198 states and 11363 transitions. [2021-11-21 00:43:40,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (32), 3 states have call predecessors, (32), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 00:43:40,035 INFO L276 IsEmpty]: Start isEmpty. Operand 8198 states and 11363 transitions. [2021-11-21 00:43:40,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-21 00:43:40,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:40,044 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 4, 3, 3, 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] [2021-11-21 00:43:40,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:43:40,044 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 00:43:40,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:40,046 INFO L85 PathProgramCache]: Analyzing trace with hash 685009388, now seen corresponding path program 1 times [2021-11-21 00:43:40,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:40,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023666916] [2021-11-21 00:43:40,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:40,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1548 trivial. 0 not checked. [2021-11-21 00:43:40,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:40,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023666916] [2021-11-21 00:43:40,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023666916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:40,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:43:40,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:43:40,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744697524] [2021-11-21 00:43:40,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:40,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:43:40,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:40,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:43:40,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:43:40,435 INFO L87 Difference]: Start difference. First operand 8198 states and 11363 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 00:43:45,614 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 00:43:46,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:43:46,085 INFO L93 Difference]: Finished difference Result 8208 states and 11374 transitions. [2021-11-21 00:43:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:43:46,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 276 [2021-11-21 00:43:46,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:43:46,125 INFO L225 Difference]: With dead ends: 8208 [2021-11-21 00:43:46,125 INFO L226 Difference]: Without dead ends: 8206 [2021-11-21 00:43:46,131 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 00:43:46,131 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 1864 mSDsluCounter, 3884 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1871 SdHoareTripleChecker+Valid, 5052 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:43:46,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1871 Valid, 5052 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 791 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-11-21 00:43:46,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8206 states. [2021-11-21 00:43:46,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8206 to 8202. [2021-11-21 00:43:46,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8202 states, 5010 states have (on average 1.3101796407185629) internal successors, (6564), 5116 states have internal predecessors, (6564), 2399 states have call successors, (2399), 789 states have call predecessors, (2399), 790 states have return successors, (2403), 2342 states have call predecessors, (2403), 2395 states have call successors, (2403) [2021-11-21 00:43:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8202 states to 8202 states and 11366 transitions. [2021-11-21 00:43:46,554 INFO L78 Accepts]: Start accepts. Automaton has 8202 states and 11366 transitions. Word has length 276 [2021-11-21 00:43:46,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:43:46,555 INFO L470 AbstractCegarLoop]: Abstraction has 8202 states and 11366 transitions. [2021-11-21 00:43:46,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (35), 3 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-21 00:43:46,555 INFO L276 IsEmpty]: Start isEmpty. Operand 8202 states and 11366 transitions. [2021-11-21 00:43:46,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-21 00:43:46,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:46,564 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:43:46,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:43:46,564 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 00:43:46,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:46,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1321898353, now seen corresponding path program 1 times [2021-11-21 00:43:46,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:46,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460695808] [2021-11-21 00:43:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:46,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2021-11-21 00:43:46,848 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:46,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460695808] [2021-11-21 00:43:46,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460695808] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:46,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:43:46,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:43:46,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893931705] [2021-11-21 00:43:46,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:46,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:43:46,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:46,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:43:46,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:43:46,851 INFO L87 Difference]: Start difference. First operand 8202 states and 11366 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-21 00:43:50,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:43:53,897 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:43:55,938 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:43:57,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:43:57,456 INFO L93 Difference]: Finished difference Result 16040 states and 22250 transitions. [2021-11-21 00:43:57,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:43:57,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 281 [2021-11-21 00:43:57,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:43:57,533 INFO L225 Difference]: With dead ends: 16040 [2021-11-21 00:43:57,534 INFO L226 Difference]: Without dead ends: 16038 [2021-11-21 00:43:57,545 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 00:43:57,545 INFO L933 BasicCegarLoop]: 2087 mSDtfsCounter, 1874 mSDsluCounter, 6555 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 7875 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:43:57,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1878 Valid, 7875 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1039 Invalid, 2 Unknown, 0 Unchecked, 10.2s Time] [2021-11-21 00:43:57,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16038 states. [2021-11-21 00:43:58,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16038 to 16028. [2021-11-21 00:43:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16028 states, 9789 states have (on average 1.3128000817243846) internal successors, (12851), 10003 states have internal predecessors, (12851), 4691 states have call successors, (4691), 1543 states have call predecessors, (4691), 1545 states have return successors, (4699), 4573 states have call predecessors, (4699), 4683 states have call successors, (4699) [2021-11-21 00:43:58,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16028 states to 16028 states and 22241 transitions. [2021-11-21 00:43:58,615 INFO L78 Accepts]: Start accepts. Automaton has 16028 states and 22241 transitions. Word has length 281 [2021-11-21 00:43:58,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:43:58,616 INFO L470 AbstractCegarLoop]: Abstraction has 16028 states and 22241 transitions. [2021-11-21 00:43:58,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-21 00:43:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 16028 states and 22241 transitions. [2021-11-21 00:43:58,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-21 00:43:58,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:43:58,627 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 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] [2021-11-21 00:43:58,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:43:58,628 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 00:43:58,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:43:58,628 INFO L85 PathProgramCache]: Analyzing trace with hash 656011148, now seen corresponding path program 1 times [2021-11-21 00:43:58,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:43:58,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378114884] [2021-11-21 00:43:58,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:43:58,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:43:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:43:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1586 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1576 trivial. 0 not checked. [2021-11-21 00:43:58,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:43:58,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378114884] [2021-11-21 00:43:58,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378114884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:43:58,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:43:58,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:43:58,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624515616] [2021-11-21 00:43:58,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:43:58,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:43:58,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:43:58,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:43:58,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:43:58,967 INFO L87 Difference]: Start difference. First operand 16028 states and 22241 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-21 00:44:05,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:44:05,726 INFO L93 Difference]: Finished difference Result 16038 states and 22250 transitions. [2021-11-21 00:44:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:44:05,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 286 [2021-11-21 00:44:05,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:44:05,789 INFO L225 Difference]: With dead ends: 16038 [2021-11-21 00:44:05,789 INFO L226 Difference]: Without dead ends: 16036 [2021-11-21 00:44:05,797 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 00:44:05,798 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 1874 mSDsluCounter, 3870 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1877 SdHoareTripleChecker+Valid, 5042 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:44:05,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1877 Valid, 5042 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2021-11-21 00:44:05,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16036 states. [2021-11-21 00:44:06,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16036 to 16036. [2021-11-21 00:44:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16036 states, 9795 states have (on average 1.312608473711077) internal successors, (12857), 10009 states have internal predecessors, (12857), 4691 states have call successors, (4691), 1545 states have call predecessors, (4691), 1547 states have return successors, (4699), 4573 states have call predecessors, (4699), 4683 states have call successors, (4699) [2021-11-21 00:44:06,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16036 states to 16036 states and 22247 transitions. [2021-11-21 00:44:06,750 INFO L78 Accepts]: Start accepts. Automaton has 16036 states and 22247 transitions. Word has length 286 [2021-11-21 00:44:06,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:44:06,751 INFO L470 AbstractCegarLoop]: Abstraction has 16036 states and 22247 transitions. [2021-11-21 00:44:06,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (37), 3 states have call predecessors, (37), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-21 00:44:06,751 INFO L276 IsEmpty]: Start isEmpty. Operand 16036 states and 22247 transitions. [2021-11-21 00:44:06,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-21 00:44:06,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:44:06,759 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:44:06,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:44:06,759 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 00:44:06,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:44:06,760 INFO L85 PathProgramCache]: Analyzing trace with hash -254176563, now seen corresponding path program 1 times [2021-11-21 00:44:06,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:44:06,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907101324] [2021-11-21 00:44:06,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:44:06,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:44:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:44:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1620 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1608 trivial. 0 not checked. [2021-11-21 00:44:07,023 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:44:07,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907101324] [2021-11-21 00:44:07,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907101324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:44:07,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:44:07,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:44:07,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989214530] [2021-11-21 00:44:07,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:44:07,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:44:07,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:44:07,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:44:07,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:44:07,026 INFO L87 Difference]: Start difference. First operand 16036 states and 22247 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-21 00:44:12,241 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:44:14,326 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:44:17,236 WARN L515 Checker$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 00:44:18,362 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:44:18,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:44:18,751 INFO L93 Difference]: Finished difference Result 16152 states and 22353 transitions. [2021-11-21 00:44:18,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:44:18,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 291 [2021-11-21 00:44:18,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:44:18,828 INFO L225 Difference]: With dead ends: 16152 [2021-11-21 00:44:18,828 INFO L226 Difference]: Without dead ends: 16150 [2021-11-21 00:44:18,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:44:18,839 INFO L933 BasicCegarLoop]: 1686 mSDtfsCounter, 1856 mSDsluCounter, 3899 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 5067 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:44:18,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1858 Valid, 5067 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 789 Invalid, 3 Unknown, 0 Unchecked, 11.2s Time] [2021-11-21 00:44:18,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16150 states. [2021-11-21 00:44:19,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16150 to 16148. [2021-11-21 00:44:19,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16148 states, 9873 states have (on average 1.3125696343563253) internal successors, (12959), 10087 states have internal predecessors, (12959), 4691 states have call successors, (4691), 1579 states have call predecessors, (4691), 1581 states have return successors, (4699), 4573 states have call predecessors, (4699), 4683 states have call successors, (4699) [2021-11-21 00:44:20,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16148 states to 16148 states and 22349 transitions. [2021-11-21 00:44:20,084 INFO L78 Accepts]: Start accepts. Automaton has 16148 states and 22349 transitions. Word has length 291 [2021-11-21 00:44:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:44:20,085 INFO L470 AbstractCegarLoop]: Abstraction has 16148 states and 22349 transitions. [2021-11-21 00:44:20,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (36), 3 states have call predecessors, (36), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-21 00:44:20,086 INFO L276 IsEmpty]: Start isEmpty. Operand 16148 states and 22349 transitions. [2021-11-21 00:44:20,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-21 00:44:20,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:44:20,096 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 8, 7, 7, 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] [2021-11-21 00:44:20,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-21 00:44:20,097 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 00:44:20,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:44:20,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1762132376, now seen corresponding path program 1 times [2021-11-21 00:44:20,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:44:20,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906511738] [2021-11-21 00:44:20,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:44:20,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:44:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:44:20,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1635 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1621 trivial. 0 not checked. [2021-11-21 00:44:20,428 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:44:20,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906511738] [2021-11-21 00:44:20,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906511738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:44:20,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:44:20,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:44:20,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448292939] [2021-11-21 00:44:20,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:44:20,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:44:20,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:44:20,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:44:20,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:44:20,431 INFO L87 Difference]: Start difference. First operand 16148 states and 22349 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-21 00:44:26,621 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 00:44:27,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:44:27,174 INFO L93 Difference]: Finished difference Result 16219 states and 22405 transitions. [2021-11-21 00:44:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:44:27,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 297 [2021-11-21 00:44:27,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:44:27,240 INFO L225 Difference]: With dead ends: 16219 [2021-11-21 00:44:27,240 INFO L226 Difference]: Without dead ends: 16215 [2021-11-21 00:44:27,249 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 00:44:27,250 INFO L933 BasicCegarLoop]: 1691 mSDtfsCounter, 1842 mSDsluCounter, 3924 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 5093 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:44:27,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1845 Valid, 5093 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 797 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2021-11-21 00:44:27,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16215 states. [2021-11-21 00:44:28,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16215 to 16205. [2021-11-21 00:44:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16205 states, 9912 states have (on average 1.3112389023405973) internal successors, (12997), 10125 states have internal predecessors, (12997), 4691 states have call successors, (4691), 1598 states have call predecessors, (4691), 1599 states have return successors, (4699), 4573 states have call predecessors, (4699), 4683 states have call successors, (4699) [2021-11-21 00:44:28,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16205 states to 16205 states and 22387 transitions. [2021-11-21 00:44:28,284 INFO L78 Accepts]: Start accepts. Automaton has 16205 states and 22387 transitions. Word has length 297 [2021-11-21 00:44:28,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:44:28,284 INFO L470 AbstractCegarLoop]: Abstraction has 16205 states and 22387 transitions. [2021-11-21 00:44:28,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2021-11-21 00:44:28,285 INFO L276 IsEmpty]: Start isEmpty. Operand 16205 states and 22387 transitions. [2021-11-21 00:44:28,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-11-21 00:44:28,293 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:44:28,294 INFO L514 BasicCegarLoop]: trace histogram [24, 19, 19, 19, 19, 19, 19, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:44:28,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-21 00:44:28,294 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:44:28,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:44:28,295 INFO L85 PathProgramCache]: Analyzing trace with hash 166131058, now seen corresponding path program 1 times [2021-11-21 00:44:28,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:44:28,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426479268] [2021-11-21 00:44:28,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:44:28,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:44:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:44:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1597 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1590 trivial. 0 not checked. [2021-11-21 00:44:28,514 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:44:28,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426479268] [2021-11-21 00:44:28,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426479268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:44:28,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:44:28,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:44:28,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201833403] [2021-11-21 00:44:28,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:44:28,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:44:28,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:44:28,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:44:28,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:44:28,516 INFO L87 Difference]: Start difference. First operand 16205 states and 22387 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-21 00:44:30,687 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:44:32,728 WARN L515 Checker$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 00:44:36,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:44:37,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:44:37,204 INFO L93 Difference]: Finished difference Result 39893 states and 55137 transitions. [2021-11-21 00:44:37,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:44:37,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 301 [2021-11-21 00:44:37,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:44:37,461 INFO L225 Difference]: With dead ends: 39893 [2021-11-21 00:44:37,461 INFO L226 Difference]: Without dead ends: 24061 [2021-11-21 00:44:37,532 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 00:44:37,533 INFO L933 BasicCegarLoop]: 3262 mSDtfsCounter, 1854 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 4934 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:44:37,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1854 Valid, 4934 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 768 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-11-21 00:44:37,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24061 states. [2021-11-21 00:44:38,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24061 to 23947. [2021-11-21 00:44:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23947 states, 14638 states have (on average 1.3117229129662522) internal successors, (19201), 14967 states have internal predecessors, (19201), 6939 states have call successors, (6939), 2364 states have call predecessors, (6939), 2367 states have return successors, (6955), 6753 states have call predecessors, (6955), 6931 states have call successors, (6955) [2021-11-21 00:44:38,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23947 states to 23947 states and 33095 transitions. [2021-11-21 00:44:38,954 INFO L78 Accepts]: Start accepts. Automaton has 23947 states and 33095 transitions. Word has length 301 [2021-11-21 00:44:38,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:44:38,959 INFO L470 AbstractCegarLoop]: Abstraction has 23947 states and 33095 transitions. [2021-11-21 00:44:38,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (38), 2 states have call predecessors, (38), 1 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-21 00:44:38,959 INFO L276 IsEmpty]: Start isEmpty. Operand 23947 states and 33095 transitions. [2021-11-21 00:44:38,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-21 00:44:38,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:44:38,969 INFO L514 BasicCegarLoop]: trace histogram [23, 19, 19, 19, 19, 19, 19, 9, 8, 8, 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] [2021-11-21 00:44:38,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-21 00:44:38,970 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 00:44:38,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:44:38,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1788748131, now seen corresponding path program 1 times [2021-11-21 00:44:38,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:44:38,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311993665] [2021-11-21 00:44:38,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:44:38,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:44:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:44:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1665 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1649 trivial. 0 not checked. [2021-11-21 00:44:39,264 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:44:39,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311993665] [2021-11-21 00:44:39,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311993665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:44:39,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:44:39,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:44:39,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877171116] [2021-11-21 00:44:39,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:44:39,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:44:39,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:44:39,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:44:39,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:44:39,266 INFO L87 Difference]: Start difference. First operand 23947 states and 33095 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-21 00:44:42,997 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 00:44:45,992 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:44:48,017 WARN L515 Checker$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 00:44:50,342 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:44:52,378 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:44:52,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:44:52,951 INFO L93 Difference]: Finished difference Result 23957 states and 33102 transitions. [2021-11-21 00:44:52,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:44:52,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 302 [2021-11-21 00:44:52,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:44:53,024 INFO L225 Difference]: With dead ends: 23957 [2021-11-21 00:44:53,024 INFO L226 Difference]: Without dead ends: 23693 [2021-11-21 00:44:53,031 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 00:44:53,031 INFO L933 BasicCegarLoop]: 2087 mSDtfsCounter, 1870 mSDsluCounter, 6557 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 7877 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:44:53,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1870 Valid, 7877 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1033 Invalid, 4 Unknown, 0 Unchecked, 12.6s Time] [2021-11-21 00:44:53,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23693 states. [2021-11-21 00:44:54,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23693 to 23685. [2021-11-21 00:44:54,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23685 states, 14516 states have (on average 1.3110360980986497) internal successors, (19031), 14798 states have internal predecessors, (19031), 6843 states have call successors, (6843), 2318 states have call predecessors, (6843), 2323 states have return successors, (6863), 6694 states have call predecessors, (6863), 6839 states have call successors, (6863) [2021-11-21 00:44:54,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23685 states to 23685 states and 32737 transitions. [2021-11-21 00:44:54,434 INFO L78 Accepts]: Start accepts. Automaton has 23685 states and 32737 transitions. Word has length 302 [2021-11-21 00:44:54,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:44:54,435 INFO L470 AbstractCegarLoop]: Abstraction has 23685 states and 32737 transitions. [2021-11-21 00:44:54,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (40), 3 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-11-21 00:44:54,435 INFO L276 IsEmpty]: Start isEmpty. Operand 23685 states and 32737 transitions. [2021-11-21 00:44:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-21 00:44:54,444 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:44:54,445 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:44:54,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-21 00:44:54,445 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:44:54,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:44:54,446 INFO L85 PathProgramCache]: Analyzing trace with hash -908986305, now seen corresponding path program 1 times [2021-11-21 00:44:54,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:44:54,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605789749] [2021-11-21 00:44:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:44:54,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:44:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:44:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1599 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1599 trivial. 0 not checked. [2021-11-21 00:44:54,651 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:44:54,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605789749] [2021-11-21 00:44:54,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605789749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:44:54,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:44:54,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:44:54,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698517802] [2021-11-21 00:44:54,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:44:54,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:44:54,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:44:54,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:44:54,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:44:54,653 INFO L87 Difference]: Start difference. First operand 23685 states and 32737 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-21 00:44:58,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:45:00,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:45:02,657 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 00:45:03,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:03,444 INFO L93 Difference]: Finished difference Result 67175 states and 92939 transitions. [2021-11-21 00:45:03,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:45:03,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 318 [2021-11-21 00:45:03,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:03,580 INFO L225 Difference]: With dead ends: 67175 [2021-11-21 00:45:03,581 INFO L226 Difference]: Without dead ends: 43529 [2021-11-21 00:45:03,640 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 00:45:03,641 INFO L933 BasicCegarLoop]: 2075 mSDtfsCounter, 1774 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1774 SdHoareTripleChecker+Valid, 3738 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:03,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1774 Valid, 3738 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 551 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-11-21 00:45:03,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43529 states. [2021-11-21 00:45:05,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43529 to 43393. [2021-11-21 00:45:05,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43393 states, 26763 states have (on average 1.3120352725778126) internal successors, (35114), 27367 states have internal predecessors, (35114), 12356 states have call successors, (12356), 4260 states have call predecessors, (12356), 4271 states have return successors, (12400), 12015 states have call predecessors, (12400), 12352 states have call successors, (12400) [2021-11-21 00:45:05,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43393 states to 43393 states and 59870 transitions. [2021-11-21 00:45:05,992 INFO L78 Accepts]: Start accepts. Automaton has 43393 states and 59870 transitions. Word has length 318 [2021-11-21 00:45:05,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:05,993 INFO L470 AbstractCegarLoop]: Abstraction has 43393 states and 59870 transitions. [2021-11-21 00:45:05,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-21 00:45:05,993 INFO L276 IsEmpty]: Start isEmpty. Operand 43393 states and 59870 transitions. [2021-11-21 00:45:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-21 00:45:06,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:06,006 INFO L514 BasicCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-21 00:45:06,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-21 00:45:06,007 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 00:45:06,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:06,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1084195615, now seen corresponding path program 1 times [2021-11-21 00:45:06,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:06,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874859364] [2021-11-21 00:45:06,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:06,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:06,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1710 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1695 trivial. 0 not checked. [2021-11-21 00:45:06,222 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:06,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874859364] [2021-11-21 00:45:06,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874859364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:06,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:45:06,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:45:06,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923738535] [2021-11-21 00:45:06,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:06,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:45:06,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:06,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:45:06,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:45:06,225 INFO L87 Difference]: Start difference. First operand 43393 states and 59870 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 00:45:17,175 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:45:19,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:45:23,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:45:27,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:27,950 INFO L93 Difference]: Finished difference Result 100877 states and 139166 transitions. [2021-11-21 00:45:27,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:45:27,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) Word has length 322 [2021-11-21 00:45:27,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:28,223 INFO L225 Difference]: With dead ends: 100877 [2021-11-21 00:45:28,224 INFO L226 Difference]: Without dead ends: 57571 [2021-11-21 00:45:28,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:45:28,349 INFO L933 BasicCegarLoop]: 3287 mSDtfsCounter, 1844 mSDsluCounter, 9502 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1844 SdHoareTripleChecker+Valid, 11535 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:28,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1844 Valid, 11535 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1788 Invalid, 2 Unknown, 0 Unchecked, 18.9s Time] [2021-11-21 00:45:28,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57571 states. [2021-11-21 00:45:30,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57571 to 57438. [2021-11-21 00:45:30,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57438 states, 35387 states have (on average 1.3118094215389833) internal successors, (46421), 36200 states have internal predecessors, (46421), 16380 states have call successors, (16380), 5637 states have call predecessors, (16380), 5668 states have return successors, (16456), 15933 states have call predecessors, (16456), 16376 states have call successors, (16456) [2021-11-21 00:45:31,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57438 states to 57438 states and 79257 transitions. [2021-11-21 00:45:31,398 INFO L78 Accepts]: Start accepts. Automaton has 57438 states and 79257 transitions. Word has length 322 [2021-11-21 00:45:31,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:31,399 INFO L470 AbstractCegarLoop]: Abstraction has 57438 states and 79257 transitions. [2021-11-21 00:45:31,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 3 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 00:45:31,399 INFO L276 IsEmpty]: Start isEmpty. Operand 57438 states and 79257 transitions. [2021-11-21 00:45:31,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-11-21 00:45:31,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:31,416 INFO L514 BasicCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-21 00:45:31,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-21 00:45:31,416 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:45:31,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:31,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1153925158, now seen corresponding path program 1 times [2021-11-21 00:45:31,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:31,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699083619] [2021-11-21 00:45:31,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:31,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1710 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1695 trivial. 0 not checked. [2021-11-21 00:45:31,656 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:31,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699083619] [2021-11-21 00:45:31,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699083619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:31,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:45:31,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:45:31,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617414805] [2021-11-21 00:45:31,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:31,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:45:31,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:31,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:45:31,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:45:31,659 INFO L87 Difference]: Start difference. First operand 57438 states and 79257 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 00:45:35,740 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:45:38,036 WARN L515 Checker$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 00:45:41,354 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:45:43,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:45:46,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:45:50,838 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:45:54,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:45:56,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:46:00,652 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 00:46:02,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:46:02,176 INFO L93 Difference]: Finished difference Result 129133 states and 178104 transitions. [2021-11-21 00:46:02,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:46:02,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) Word has length 323 [2021-11-21 00:46:02,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:46:02,627 INFO L225 Difference]: With dead ends: 129133 [2021-11-21 00:46:02,628 INFO L226 Difference]: Without dead ends: 71782 [2021-11-21 00:46:02,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:46:02,766 INFO L933 BasicCegarLoop]: 3189 mSDtfsCounter, 1787 mSDsluCounter, 9278 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 11239 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:46:02,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1787 Valid, 11239 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1752 Invalid, 7 Unknown, 0 Unchecked, 27.3s Time] [2021-11-21 00:46:02,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71782 states. [2021-11-21 00:46:05,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71782 to 71645. [2021-11-21 00:46:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71645 states, 44107 states have (on average 1.3109030312648786) internal successors, (57820), 45133 states have internal predecessors, (57820), 20422 states have call successors, (20422), 7062 states have call predecessors, (20422), 7113 states have return successors, (20530), 19865 states have call predecessors, (20530), 20418 states have call successors, (20530) [2021-11-21 00:46:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71645 states to 71645 states and 98772 transitions. [2021-11-21 00:46:06,337 INFO L78 Accepts]: Start accepts. Automaton has 71645 states and 98772 transitions. Word has length 323 [2021-11-21 00:46:06,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:46:06,338 INFO L470 AbstractCegarLoop]: Abstraction has 71645 states and 98772 transitions. [2021-11-21 00:46:06,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 3 states have call successors, (39), 2 states have call predecessors, (39), 2 states have return successors, (35), 4 states have call predecessors, (35), 3 states have call successors, (35) [2021-11-21 00:46:06,338 INFO L276 IsEmpty]: Start isEmpty. Operand 71645 states and 98772 transitions. [2021-11-21 00:46:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-21 00:46:06,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:46:06,361 INFO L514 BasicCegarLoop]: trace histogram [26, 19, 19, 19, 19, 19, 19, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:46:06,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 00:46:06,362 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_assert_linux_kernel_locking_spinlock__one_thread_double_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_assert_linux_kernel_locking_spinlock__one_thread_double_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-21 00:46:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:46:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash 288077422, now seen corresponding path program 1 times [2021-11-21 00:46:06,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:46:06,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596468645] [2021-11-21 00:46:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:46:06,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:46:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:46:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1709 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1709 trivial. 0 not checked. [2021-11-21 00:46:07,165 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:46:07,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596468645] [2021-11-21 00:46:07,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596468645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:46:07,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:46:07,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:46:07,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164752074] [2021-11-21 00:46:07,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:46:07,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:46:07,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:46:07,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:46:07,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:46:07,168 INFO L87 Difference]: Start difference. First operand 71645 states and 98772 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-21 00:46:12,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:46:15,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:46:17,841 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:46:19,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:46:19,292 INFO L93 Difference]: Finished difference Result 71809 states and 98934 transitions. [2021-11-21 00:46:19,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:46:19,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 318 [2021-11-21 00:46:19,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:46:19,792 INFO L225 Difference]: With dead ends: 71809 [2021-11-21 00:46:19,792 INFO L226 Difference]: Without dead ends: 71807 [2021-11-21 00:46:19,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:46:19,818 INFO L933 BasicCegarLoop]: 1688 mSDtfsCounter, 1837 mSDsluCounter, 3917 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 5087 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:46:19,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1839 Valid, 5087 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2021-11-21 00:46:19,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71807 states. [2021-11-21 00:46:23,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71807 to 71805. [2021-11-21 00:46:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71805 states, 44227 states have (on average 1.3092907047731024) internal successors, (57906), 45253 states have internal predecessors, (57906), 20422 states have call successors, (20422), 7102 states have call predecessors, (20422), 7153 states have return successors, (20530), 19865 states have call predecessors, (20530), 20418 states have call successors, (20530) [2021-11-21 00:46:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71805 states to 71805 states and 98858 transitions. [2021-11-21 00:46:23,829 INFO L78 Accepts]: Start accepts. Automaton has 71805 states and 98858 transitions. Word has length 318 [2021-11-21 00:46:23,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:46:23,830 INFO L470 AbstractCegarLoop]: Abstraction has 71805 states and 98858 transitions. [2021-11-21 00:46:23,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (38), 3 states have call predecessors, (38), 1 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-21 00:46:23,831 INFO L276 IsEmpty]: Start isEmpty. Operand 71805 states and 98858 transitions. [2021-11-21 00:46:23,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-11-21 00:46:23,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:46:23,853 INFO L514 BasicCegarLoop]: trace histogram [25, 20, 20, 20, 20, 20, 20, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:46:23,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-21 00:46:23,853 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 00:46:23,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:46:23,854 INFO L85 PathProgramCache]: Analyzing trace with hash 346457418, now seen corresponding path program 1 times [2021-11-21 00:46:23,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:46:23,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331967156] [2021-11-21 00:46:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:46:23,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:46:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:46:24,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1812 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1805 trivial. 0 not checked. [2021-11-21 00:46:24,093 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:46:24,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331967156] [2021-11-21 00:46:24,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331967156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:46:24,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:46:24,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:46:24,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117808167] [2021-11-21 00:46:24,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:46:24,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:46:24,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:46:24,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:46:24,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:46:24,098 INFO L87 Difference]: Start difference. First operand 71805 states and 98858 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (40), 2 states have call predecessors, (40), 1 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-21 00:46:28,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 00:46:32,367 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []